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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for July 3, 2009
International Automotive Technicians' Network (iATN) - Members Only
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1996 Buick Century Custom 3.1L 1/2 shift VIN: 1G4AG55M4T
Vehicle has a hard shift after 1/2 shift. TCC applies early in second gear. I have tested for the codes, has P0742, P1812 and P1870(Transmission over temp condition and Transmission component slipping).** The transmission was replaced back in February of this ...
1993 Cadillac Eldorado Touring 4.6L Poor Idle Quality, MIL Lamp on VIN: 1G6EL1299P
Hey guys, Customer came in with a high idle problem all the time. Scanned for codes. DTC P030 - Idle speed control RPM out of range. Engine idles at approx. 1,500RPM all the time. Checked for binding cables, throttle etc, and found plunger on ISC motor fully e... Trouble codes: P0030
1995 Cadillac Eldorado 4.6L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G6EL12Y5S
Here is one I already wish I'd never seen...pre-OBDII Caddy with drive problems...yuck! According to the customer, the car sat for sometime, in a garage, until the current owner inherited it. No knowledge of why it was parked. Since the current owner got it, i... Trouble codes: 56 (transaxle input speed sensor), 52 (pcm historical), 109 (pcm historical)
1997 Cadillac Seville SLS 4.6L compressor VIN: 1G6KS52YXU
Covered all basics for caddys. made repairs to bad componets above.disconnected battery. If you ground pin 27 on ecm(green w/white to relay)compressor comes on. pressures are good,no acm codes,no body codes.pin 27 is relay ground.Thought ecm was problem,but sa...
1998 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNCS13W2W
replaced leaking fuel pressure regulator for hard to start problem and fixed that . next day set system too lean codes . cleared pcm of codes and unhooked battery for 5 min. to see if computor just need to adapt to repair. no help. tried mass air flow no help.... Trouble codes: P0171, P0174
1999 Chevrolet K1500 Suburban 5.7L Poor Idle Quality, Misfire VIN: 1GNEK13R13
have a problem mil p0300.i checked misfire data ,cyl#4 a lot of multiple misfires.have a misfire on cyl#4 and runs rough at idle,above 1,500 rpm runs smooth and no cyl#4 misfire detected on scan tool.i had replaced the intake gasket,injector#4,cap,rotor,wires,... Trouble codes: P0300
2005 Chevrolet Tahoe LS 5.3L No Start VIN: 1GNEC13T55
Have this 05 tahoe from body shop. will not start cranks over fine. They drove it into bays then did body work now will not run. truck hit left frt corner. I have a U1000 code always current in IPC, BCM, SIR, ABS, ONstar, ACM. All other modules no codes. I rep... Trouble codes: U1000
2007 Chevrolet Equinox LT 3.4L tpms VIN: 2CNDL63F67
Hello GM techs. We put new tires on this vehicle. Being careful not hit the sensors. Even took tires off 1 at a time. Now tire pressure light is on. Display shows R.F. 1 lb., L.R. 2 lbs, & R.R. 19 lbs. We performed relearn with key fob & pressure drop procedur...
1993 Chrysler New Yorker Fifth Avenue 3.3L engine VIN: 1C3XV66R6P
Car runs good for 15 minutes, engine starts acting up like it is getting ready to stall out then check gauge light comes on car stalls out. basically I am stumped need some assistance.
2004 Chrysler Pacifica 3.5L ac VIN: 2C8GF68474
Vehicle came in with a complaint of no ac system had been over charged at another shop evacuated and recharged with the proper amount. ac still inopertive jumped relay and all was well clutch kicked in cooling fans came on took a charge no problem unplugged ju...
1994 Dodge Grand Caravan ES 3.8L No Start VIN: 1B4GH54LXR
I have this 1994 Dodge Grand Caravan with 3.8L engine, wont' start.We checked fuel pressure,it's 50 psi, i have spark on one coil pack wire, the other 2 wires get primary signal then they cut off, i checked injector pulse & it has a pulse then it shuts off.We ...
