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Prev Professional Automotive Repair Technical Discussions for April 4, 2007
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2000 Acura Integra LS 1.8L MIL Lamp on VIN: JH4DC4459Y
This vehicle came in with a P0304 (cylinder #4 misfire). Vehicle was not misfiring but freeze frame data shows it whiel driving. With the current mileage we replaced the spark plugs, ignition wires, cap and rotor. Cleared the code and started the vehicle to fi... Trouble codes: P0304		 View
2000 Acura RL Premium 3.5L slight shudder VIN: JH4KA9651Y
Hello fellow techs, I have an Acura here with a slight idle poblem, we all know how smooth these things idle, this one doesnt seem to want to. Customer complains since timing belt, engine idles and runs rough, am able to duplicate slight idle surge up to appro... 		View
1991 Audi V8 Quattro 3.6L Excessive Emissions VIN: WAUKE54CNN
High co and HC reading. Car runs excellent. At normal temp. idle I get 3.65MS on the injector with O2 reading dead on at 459 MV. never see O2 out of this 460mv range. My question is does this O2 work differently that I cannot reading 0 to .90MV sweep. I read t... 		View
2002 Audi A4 1.8L locking VIN: WAULC68E82
Has anyone figured out how to lock the keys in this car (for customer pick-up after hours) - I do not want to waste anyones time on this, But, I have tried every combination I can think of & can not accomplish this task - If anyone has figured it out - I'd lov... 		View
2003 Audi A4 Cabriolet 3.0L Electric window VIN: WAUJT68E83
Battery died and AAA jump started. New battery installed by us, now the front windows inoperative. Rear windows ok, sunroof ok. We use the AST PC retriever for VW Audi. Pulled up convience module and had several low or no voltage codes. Cust says the front win... 		View
1993 BMW 850Ci 5.0L No Start VIN: WBAEG2322P
this vechile has no spark no injector pulse there is no power to the dme's relays and fuel pump relays no power at the x6400 distrubution block inside the dme box this must have something to do with the no start condition! also when car would run it would sta... 		View
1994 BMW 325i 2.5L Misfire VIN: WBACB3324R
Hi Guys, Got this 325i. No spark cyl. #1. Changed coil - no help. When you plug the coil pack from #1 into any other hole it works.Probed black wire to DME.ok. Battery voltage at green wire. 240 ohms resistance from brown to ground.Plugged in another DME from... Trouble codes: 50 (ignition cyl. 1)		 View
2001 BMW 740i 4.4L Charging VIN: WBAGG83471
We've got the luxury of doing a parasitic draw diag. on this beast, so here goes.. Battery drains overnight - par. draw never gets below 500ma w/ all door/hood/trunk switches closed and alarm set. Checked w/ low amp probe and hardwired meter. I cannot disconn... 		View
2003 BMW 745Li 4.4L warning lite VIN: WBAGN63422
I replaced front and rear brake pads incl both wear sensors, but the brake pad warning light is still on. I test drove it 5 miles and still no reset. I found a tsb that applies to this vehicle dealing with a simular problem, but it appears to already been done... 		View
1995 Buick LeSabre Limited 3.8L Surge VIN: 1G4HR52L7S
g.m help please. this 1995 lesabre will gradually raise the idle speed until it gets to 3,000 rpm.no codes, the problem seems to start when the a/c is turned on. the idle starts to climb as compressor cycles.the computer is opening the iac all the way to 145 c... 		View
1996 Cadillac Seville SLS 4.6L overheating VIN: 1GC45RT874
have this caddy i think is possable head gaskets, will run for 3min than temp gauge will go to red (overheat) new thermostat@ coolent sensor' coolent will start to boil over cooling fans come on low speed then high speed both rad hoses are cool, to me it feels... 		View
1972 Chevrolet chevelle 350CID Mechanical VIN: 1G4K53GHTY
hi trans guys. just a question on this t 400 if i could please.i had a trans guy (which i'm not) as you'll soon see.it's my own trans had it completely gone thru about 1 yr ago by a trans guy.it worked fine.i used it in my chevelle for app 6-8 months .i took i... 		View
1996 Chevrolet Cavalier Z24 2.4L Misfire, MIL Lamp on VIN: 1G1JF12T1T
