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Prev Professional Automotive Repair Technical Discussions for July 18, 2011
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Help Request Answers
2003 Audi A4 1.8L Mechanical VIN: WAULC68E23
Car came in with a p0301 miss, checked the car, tried a coil, plug, no help. Swapped injectors, no change.checked compression, 140 psi, I tried a few tests, like running the car with a noid light, spark plug in the coil and a compression gauge. it seems like t...
1997 BMW 528i 2.8L MIL Lamp on VIN: WBADD6329V
Replaced said components and still getting codes for the Pre-Cat Oxygen Sensors. In my haste I cleared the codes before saving any Freeze-Frame Data. Cleared Adaptations (which was not performed before when the Oxygen Sensors were replaced, but I'm almost sure... Trouble codes: 230 (E6 Oxygen Sensor Bank 2 Before Catalytic Converter Control Frequency), 229 (E5 Oxygen Sensor Bank 1 Before Catalytic Converter Control Frequency)
2001 BMW 740iL 4.4L Blower Motor Volume VIN: WBAGG83471
we received a show room 740 that has been garage kept. the volume of air coming from the vents is like that of a medium blow compared to other vehicles. it doesn't slowly creep up to a wide open blow like other models and can't remember if these did that or no...
2002 Buick Rendezvous CX 3.4L Battery Light On VIN: 3G5DA03E62
Hi All, Thanks In Advance.. Car came in with battery light coming on at times. Usually when warm and under acceleration. When the light is on the vehicle is charging, I duplicated syptoms and had my meter on vehicle, charging 14 volts. Its not a charging issu...
1994 Cadillac Eldorado 4.6L a/c blower motor VIN: 1G6EL12YOR
a/c fan, blower motor, burning up. Took blower assy. apart and found transisters cooked!
2000 Cadillac DeVille 4.6L Starter VIN: 1G6KD54YXY
Hello, We removed the trans to have TC work done, replaced it and now it will not crank over. I have good power feed from key into computer, good ground from Neutral switch, good power on both sides of the relay. if i jump the starter at relay it cranks over, ...
1994 Chevrolet Corvette 5.7L Surge VIN: 1G1YY32P4R
This car came in with this problem when hot and waiting for the light to change the car will serge. I found the intake gasket leaking and replaced them and checked for cracks and straightness before putting back together. I tried to preform a smoke test but my...
1998 Chevrolet P30 7.4L Fuel pump runs 3 sec VIN: 1GBLP37J3W
Coach came in as a crank no start.vehicle started after holding gas pedal down as if it were flooded.checked fuel pressure (52psi), thats when i noticed that when i cycled the key off the pump ran for 3 seconds. Checked pin 85 @ fuel pump relay (which is feed ... Trouble codes: P0463 (Fuel level sensor circuit high voltage)
1999 Chevrolet Silverado 2500 6.0L drive shafts VIN: 1GCGK24U4X
Have a customer that states gets a harsh vibration while driving that is very intermittant. i have only seen vehicle once and checked front end out and everything checks out ok. we obviously have not been able to duplicate problem and have a hard time getting ...
1999 Chevrolet P30 5.7L Hesitation VIN: 1GBHP32R1X
Cust sayed that that the truck has low power on take off and it come and go's fast it will hape like two to three times a day all temps
1999 Chevrolet Tahoe LT 5.7L transfer case VIN: 1GNEK13R1X
Have transfer case disassembled to replace rear case, oil pump wore hole in case. Clutches are not burnt but front drivesahaft could be turned by hand. NP246 aut should have preload on clutches? Has other issues with sometimes being in 4x4 when was last in 2 w...
2002 Chevrolet Avalanche 1500 Z71 5.3L MIL Lamp on VIN: 3GNEK13T42
hello-had this avalanche come in today. p0449, p0452. removed vent valve from truck and bench tested it with 12v and it seemed to function as intended. apply 12v and ground and it seals shut. checked harness and have 12v feed at valve harness connector. re-ins... Trouble codes: P0449 (Evaporative emission vent solenoid control circuit), P0452 (Fuel tank pressure sensor low voltage)
2004 Chevrolet Silverado 2500 HD 8.1L blend door VIN: 1GCHK23G24
Hello GM Techs, I really need your help on this one. We have a 2004 Silverado 8.1L, that will go hot all of a sudden out of the drivers side vents. It has a manual control head with hot and cold adjustments for driver and Passanger.(They slide up and down). Th...