1999 Dodge Durango SLT 5.2L Poor Idle Quality, Cuts out, Stall VIN: 1B4HS28YXX
vehicle dies after warmed up when driving under load like hard acceleration or up hills, if let idle in shop will die but starts right up , when dies while driving looses spark fuel pressure stays constant, wait 5 minutes and restarts every time . have tried n...
2000 Dodge Grand Caravan 3.0L Lacks Power VIN: 2B4GP2432Y
The vehicle has no power on acceleration and pops through the throttle body on heavy accel. The engine light is off, we checked for dtc's and found none in all systems. We checked for factory tsb's and found none related to are condition. At idle the engine r...
2000 Dodge Dakota SLT 5.9L No Start VIN: 1B7HG2AZ2Y
vehicle came in on a hook. he was just going down road and it sputtered a couple times & died. I have spark, injector signal, & fuel pressure but it will not start. scanned or codes and none found. data stream showed nothing funny. any ideas on where to look n...
2003 Dodge Grand Caravan Sport 3.3L mini trip computer VIN: 2D4GP44323
customer complains of "distance to empty" miles on overhead console[mini-trip computer]fluctuates to much.verified problem.take vehicle on 5-6 mile trip,distance to empty will change 30-40 miles.bring the vehicle back in shop and let set a few minutes and dist...
2003 Dodge Ram 1500 Van 3.9L popping VIN: 2D6WB11X63
Thank to all in advance. This is a pain. The van came in with an intermittent pop threw intake and loss of power from a stop then it would go away. We looked at this problem 4 months ago, i found to bad injector pigtails and replaced them. Now it is back for t...
2003 Dodge Ram 2500 5.9L Cuts out VIN: 3D3KU286X3
I just bought this truck as it was a repo when i started it the check engine light was on. Checked for codes then looked around what I found was the previous owner had cut the engine harness what is missing is the connector for the map sensor and fuel pressure...
2004 Dodge Neon SXT 2.0L readiness codes will VIN: 1B3ES56C94
Car will not pass state emission inspection.Readiness codes will not set.Sometimes it will have only 2 codes not ready,then next time we scan it it will have 4 that are not set.The codes that will not set are o2 sensor heater,evap system moniter,catylist effic...
1991 Ford F-150 Custom 5.8L Starting
hi i have hard time to replace actuator hooked to ignition key lock with rod search all data did not help much .after removed steering wheel,turning switch,3bolts hold back plate i unable to pull out broken actuator.thank you for your reply.
1994 Ford Explorer Eddie Bauer 4.0L torque convertor VIN: 1FMDU34X9R
this vechile drove fine then all of sudden vechile started to run rough slowing down for an intersection the driver managed to keep it running turned into their driveway then the vechile dies. put into park car starts runs great put into gear it stalls no code...
1999 Ford F-250 Super Duty XL 7.3L Misfire VIN: 1FTNW21F3X
Need help please. Got a real winner here. Been working on this one a week. Customer had blown high pressure oil hose off of passenger side head, kept trying to run truck to get it off the road. Ford didn't have a hose in stock so he had a shop make a hydraulic...
2001 Ford F-150 King Ranch 4.6L Master Cyl, VIN: 1FTRW07W11
Stumped here. Pedal bleeds off under light preasure. This truck was diagnosed by another shop as needing a Master Cyl due to a low pedal issue. I recomended we diag ourselves but customer insisted on replacement. After replacement had same problem. Bled five b...