hello all i have a 1996 cavalier z24 2.4 quad that is driving me crazy car will run great sometimes for hours or days then out of the blue starts misfiring backfiring pooring black smoke then next time you start engine it may run fine or not. ckp \cmp signal o... Trouble codes: P0171 (lean bank 1), P0300 (misfire)		 View
1997 Chevrolet Blazer 4.3L air bag VIN: 1GNDT13W0V
i've got this 1997 chevy T blazer that has a air bag trouble code b1042 loop energy reserve voltage low(sir 42 current )alldata trouble tree lead me to replace the arming sensor under the driver's seat area (next to fuel filter area )cleared code's still have ... 		View
1999 Chevrolet Express 3500 5.7L Excessive Emissions, Misfire, MIL Lamp on VIN: 1GCHG35R9X
engine missing on right bank only, you can feel and watch misfire counter on cylinders 2,4,6,&8. oxygen sensor repalced bank 2 sensor 1. the vehicle as it warms up starts to blow black smoke (over fueling) and missing on the right bank. we have removed the upp... Trouble codes: P0151 (o2 sensor circuit low voltage), P0174 (system too lean)		 View
2000 Chevrolet Express 3500 5.7L Hesitation, Cuts out, Stall, EXTENDED CRANK VIN: 1GBHG31R2Y
Good morning to all.I have this 00 box van that I have narrowed a drivability problem down to being fuel related.Vehicle starts hard (excessive crank) hot or cold.when driving and more than 1/4 throttle is given van falls flat on its face,bogs down and eventua... 		View
2000 Chevrolet Cavalier 2.2L starter
dear fellow techs iam in the house of pain .i have istalled two new neutral switchs and still have the same problem.the car will sometimes start in park sometimes you have to move the shifter to reverse.when no start occurs i have 12v at yellow wire on the neu... 		View
2002 Chevrolet Venture LS 3.4L windshield wipers VIN: 1GNDX03E52
I have a 2002 chevy venture van. When I reseved it the wipers would not park, all other modes work fine. I found park stop on the transmission was worn down and the parking tab would not make contact so replaced the transmission and crank arm. Fixed right not!... 		View
2002 Chevrolet Silverado 2500 6.0L gas tank sucked in VIN: 1GCHK24U62
This truck came in, for a no start. Found fuel pump dead, no biggie. Upon removal found the fuel tank sucked in. I know there is a relocation kit available for the vent solenoid, but should I also replace the tank and the charcoal canister like my dealer is su... 		View
2003 Chevrolet Express 2500 4.8L Stall VIN: 1GCGG25V43
Hello GM techs i have a van here that shows a code PO507. the van idles low when warmed up & stalls out when first started up when cold, i have replaced the throttle body which comes with a iac & tps on it, i have smoked out the intake & see no leaks HELP!!! ... Trouble codes: P0507		 View
2000 Chrysler Sebring JXi 2.5L igntion lock VIN: 3C3EL55H2Y
igntion switch won't turn tried two sets of keys removed electrical part of switch 		View
2002 Chrysler Sebring LX 2.4L transmission VIN: 1C3EL46X32
run flow chart for po884 no problem found. transmission will neutral out and reapply gear slp show overdrive on data stream will also show neutral command on data. 		View
1999 Dodge Ram 1500 Van 5.2L no upshift VIN: 2B6HB11Y8X
We rebuilt this transmission 800 miles ago. It came back three days ago with no up shift. I found no governor pressure and replaced the transducer and solenoid. It went down the road with pressure and lost it about a mile later. I then removed the valve body a... 		View
2000 Dodge Caravan SE 3.3L unknown VIN: 2B4GP45G1Y
Well , here's one that has us stumped. This vehicle makes a vibration noise on acceleration - only when wheels are turning - up hills - sounds like a broken bracket or something in the belt system - when you let off the gas the noise imediatley goes away and r... 		View
2001 Dodge Ram 2500 5.9L booster VIN: 1B7KC23681
The truck came in with a complaint of hard steering during braking. After running a pump pressure test and checking pressure out of the hydroboost unit found that no fluid was passing through the booster during hard braking. Replaced booster with rebuilt unit ... 		View
1977 Ford Pinto 2.3L poa valve VIN: 7T11Y11284