2005 Chevrolet Equinox LS 3.4L compressor VIN: 2CNDL73F55
I cant get output temp down at dash below 70 deg. low pressure of comp at idle is barely 70 psi. Gets better at 3000 rpm;s any help would be appreciated
1998 Dodge Ram 3500 Truck 5.9L brakes VIN: 1B7MF3354W
repaire history explains it
2007 Dodge Ram 1500 Truck Sport 5.7L shift motor? VIN: 1D7HU18277
Had this Ram towed in today, customer states "intermittent service 4wd message over last few months, this morning it FREAKED OUT on him & left him stranded with no fwd or reverse movement", unable to change t-case range selection, NEUTRAL LED illuminated on sw...
2007 Dodge Ram 2500 Truck SLT 6.7L fog lamps VIN: 3D3KS29A17
Slt truck with no factory fog lamps, customer damaged bumper and supplied a laramie bumper with fog lamps, and proper light/fog lamp switch. Install went smooth, but cannot active lamps, am i dealing with a hidden relay, or must this be activated in the BCM.
1988 Ford Mustang GT 5.0L no start hot VIN: 1FABP42EXJ
came in for no start hot, replace alternator, was not charging enough, also replace battery, one month later replace alternator again. still the same. now charge at 12.79 volts. rev up engine and goes to 13.36v, checked wiring to alternator, seems o/k
2002 Ford F-450 Super Duty XL 6.8L Clutch VIN: 1FDXF46S42
i installed a new clutch from ford in this vehicle, less than 2 weeks later it came back with the center of the clutch broke out. The splines were in good shape but the clutch was broken. Installed new clutch kit again from ford, 2 months ago. It is back with ...
2002 Ford Focus SE 2.0L valve lifter VIN: 1FAFP33P62
Still looses compression on #3 the longer it runs its like the lifter pumps up and does not release
2003 Ford Focus LX 2.3L MIL Lamp on, long crank VIN: 1FAFP33Z23
I believe what I might have is a correlation problem , but cant find a known good cam/crank pattern anywhere. I have a scope pic of what my readings are. I set tdc and checked that the crank sensor is 9 teeth away from the missing tooth . Need some help please Trouble codes: P0340
2004 Ford Excursion Limited 6.0L Hesitation VIN: 1FMSU45P54
Good Morning, Have a 6.0 with a cold engine no power issue. When engine oil temp gets to 110' full power till over night soak. Turbo works fine. FICM has proper voltage(supply and out put), icp @ 37.5% full throttle and pressure 1329 in gear @ 1350 rpm full th...
2004 Ford F-250 Super Duty XLT 6.0L Surge, no power VIN: 1FTNW20P84
Here's what we got. Truck belongs to a fellow who does custom hauling. Truck has always ran good with plenty of power. Down in CA it started to have no power with or without a load. Shop replaced turbo-they installed a high performance turbo. Truck ran good fo... Trouble codes: P0401, P2263
2005 Ford F-250 Super Duty FX4 6.0L No Start VIN: 1FTSW21P25
Worked on the 7.3L DIT for five years and left Ford when the 6.0L came out, since then I only referred 6.0L's to the dealerships for warranty head gaskets. Now I have a 6.0L out of warranty with very low ICP and will not start. Just replaced the IPR with a For...
2000 Honda Accord SE 2.3L 1-2 shift VIN: 1HGCG6694Y
Ok so Boss is ticked.We bought this 2000 honda from our local chevy dealers wholesale line.around the lot it shifted fine,however when driven down the road noticed a very noticable delayed and slipping condition on the 1-2 and 3-4 shift.Check engine light was ...
2007 Honda Civic Si 2.0L MIL Lamp on VIN: 2HGFG21597
Hey guys, 2007 Honda Civic Si. Cel is on with code p0172- too rich. Freeze data is: load 35.68%, ect 73c, STFT -20.31, LTFT -20.31, MAP 38KPa engine speed 909rpm, vehicle speed 0kph, timing [...], IAT 43c, TPS 14.11%, At idle map 0.86v, maf 1.14v, tp 0.65v,... Trouble codes: P0172 (System too rich)
1988 Jaguar XJS 5.3L Fuel small VIN: SAJNA5840K
The customer brought the car in because he is frequently smelling fuel in the cabin and, when you open the trunk lid, in the trunk. I have verified the smell, and have taken the trunk apart far enough to tighten all fuel line clamps. There is no obvious leakag...