2002 Ford Taurus LX 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, MIL Lamp on, Limp Mode VIN: 1FAFP55217
Strange one. Brought to me for AC work. Barely made it here. Owner said been looked at several times. Car had a hard fault 1633 KAM code. Fuse taken out for AC compressor as this car AC has been byspassed. Replace fuse and KAM code gone. Drove good than on way... Trouble codes: 135 (02 Heater B1S1), 412 (Secondary AIS), 743 (TCC Electrical), 750/7, 1451 (evap)
2004 Ford E-350 Super Duty 5.4L Hesitation, Misfire VIN: 1FDWE35L54
This vehicle came in with a complaint of wont go over 40 km/h. Road tested vehicle and found it was missing, pinging, and had a lack of power. Retrieved codes, p0305, p0306, p0307, p0308, and a p0191 (fuel rail pressure sensor circuit open/short)and a p0174 (b... Trouble codes: P0305 (p0306-), P0306 (p0307-), P0307 (p0308-), P0308 (p0174-), P0174 (p0316-), P0316
2006 Ford Fusion S 2.3L pcm clutch engagement and control VIN: 3FAFP06Z06
Ford Techs, HELP! Our Fusion A/C system is not cooling. Customer noticed he could move wires and remove install relay for clutch and it would operate some times. When we began testing checking for bad connections and everything appears acceptable to operate. W...
2006 Ford F-350 Super Duty XLT 6.0L No Start VIN: 1FTWW31P36
Good afternoon,I have a 2006 f-350 with a no start problem.Fuel pressure looks good,fuel quality looks good/oil quality and correct visc good.Fuel filters have been both changed and air filter is clear.The truck came in on a hook with customer complaint of a l... Trouble codes: 2290 (low icp pressure voltage), 2291 (low icp pressure during cranking)
2002 GMC Sierra 2500 HD SL 6.6L Poor Idle Quality, MIL Lamp on, lack of power climb VIN: 1GTHK23182
The customer's complaint on this truck is a rough, rolling idle and black smoke along with a lack of power when climbing a grade and of course the MIL is on. I checked the actual versus desired FRP regulator and they mirror each other for the most part. The fr... Trouble codes: P0089 (Fuel pressure regulator performance), P0101 (MAF sensor performance), P0404 (EGR open position performance), P0540 (Intake air heater feedback circuit), P1093 (Fuel rail pressure low during power enrichment)
1991 Honda Prelude SE 2.0L MIL Lamp on VIN: JHMBA4279M
Codes ten seconds after startup, warm or cold, verified MAP voltages at MAP and ECU using both pins as well as a known ground. Reference voltage steady at 4.98V at all times. Substituted MAP and ECU with known good units, no change. Compression is 160 across ... Trouble codes: 5 (MAP sensor)
1997 Honda Accord EX 2.7L Surge, VIN: 1HGCE6675V
Customer dropped off vehicle with complaint of tach intermittently not working or wavering erraticly. when tach screws up engine will buck/ping and or "feel like bad gas". Fuel pressure and fuel sample test OK.No check engine light on or codes stored in comput...
1995 Jeep Cherokee Sport 4.0L body seams VIN: 1J4FJ6759S
Hi, This jeep has a water leak coming in on the passenger side floor board area where the the floor, side panel and firewall meet. The leak is coming from up high in the passenger side cowl/firewall area. I have removed the cowl/ wiper cover to access the uppe...
2003 Kia Spectra 1.8L No Start, Misfire, MIL Lamp on VIN: KNAFB12113
Working at home trying to help my neighbor whose Kia timing belt broke and bent all the valves. I installed used engine and does not want to start, I can get it it start by unplugging #1 and #3 injectors installed new plugs swapped coils and injectors from use... Trouble codes: P0300, P0301 (misfire1 cly), P0303 (misfire3 cyl)
1998 Lexus GS300 3.0L Steering VIN: JT8BD68S0W
hi fellow tech.i am working on 1998 lexus gs300.very bad steering shimmy at 60mph,only when stepping on brakes.actually the first time when i apply the brakes the car runs with no shimmy,only after the second time i apply the brakes .steering shimmy a lot .it ...