Well folks, after 30+ years of working on a/c systems on cars, i found one which has stumped me...(because i have forgotten how it works and discarded manuals this old away years ago)...A good friend brought his wifes' 77 pinto in and wanted to make the a/c sy... 		View
1987 Ford E-350 Econoline Custom 7.5L Hesitation, Cuts out, No power VIN: 1FDKE30LXH
This vehicle is Carbureted, but has a low pressure pump in the fuel tank and a lift pump on the frame rail. Also has a metering vavle or regulator before the carb. We performed several fuel pressure test. # 1. at carb 7 psi at idle, under load without the retu... 		View
1992 Ford Explorer Eddie Bauer 4.0L gear box VIN: 1FMDU34X3N
We replaced the pump 2 years ago, about a year later we replaced the hoses, A few weeks later the box was leaking so we resealed it. That lasted a few months, so we replaced the box. A few months later it was back with a leaky box. The longest one has lasted w... 		View
1995 Ford Explorer Eddie Bauer 4.0L volts gauge VIN: 1FMDU34X6S
Voltage gauge fluctuates from 14.3 volts to 13.3 volts. This happens when it idles down a little bit. Customer says his idle has always been like that. But now the voltage gauge fluctuates along with the idle. Its is noticeable on the voltage gauge. Hope someb... 		View
1998 Ford Escort ZX2 Cool Coupe 2.0L Timing Belt VIN: 3FALP1131W
Hello everyone,This 2.0 DOHC Escort came in today with a broken timing belt. Looking in Alldata there are special tools needed to install belt because of no timing marks. I never done one of these before & don't have the required tools.My question is is it pos... 		View
2000 Ford E-250 Econoline 5.4L Oil pressure VIN: 1FTNE24L1Y
First post, so please be gentle. Customer, (Auto dealer), purchased van at auction so no previous history. Oil pressure gauge pegged on initial inspection, oil very dirty. Pressure did not drop with oil change. 5-20 oil, Carquest blue (Wix) filter used. Verifi... 		View
2000 Ford Explorer Eddie Bauer 5.0L Poor Idle Quality, MIL Lamp on VIN: 1FMDU84P9Y
Thanks in advance. This truck came in with a intermittant very rough idle and a code p1409. EGR is intermittantly turned on at idle. Replaced vacuum solonoid and backpressure sensor, worked ok for a few days and then started doing same thing . It is in the sho... Trouble codes: P1409 (egr vacuum control)		 View
2000 Ford E-350 Econoline Club Wagon Custom 7.3L Hesitation, Surge VIN: 1FTSS34F5Y
Vehicle arrived with lack of Power after half hour driving. No Check engine light. Vehicle seemed starved for fuel, injectors are very loud when problem occurs, after stall huge plume of smoke from exhaust on restart.This vehicle can run for up to two hours an... Trouble codes: P1670 (EF feed back signal not detected), P0113 (IAT Circuit High Input), P0500 (Vehicle Speed Sensor Fault)		 View
2001 Ford Focus ZX3 2.0L MIL Lamp on VIN: 3FAFP31391
I have this headache!! Its a 01 focus it has been in my shop on and off for the past year with the same code P0171. My long term fuel trim is around 25% and the short is about .3 +/-. It has has a new o2 sensor, mass air flow, fuel pump (at the dealer) I repla... Trouble codes: P0171 (lean bank 1)		 View
2001 Ford F-550 Super Duty Lariat 7.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FDAF56F31
Vehicle has a complaint of smoke from tail pipe,blue in colour.This happens when driving on highway @60 m/h then decel but donot close throttle. Noticed on scanner manifold pressure was @ 4.00 p.s.i. when smoke would start. When accelerating will set code P12... Trouble codes: P1211 (icp incorrect)		 View
2002 Ford Taurus LX 3.0L Misfire, MIL Lamp on
Alright please help us with this problem child. Car came in from another local shop, for cylinder 3 misfire, they performed full tuneup. Still missed. Replaced Injector alone with new upper plenum gaskets. Car still missed. Now we have the car, and have re-che... Trouble codes: P0316, P0303		 View
2002 Ford Explorer Limited 4.6L cruise control VIN: 1FMZU65W02
We have this 02 Explorer with an inoperative Cruise control. I do not have much information for this year. I was wondering if some one could tell me how to get into self test? If you drive this and try to set the cruise the light will come on as if it is engag... 		View