1997 Jeep Grand Cherokee Laredo 4.0L No Start, Cuts out, Stall VIN: 1J4GZ58S6V
have this jeep that is shutting off and confirmed when no start there is no spark. the coil is getting 12v from the asd relay. im checking resistance from coil driver to ground and it is 4.9 ohms spec says under 5 ohms. check coil driver from pcm connector to ... Trouble codes: 43 (ignition coil 1 driver cicuit)
2000 Jeep Cherokee Sport 4.0L Tcc VIN: 1J4FT48S1Y
This is a rural mail jeep that belongs to a regular customer. This vehicle has had a P0740 in it for the last three years. We were sure it was a internal trans problem but every time we tested it the TCC was operating as designed. We would clear it out and it ...
2004 Land Rover Discovery S 4.6L cly 5 VIN: SALTY19474
vehicle came back customer said he was still lossing coolant, but at a verry slow rate (used a gallon and a half on a 1600 mile trip). said he had an intermittent miss on cyl.5 (customer failed to tell us on his first trip in that he had an intermittent miss o...
2005 Lexus GX470 4.7L abs VIN: JTJBT20X35
The code is c0278. The abs sol. relay is inside the abs sol. on the side of the master cyl. best as I can tell. Checked power and grounds, all good. Lexus wants $1111.32 for the solenoid, too expensive a guess for me. Anybody have experience with this?
2002 Maserati Spyder GT 4.2L Immobilizer VIN: ZAMBC38A82
Hey there. My boss insists on working on this car despite our inability to access maserati data. I have a code p1570 which i pulled with my 75 dollar obd ii code checker because my high dollar scan tool couldn't do the job... Anyway. Got to looking on google a...
2004 Mazda MPV LX 3.0L fuel pump VIN: JM3LW28J44
no gropund control to fuel pump rel;ay control. ohm check from socket to pcm is 166 ohms. looks like a broken or almost broken wire but WHERE is the question wire isa a red with white tracer and goes from fuel pump relkay to ecm/pcm pin 80
2005 Mazda RX-8 1.3L Electronic VIN: JM1FE17365
This cars ac blows cold,then suddenly will blow hot air,you can turn the temp knob to hot then it goes back to cold,so am i dealing with a blendoor actuater problem or a reostat, alldata doesn't offer much info on this car,so any help would be great.
1987 Mercedes-Benz 560SEL 5.6L Poor Idle Quality VIN: BA48D4HA06
HELP!!! Thanks for taling time to check this one out. Car came in with complaint of hesitation and very poor idle quality. Our first finding was the wire to the positive lead at battery that feeds the overload protection relay was disconnected. we also replace...
1998 Mercedes-Benz C230 2.3L a/c compressor VIN: WDBHA23G8W
Hey i have already found the fix for this car, but i am looking for the procedure on replacing the evap temp sensor. i cannot find any times or if i have to remove evaporater completly. locator says it is located above gas pedal. if anybody can give me some di...
2002 Mercury Villager (Van) Sport 3.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 4M2ZV12T82
Removed pug tranferd to number 3 cylinder three.Ran engine pulled #2 spark,pulled inj harness both gave no change in rpm.Spark showed 20 KV Trouble codes: P0302 (Cylinder number 2 miss fire)
1989 Oldsmobile Cutlass Ciera 2.8L No Start, Stall VIN: 2G3AM51W5K
hello all and thank you in advance i have a 89 cierra that starts then stalls as soon as you release the key i checked all power and grounds at the ecm and all is good there are no codes in it i cant be for sure but i think it loses spark when it stalls i have...
1980 Other European CMC 174CID AC Compressor VIN: SCEDT26TBD
Hi, looking for some information on the low side cut-out switch and wiring on this thing. Vehicle was cycling rapidly (on for 5 sec., off for 10-15 sec.) when it came in, we added proper amt. of R12, 2.75 lbs. Still cycles the same frequency, doesn't cool. The...