2001 Nissan Pathfinder LE 3.5L Lighting VIN: JN8DR09YX1
This pathfinder has a bad smart entrance module. door locks, interior lights,and rear defrost problems. i have installed a used module , everything works ok except the remotes for the locks.i have tried the reset procedure(key in 7 times , push button on contr...
1999 Oldsmobile Alero GL 2.4L Hesitation, Stall VIN: 1G3NL52TXX
Please help. This car stalls intermittently when coming to a stop. I looked at it last week, could not duplicate problem. There ate no codes, datastream looks OK. Air filter OK. Alt charges fine. A/C cond fan operation OK.I cleaned the throttle bore and IAC. T...
2000 Pontiac Bonneville SSEi 3.8L 3-4 shift VIN: 1G2HZ5410Y
tranny techs please help,this veh is my personal.my buddy owns a trans shop and assisted/told me what to do on the rebuild. 4t65e replaced clutches,torque converter,valvebody with rebuilt one and 4th gear cookie cutter.problem is we have no 4th gear.the comput...
2002 Saturn Vue 3.0L MIL Lamp on VIN: 5GZCZ63B02
Hi all and Happy 4th July. Have this Saturn Vue, with check engine light on and also reduced power light on. Clear all codes and within seconds P0638 resets. Short drive and P0700 nd P2119 and P02101 appear. As long as reduce power light stay off, this car is ... Trouble codes: P0638 (tac command performance), P2119 (throttle closed position performance), P0700 (transmissioncontrlo system fault), P2101 (tac error)
2001 Subaru Outback 2.5L Head gasket VIN: 4S3BH6753Y
Hey you guys, I have already read through all the fixes pertaining to this repair. The problem with this vehicle is the external coolant leaks that are common to this engine. Looks like the repair should be pretty straight forward. My main question is regardin...
1991 Toyota Cressida Luxury 3.0L Starting VIN: JT2MX83E8M
Hi All, The car crank over fine, but would not start. I tested for spark and found that there are no spark. Tested both the ignition coil and ignition control module and they are all good. I really need help on this one. Thanks everyone!
1995 Toyota Tacoma DLX 2.4L No Start VIN: 4TAUN41B1S
help me please!!! this one is making me crazy. i have the tacoma that will start and run perfectly all day long until you shut it off when it is hot, then try to restart it about 10 minutes later. it will not start. it just cranks. fuel pressure and spark are ...
2000 Toyota Avalon XL 3.0L Wheel sensor VIN: 4T1BF28BXY
I am having a problem with the speedo not reading. The pcm had code P0500. The ABS system had codes for the front speed sensors( 32, 33) and the abs controler (code 62). I scoped the sensors, they both had a nice sine wave with about 1 volt being measured at 2...
2001 Toyota Camry CE 2.2L MIL Lamp on VIN: 4T1BG22K61
EGR has vacume while at 2500 rpms,and goes off at WOT,and shows about 22in hgs at cruise.map at engine off is 28.9 in hgs,at idle its 8.3 and 7.4 at 2500 rpms,at one time it was 10.6 at idle,then I cleaned connecters and then it went back to 8,and I feel its t... Trouble codes: P0401 (insuff EGR flow)
2007 Toyota Tacoma 4.0L battery VIN: 5TEUU42N97
hello all, your help is requested in saving my peace of mind this tacoma will sit for days with no problem and then for no apparent reason, loose battery voltage overnight. i have checked the obvious and disconnected the add on accessories, but cannot trace do...
1999 Volkswagen Beetle GLS 2.0L no blower VIN: 3VWCA21C6X
Vech came in today for no blower on any speed. Shop key unable to provide us with the needed schematics for the electrical part of blower. Also where items are located and the such. No power to blower if we apply blower it turns on. My question is there a hidd...
2001 Volkswagen Jetta GL 2.0L Flasher relay VIN: 3VWRB69M31
Hi VW tech's this one has us stumped. If you use the signals the relay will keep clicking for a while after shutting off.. The alarm system when the key is turn on starts going. This alarm problem started after the flasher relay problem, about a month afterwar...