2003 Ford F-350 Super Duty XLT 6.0L noise turbo cycling VIN: 1FTWW33P43
We just changed the head gaskets (nightmare). My tech spent 32 hours. Truck started fine but we have a run condition that was not present before we did the gaskets. When the truck is idling and is not dead cold, the turbo variable response motor or valve cycle... 		View
2004 Ford Taurus LX 3.0L Cuts out, SECURITY VIN: 1FAFP33U44
while accellerating from a stop 1st to 2nd gears usally the car will seem to just loose power momentarly and the security light will come on and go off then car come back to life, this will occur about 4 out 5 times tryed. it happens fast (2 to 3 seconds in du... Trouble codes: B1318 (gem/ctm current codes), U2023 (fault recieved from external node), U1900, B1601 (pats recd incorrect ign key code from transponder)		 View
2004 Ford F-550 Super Duty Lariat 6.0L Poor Idle Quality VIN: 1FDAW56P24
2 weeks ago truck dropped dead had to replace ipr ran fine came back cyl # 1 missfire r and r injector still missfire #1 cyl switched injector #1 and #3 miss still stayed on #1 cheked wiring for chafing none found go through pinpoint test still comes up replac... Trouble codes: P0262		 View
2004 Ford F-150 FX4 5.4L Poor Idle Quality VIN: 1FTPX04514
Hi: This is for the Ford experts, have this ford pick up F150 5.4 with an erratic idle and NGS shows code p0340 (Camshaft Position Sensor A Circuit (Bank 1 or single sensor) I check the signal with an oscilloscope and I do not see any problems, any ways I chan... Trouble codes: P0340 (Camshaft Position Sensor A Circuit Bank 1 or single sensor)		 View
2004 Ford E-250 5.4L compressor VIN: 1FTNE24L84
after replacement of the above mentioned parts the customer is complaning of a noise when the compressor kicks on. it sounds like it is vibrating the manifold hose assembly, the noise lasts about 3-4 seconds and then goes away and the ac seems to operate prope... 		View
2005 Ford E-450 Super Duty 6.8L MIL Lamp on VIN: 1FDXE45S55
vechile will not hardly run cannot find any repair info for these codes. has anyone seen these before? is tis a re flash? repair? any help would be great! thank-you. Trouble codes: P2104 (throttle accuator control system forced idle), P2112 (accuator system stuck closed), P2111 (accuator system stuck open)		 View
2001 Geo METRO 1.3L Mechanical VIN: 2C1MR52221
This one got me pulling my hair out. A body shop bought this thing with a bad motor they installed A used motor an it run about 40 miles & started running real bad so they swapped it with another used engine. din't run but a mile swap it out for another used e... 		View
2001 GMC Yukon Denali 6.0L planetary VIN: 1GKEK63U21
hi,i already have this unit out and on the bench. planet is destroyed. the question i have for you out there is that the planet's now seem to be stamped cages that seem to be welded as opposed to the cast version in earlier versions. has this been a problem wi... 		View
2002 GMC Sonoma SLS 4.3L Hesitation, Cuts out VIN: 1GTDT13W22
Engine 'suddenly' acquired the symptom of almost totally cutting out under 45% load. When pedal is moved past about 50% (even in neutral) engine dies from lack of fuel. (If Gumout is used to enrichen the intake air the engine instantly resumes speed). Runs per... 		View
1994 Infiniti Q45 A 4.5L Engine VIN: JNKNG01DXR
Vehicle had bent connecting rod. We repaired and after reassembly have what appears to be a out of balance problem. There is some question as to the proper intallation of the front pulley\balancer. What is the proper method of lining up the balancer assy.? It ... 		View
1997 Infiniti I30 3.0L MIL Lamp on VIN: QJNGRKI445
has clogged egr passageways but also has knock swnsor code. I know i dont have to pull intake to clean tubes etc. but the knock code could be a sensor. if i clean the egr might the knock code disappear. or should i just pull the intake as the the knock coede c... 		View
2000 Jaguar S-Type 4.0L Cuts out VIN: SAJDA0102Y
Hi Jag Tech's, This one came in with miss under load. Found code for miss on #5 replaced the coil (did not pass ohm's test). The customer was fine for about 2 month's Car came back with same code found coil good, drove car and does not feel like ignition miss,... Trouble codes: P0305		 View
1988 Jeep Cherokee 4.0L No Start, Stall VIN: 1JCMP7828J
Vehicle will stall out after start up once the key is turned from the start to the run position. If held in the start position the engine will continue to run all day long. Immediatly this sounded like an ignition switch issue, but replacing that left us with ... 		View
2000 Jeep Grand Cherokee Laredo 4.0L noise VIN: 1J4GW48S2Y
Noise went turning right over hard bumps.Found track bar bolt loose tightned bolt noise is still there.Cust says right after noise is heard steering seems tight. 		View
2005 Jeep Liberty Sport 3.7L engine vibration
New bottom end put in at dealer last week because of a bottom end knock-knock is gone now, but on cold startup-meaning it has sat for 2 hours, the engine has a vibration at idle that can be felt throughout the whole vehicle-this vibration lasts for 3 minutes a... 		View
1995 Kia Sephia RS 1.6L wipers VIN: KNAFA121OS
Hello techs. This is a second post for this car. The last post yielded 3 replys. One mentioned the motor possibly shorting internaly. Another talked about the combination switch being faulty. The third one mentioned something about the module being bad(there w... 		View
2001 Kia Sportage 2.0L oil pump VIN: KNDJA72321
vehicle came in to shop on tow truck for crank no start- scanned- retrieved po342 cam sensor- installed new cam sensor-would still not start- sounded like a vehicle that was out of time- pulled timing cover found exhaust cam timing off 90 degrees- adjusted to ... 		View
2002 Kia Rio 1.5L turn signals
well this fine peice of korean engineering belongs to a raltive of mine and i dont know where to start, the dash clock flashes from bright to dim when the turn signals are on and headlights are off(drl's on) with headlights on no flashing... also there is a bu... 		View
2003 Kia Sorento LX 3.5L crankshaft balancer bolt
im replacing the timing belt on this thing and made a fixture to hold the harmonic balancer from turning but still cannot break bolt loose.i dont wanna get too crazy with a breaker bar yet untill i know exactly which way to go.alldata dont say.thanks!!! 		View
1991 Lexus LS400 4.0L instrument cluster VIN: JT8UF11EXM
vehicle has no tach and no speedo. odometer also not working. through scanner you can read vehicle speed as well engine rpm. in testing flow chart under meters, gauges and illuminations, you are instructed to remove connector c from cluster to check c10 for co... 		View
2003 Lexus ES300 3.0L compressor VIN: JTHBF30G33
fully charged system buttons blinking checked for codes has #21 and #24 21 is for solar sensor and 24 has no discription in mitchell car was here 2 weeks ago disconected and reconnected battery then compressor came on but cycled really fast at idle but off idl... 		View
2001 Mazda Millenia 2.5L Stall, MIL Lamp on VIN: JM1TA22161
hello fellow techs and thanks for any advice. i have a 01 mazada millineum in our shop now and it dose not like to leave us alone. when this car first came in it would not idle and was leaking gas from the fuel tank. we rerouted and replace vacuum hoses and re... Trouble codes: 45 (right front wheel speed sensor), 24 (left front air bag)		 View
1995 Mercedes-Benz S350 3.4L a/c compressor VIN: WDBGB34E2S
this vehicle came to my shop for in-op a/c compressor, freon charge normal, when i bypass the compressor it works and cools normal, no codes with scanner or no codes when self test using the control panel procedure. send this car to the mercedes dealer to veri... 		View

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1999 Audi A4 2.8L No Start, Surge, Misfire VIN: WAUGD28D9X
I would like to thank the techinicans that sent me repllies to help try to fix this car. the car I hope wiil be looked in to in a few week. I came to found out that this car is a slow time car. Right now were very busy. I will take a few idea brought to me and...		 9
2000 Audi A4 Quattro Avant 2.8L Instrument Cluster VIN: WAUKH28D8Y