2001 Volkswagen Jetta TDI 1.9L Hesitation, no power VIN: 3VMP2PM21M
this vehicle was in last april for lack of power. we found the turbo rotary vane lever to be sticking. replaced turbo and actuator. vehicle ran awesome. well, its back with same issue: lacks power. unplugged MAF and we gained some power but still not what it s...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1997 Audi A8 4.2L No Start
new fuel tank fixed it!! broken suction line in one of the cavities stopped fuel from filling resevoir. thanks for all your help guys!!
1998 Cadillac DeVille 4.6L Alternator
Thanks to all who replied. Especially Juan,John,and Shaharazad who guided me to the right area. Once the alternator that matched up to the oem number was installed, the car still would not charge. Before the radiator was installed, I re-tightened the 2 pin co...
1999 Cadillac Seville STS 4.6L almost all electrical VIN: 1G6KY5495X
hi. thanks to everyone for their help. it was the used cluster that kept it from starting. now i can fine tune this monster. again, thanks to all...andrew
1995 Chevrolet Lumina LS 3.1L Battery VIN: 2G1WN52M8S
First off I would like to thank Lester, Michael, James, Rodney, Mark, Matt, Cecil, Bill, Dave, Steven, Rick, Richard, and Larry for taking the time to give me a hand. Well here is what I found out. First my Fluke meter was leading me astray, there must be an i...
1998 Chevrolet Malibu LS 3.1L compressor VIN: 1G1NE52M8W
well this one is fixed. hate when i start barking up the wrong tree. Turns out the schematic on alldata does not show that a/c fuse also runs auto headlights, so i was thinking that we had a short. just had a bad clutch coil replaced coil and all is ok. thanks...
1999 Chevrolet Tahoe LS 5.7L Soft Pedal VIN: 1GNEK13R3X
Thanks to all that helped, too many to respond via email. IATN is a valuable resource I'm glad I found it, but you have to know how to separate the doggie do from the icecream. There was something stuck in the ABS, as some members told me.Even though I bled it...
2000 Chevrolet Prizm 1.8L Hesitation, Cuts out, Stall VIN: 1Y1SK5487Y
The MAF was extremely dirty with a black coating. The vehicle stopped stalling and hesitating once it was cleaned, BUT the check engine light came back on a week later with the PO300 random mix-fire. Since the problem is very intermittent once per week I and... Trouble codes: P0300.
2007 Chevrolet Silverado 2500 HD Classic WT 6.0L wipers VIN: 1GCHK29U37
thank you for the help the fuse blew so little average once a week so I put in a used wiper motor on spec been gone since posting hasn't blown again customer happy
2002 Chrysler Town & Country LXi 3.8L abs VIN: 2C8GP54L72
Like I said I had code # P0601. Which was pcm faulty. So I installed new pcm and gave back to cust to see if that takes care of right frt wheel from lok=cking up from the abs pump thinks for your response. Rick [...].
1999 Dodge Durango SLT 5.9L engine VIN: 1B4HS28Z7X
thanks to all the nine members that responded to help but none of the ideas come close to fixing the problem us most of the ideas i was getting related to ignition missfires and i mentioned i was having an engine bivration and not a missfire i also listed his...
2004 Dodge Intrepid SE 2.7L cruise control VIN: 2B3HD46R64
From information I was given I sent the vehicle to the local dealer and the clock spring was fixed at no charge to the customer.
2007 Dodge SPRINTER3500 3.0L sir light VIN: WDOPF44575
1993 Ford Mustang LX 2.3L high head pressures VIN: 1FACP40M5P
I am closing this post due to the fact that our user name and password evidently leaked out. This post was not made by myself nor any of my shops. Thank you though for the assistance and please do not count this for a negative rating. We have since changed our...