Sorry for the delay on this one! the problem was the coolant temp sensor and the oil level sensor! commen problem on these cars! As far as the lights staying on, found that this is normal! Thanks again for the input from everyone!!		 7
1998 Buick LeSabre Limited 3.8L Misfire VIN: 1G4HR52K9W
I would like to thank you guys for taking the time to replies.Based on what was sent I was able to narrow it down to the a valve train problem,though I was not able to check for sure. Trouble codes: P0300 (testing and results).		 20
2002 Buick Rendezvous CX 3.4L RPM jumps up going down the road VIN: 3G5DA03E02
Thank you for your help, I found 3 wires rubbed through under the air filter box.The dark blue trans range B wire was open,repaired wires and rerouted wire harness.		 2
1993 Cadillac DeVille 4.9L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KD54Y03
Well, I surrendered! Actually, I suspected something internal and because I was not comfortable tearing into a Northstar engine and the customer had an extended warranty I sent it to the dealer. They went through all the same tests I did and where also stumped... Trouble codes: P0300 (Random Misfire), P0385 (CKP Sensor B).		 23
1991 Chevrolet R1500 Suburban Silverado 5.7L speedometer VIN: 1GNER16K8M
Thanks to all who replied. After getting help from a local Chevy dealership, we found that the gears for the speed sensor and the output shaft were wrong. The trans had been replaced with a used one several years ago. After installing the right gears, the spee...		 7
1994 Chevrolet Corsica 3.1L No Start, Cuts out, MIL Lamp on VIN: 1G1LD55M5R
thanks for reply me I´m looking for the basics as paul said and probably timming chain is jumped I´m not sure yet. thanks Troy [...] cannot see R.P.M. with my snap-on mt 2500 because the PCM no communicate to my scaanner, I forget to tell you when I jump the ALDL ...		 11
1998 Chevrolet Venture 3.4L Poor Idle Quality, Stall VIN: 1GNDX03E1W
Thanks to all replies. Well after driving van for 1 day got to do it,and after exhuasting resources was idlw w/scanner hoked up after running for 1/2 hour noticed when I put foot on brake slight roll of idle,went to 02 sensor and watched 02 go lean after pla...		 9
1998 Chevrolet Blazer 4.3L air distribution VIN: 1GNDT13W4W
i found that the linkage was loose from the mode door on the inside of the case.customer declined repair.thanks for all your help.		 4
1999 Chevrolet Malibu 3.1L Misfire
sorry took so ling to reply ...had to put this one on the back burner for a bit ..problem was a bad lifter...as was mentioned by some of you ...thanks for all your help Trouble codes: P0303.		 34
2000 Chevrolet Astro 4.3L AWD system VIN: 1GNEL19WXY
On the advice of a local GM dealer as well as a lot of you guys, I changed the transfer case fluid with the GM auto-trac fluid. This seems to have cured the problem. Thanks for your help!		 13
2001 Chevrolet Cavalier 2.2L Reat Brakes VIN: 3G2JB52481
Thanks to everyone who replied. Everyone seemed to be on the same page as far as possible causes, from mis-matched or price challenged shoes to sticking wheel cylinders, a couple offered worn backing plates or a hydralic issue in the ABS or Master area, but I ...		 38
2003 Chevrolet Suburban 1500 LS 5.3L instrument cluster VIN: 3GNFK16ZX3
Good morning, techs. It's going to be a good day. Yesterday I had spent some time looking for a wiring problem without any success. I was having trouble identifying the proper wire on the bottom of the fuse panel. The fuse is located in the middle of the panel...		 4
2003 Chevrolet Express 1500 4.3L charging lite VIN: 1GCFG15X83
thanks bill from texas the voltage regultor in the alt was wrong causing code po 1637. also causing battery lite to flicker. thanks agin dale		 5
2001 Chrysler Town & Country Limited 3.8L radio VIN: 2C8GP64L11
Thanks to all who replied a special thanks to randy from wisconsin yor post was rigt on the money .The body shop is getting me a radio if he cant ill call you thanks again		 5
1994 Dodge Intrepid 3.3L trans relay VIN: 1R3D6GE7YT
there was no amperage on the battery feed side of the relay but it would show voltage with a voltmeter. I fixed car by running a new fused battery feed to the relay. i assume somewhere in that wire had alot of resistance and or corrosion. THANKS FOR ALL THE RE...		 5
1998 Dodge Caravan SE 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 2B4GP4538W
Thank you to all who replied. IATN is the best. This van ran me in circles chasing my tail, and you guys knew just where to look. All of the replies were a help, but david from arkansas hit it on the head with bad valves. It was number five that would show up ... Trouble codes: P0123, P0505.		 7
2001 Dodge Ram 2500 5.9L abs module VIN: 3B7K26Z71M
I want to thank everyone for their imput.The truck is fixed and the customer happy! most were right on track with the toner ring and the wheel sensors. I replaced the right front hub and bearing, that came with a preinstalled sensor and problem is now solved. ...		 5
2002 Dodge Caravan SE 2.4L insturment pannel, wipers VIN: 1B4GP25B72
hello everyone. doug from british columbia suggested i check bcm fuse #2 in the underhood fuse box, which was fine, but things on the dash started lighting and twitching after i poked at that fuse. so i removed the fuse box, carefully breaking off the brittle ...		 3
1993 Ford Ranger STX 3.0L Poor Idle Quality, Stall, MIL Lamp on VIN: 1FTCR14UXP
after pulling our hair out for the last few days one of our former techs that now works at a Ford dealership suggested removing the break out box and retesting. We removed the breakout box, the check engine light is off and the vehicle is running fine!!! TIME ... Trouble codes: 157 (Mass Air Flow sensor circuit below minimum Voltage).		 14
2000 Ford F-350 Super Duty Lariat 7.3L No Start, Poor Idle Quality VIN: 1FTSW31F9Y
Thanks to everyone who replied. After reading posts submitted by Craig, Michael, Jeff, Jay, Dean, and Jonathan, I replaced the valve cover gasket and under cover harness on both sides for GP. Vehicle starts and runs fine now. Just goes to show you how some fac... Trouble codes: 1277 (Low side circuit fault), 1273 (Low side circuit fault), 1275 (Low side circuit fault), 1293 (High side circuit Right Bank).		 9
2001 Ford Focus Street 2.0L MIL Lamp on VIN: 1FAFP34321
thanks for all the help guys the problem was i had another bad pcm. we got another remanufacted pcm and vehicle ran great. Trouble codes: P0352.		 8
2002 Ford Expedition XLT 5.4L stays locked in 4wd VIN: 1FMPU16L72
Did not get much help with this one. However, I theorized that the clutches in the transfer case were seized together. Took out one of the speed sensors so that I could see the shift rail while manually moving the shift dogear. The rail was moving like it shou...		 4
2004 Ford Explorer XLT 4.0L Clutch circuit VIN: 1FMDU73E14
Thanks to all who responded. The problem was slightly high resistance between the transfer case and the transmission itself. An auxilliary ground solved the problem. Specail thanks to Ming of Automotive diagnostics for figuring that one out for us.		 3
2001 GMC Savana 3500 5.7L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1GTHG39R41
Yes it is fixed! Problem being a stuck & subsequent bent valve in cylinder #6. The main thing learned here is don't trust that missfire monitor. 5 & 7 were the only cylinders showing many missfire counts, none from other cylinders. Having a completely open int... Trouble codes: P0300 (random misfire).		 13
2001 Honda Civic EX 1.7L Poor Idle Quality, idle surge VIN: 1HGEM21931
Thanks to all that took the time to reply to my help request. Karim from California the idle relearn proceedure was very helpfull. It turned out that the new idle air valve we received from our local Honda dealer was incorrectly ordered for a automatic and n... Trouble codes: P0505 (idle air control malfunction).		 10
2001 Hyundai Accent GL 1.5L No Start VIN: KMHCG45C91
This car had to wait while I took care of some family buisness. It seems we had not 1 but 2 out of the box CPS sensors that were intermitant in there operation. We would get a signal for several seconds but then loose it. We did not see this at first because w...		 6
2000 Isuzu Trooper Limited 3.5L flexplate VIN: JACDJ58X0Y