1997 Ford E-350 Econoline Club Wagon XLT 6.8L Poor Idle Quality, Misfire VIN: 1FBJS31S4V
Thank you everybody. As usual, just about everybody was dead-on. I was replacing used coils with used coils, thinking; "What's the chance I'll replace a bad coil with a bad coil"? Pretty slim, I thought. WRONG!! What I ended up doing (after all the help I got)...
1997 Ford F-150 Lariat 4.6L Misfire VIN: 2FTDX0761V
Thanks for the help everyone this ones fixed. We suspected a mechanical problem with the motor so we told the customer to pull it back apart and check over his work. Sure enough the cam timing was off on the head he took off. After talking with the customer we...
2003 GMC Sierra 1500 4.8L gauges VIN: 1GTEC14V43
Thanks guys but i never got a chance to try the battery cables. customer took it to the dealer and they found the instrument panel bad and ordered one. hes getting covered under warrenty . im picking up the labor part. Next time ill take my time charging up ...
2008 Honda Civic LX 1.8L Misfire VIN: 2HGFA16568
Thanks for all the suggestions, this vehicle uses a plastic intake manifold with a runner control that uses flaps similar to the 3.8 windstar motor design. Turns out the flapper for number 2 was partially melted and restricting movement. It was very hard to se... Trouble codes: P0302.
1997 Infiniti Q45 4.1L MIL Lamp on VIN: JNKBY31D1V
First of all I appreciate the replys & the time of the members that tryed to help.unfortunately the cust is out time & desided to take it to the dealer.all the replys that I receviced I had all ready post in my first post.thanx again this the field I chose so... Trouble codes: 402 (Egrc-bpt valve problem).
2002 Jeep Grand Cherokee Laredo 4.0L vacuum noise VIN: 1J4GW48S42
cracked intake found upon dissasembly.thanks to all who replied as this was causing me to lose hair.
2000 Lincoln LS 3.0L radiator fan VIN: 1LNHM86S5Y
Apparently there is no easy way to test this system. I started with changing the pressure control solenoid and this took care of the problem. Thanks
1991 Mercedes-Benz 300SL 3.0L wipers & washers VIN: WDBFA61E5M
After 9 replies the consensus was to replace the ignition switch, which we did and the problem is resolved. A few replies were suggesting other components which all made sense, and we did throw all the easy parts at it, but with no results. Thank goodness for ...
1997 Mercury Cougar XR-7 4.6L vent temp VIN: 1MELM62W8V
well it was the evap not fitting tightly into the evap box allowing air to bypasss the core ,now air is blowing 44 degrees and the pressures are down slightly thanks for the help on this one i needed alot of cofidence to want to pull and cut and re-plastic wel...
1999 Mercury Sable LS 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1MEFM53S4X
ended up with bad valve in cyl #6. customer does not want to fix. my fault... i didn't check compression first thing!!! BASIC DIAGNOSTICS!!! Trouble codes: P0306, P1504.
1994 Mitsubishi 3000GT 3.0L Cuts out, Stall, MIL Lamp on VIN: JA3AM54J9R
I thank you all that helped .Your the greatest. The basic ideas I received from you all was that the timing belt had a problem which makes it out of psync between the cam and crank signals.Or a crank sensor that isnt as good as it appears. I checked the timin... Trouble codes: 22 (cam sensor problem), 23 (crank sensor problem).
1992 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZH549XN
Found that the coolant temp sender and engine coolant temp sensor were wired together in series.Also found exhaust to be restricted. Thanks for the help everybody. Trouble codes: 26 (quad driver problem), 53 (info flag esc exceed max valvue).
2000 Volvo S70 2.4L MIL Lamp on, inop VIN: YV1LS61J3Y
thanks to everybody that took their time to reply. everybody suggested the problem being in the abs module (which is common failure on this cars). so we installed a rebuilt unit and it cured the problem. thanks again guys and let's keep up the good work! Trouble codes: P0722, P0717, P0600.
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