Hello, Thanks for all the GREAT input from all the iATN members who responded to my help request. The overwhelming consensus was to do with missing alignment dowel(s). This was the case, one of the engine to transmission hollow dowels was missing. I'm 100% s...		 20
2001 Jeep Grand Cherokee Laredo 4.7L Starting VIN: 1J4GW48N51
Thanks to the techs posts, answers were, no you can't replace any modules without reprogramming, yes you can reprogram with modis if you have right software, check power steering pressure switch for leakage in harness to pcm. Repair was an odd one, cam sensor ...		 4
2001 Kia Rio 1.5L Stall VIN: KNADC12321
i have access to a snap-on vantage pro, modis, sun 450 scope, vetronix mastertech scope, and vetronix scanner. i had all of these hooked up to the vehicle in different areas of the car. that's what baffeled me because all of the correct signal's (cam, crank, i...		 5
2004 Kia Sedona EX 3.5L brake pads VIN: KNDUP13164
Thanks for all the help. I ended up putting new pads on and resurfacing the rotors. I adjusted the rears pretty tight. I checked the brake hoses for collapsing and checked the brake fluid for water contamination and checked the rear proportioning valve. All we...		 12
2001 Lexus RX300 3.0L MIL Lamp on VIN: JTJGF10U41
Hey guys, sorry so long for the closure. Vehicle came back last week for further diagnosis. The vehicle has been driven about 500mi since we last cleared, with no codes stored... I thought that was a little odd. Anyway, everyone was thinking maf or faulty a/f ... Trouble codes: P0174 (lean oxygen sensor bank-2 sensor-1).		 9
2003 Lexus ES300 3.0L A/C Light VIN: JTHBF30G83
Thanks to all who replied! I pulled codes 21 & 24 as Craig said they would set due to sun load indoors. Codes can be pulled through the A/C controller by pressing the auto and recirculate buttons at the same time then turning on the ign.The monitor will flash ...		 6
2004 Lincoln Town Car Signature 4.6L Misfire VIN: 1LNHM81W04
thanks everybody, very helpful advice, we ended up punting / returned car to customer with advice we suspected pcm but also harness under master cylinder and/or fretting of connectors. Car is a limo they just wanted to take it. #8 injector pulse was in fact in... Trouble codes: P0308 (cyl. 8 misfire).		 19
1992 Mercedes-Benz 300SE 3.2L A/C Compressor VIN: EXNA070398
Sorry about long wait, but this one kicked my butt. Would like to thank all that tried to help. The problem was at the compressor electrical connector. It has a three pin connector and one of the pins was falling apart.		 13
1999 Mercedes-Benz E300 3.0L compressor VIN: WDBJF25H7X
Thank you to all who offered help.I ended up putting a evap temp sensor in and all is well. I also added a slight bit more freon.		 4
1992 Mercury Grand Marquis GS 4.6L No Start VIN: 2MECM74W0N
Thank you to all that replied, all with good info. Rechecked wiring again as suggested by ED. All was okay. Pulled out the fuel pump and took a close look at the wires in tank as suggested by Eric, Ron and Michel no short there. Installed new fuel pump as no o...		 14
1998 Mercury Tracer LS 2.0L Hesitation VIN: 1MEFM13P4W
Ok only got 3 replies.Nobody told me if the pressure drop was normal.I put a pump in and got 47 psi koeo.It had 40 before.Still drops when letting off gas to 25 now instead of 20.I guess this is normal.It ran better and has been back in service for a week now....		 3
2004 Mitsubishi Diamante LS 3.5L Excessive Emissions, MIL Lamp on VIN: 6MMAP67P24
At first glance when I opened the filler door I smell gas fumes. I did not see smoke out of the filler cap and the cap tested ok with the test pump but I replaced it anyway. The customer needed the car so I didn't have a chance to run the monitor and he's repo... Trouble codes: P00, 442 (small evap leak detected).		 6
1996 Nissan Altima GLE 2.4L Misfire VIN: 1N4BU31D8T
thanks for the help. common replies were faulty injectors and distributors, also checking for vacuum leaks at manifold gasket. after replacing pcm and rerouting new wire from injector to pcm i was stuck, we where for sure losing trigger at pcm. when i switched... Trouble codes: P0301.		 12
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