2007 Other European truck 781CID noise VIN: 0460876115
had droped valve in number 3 cyl replaced head rod and piston now have noise in other cylinders have checked push rods and valve setings any one seen this in this low millage motor cause? also replaced #1#3 injector thanks rob
1994 Pontiac Firebird Formula 5.7L Fuel VIN: 2G2FV22PXR
This is one that is stumping everyone I know. '94 Firebird Formula LT1. The car had been sitting for 5 years or so when I rescued it. Mileage then was 103,000. I replaced the tank, sending unit, fuel filter and fuel pump because the tank was full of rust. The ...
1984 Porsche 944 2.5L Excessive Emissions, Poor Idle Quality, Surge VIN: WP0AA0941E
First let me thank all the great people at iatn, and all the followers, all of you are great. This car came in about 3 1/2 months ago. It started out with poor accelleration response and running rich it would almost burn your eyes out in the we replace...
2001 Saab 9-5 2.3t 2.3L Tcc VIN: YS3ED58EX1
This SAAB is my personal vehicle, in a pinch. When hot no power taking off, SES light on. Codes p0741, P0743. I replaced the TCC solenoid. After completion of repair, its stalls immediatly in drive. With the wheels off the ground transmission sounds terrible, ...
1997 Saturn SW1 1.9L starter VIN: 1G8ZH8283V
This car came in with random no crank problem. All fuses good,main grounds check ok,came in with new starter on it. on initial checks found to have no output on yellow wire at ignition switch when car acts up,switch right,wrong! Replaced the switch and it didn...
2007 Subaru Forester X 2.5L Compressor VIN: 1F1SG63637
Thanks in advance to all. We have this 2007 subaru forrester x that the a/c system cycles every 60 seconds or so. The customer states it never cycled untill we replaced the evaporator and the rec/dryer 2 weeks ago. Pressures are lo-30psi hi-200psi at an idle s...
2004 Toyota Sienna XLE 3.3L right rear brake pads VIN: 5TDBA22C94
Right rear brake pads wore out in 3000 miles. Original Brake Service - Slight restriction was felt when pushing piston in so after normal tests (opening bleeder & cracking open line), determined outer brake hose was bad. Replaced it, all pads & machined rotors...
1999 Volkswagen Jetta Wolfsburg Edition 2.0L Ignition Switch VIN: 3VWPB61H2X
I am in the middle of replacing the ignition switch and my instructions tell me to drill a 1/8" hole into the key assembly to be able to depress the locking spring clip. It reads in part; A. Draw a line 10 mm from the end of the aluminum housing going down t...
2001 Volkswagen Jetta GLX 2.8L Stall VIN: 3VWTG69M21
Thank you all in advance for any suggestions you may have. I see few German cars--mostly American and Asian pickups, SUVs, and some cars. The customer says that the Jetta has stalled several times for her when driven around town or idling. Then it will not res...
2002 Volkswagen Passat GLX 1.8L MIL Lamp on VIN: WVWPD63B22
I have VAG code 16396 (P0012) and MIL Light on with no drivability issuses. Found discription for the code to mean the camshaft retard is not working. I checked oil pressure, camshaft bearings for wear and found nothing. Went in data block 91 it shows the comp... Trouble codes: P0012 (Bank 1 Camshaft Advance Adjustment Spec. not Reached), 16396 (VAG Code)
2004 Volkswagen Passat GLX 2.8L Surge, Stall, Pinging and setting VIN: WVWRH63B84
We have replaced the replacement engines wiring harness with the old one, we have swapped both cam sensors, we have looked at everything we know to do. I have racked my brain on this car for over a month and the customer is about to loose it with us. Am i miss... Trouble codes: P0346, 00341 (cam sensor signal plausibilty bank 1)
1999 Volvo S70 2.4L MIL Lamp on VIN: YV1LS55A0X
have two 1999 volvo s70 that i'm trying to reprogram and read live data from the engine computer(ecm).I have the cardaq-plus J-2534 from drew technology. I have installed vida all in one 2011b edition on my computer and was able to read codes.What i need to kn...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2007 BMW 328i 3.0L MIL Lamp on VIN: WBAWV135X7
thanks to everybody that responded. this car almost tricked me. after I switched both cam sensors and the code still stayed with the exhaust side I automatically thought timing was off. I opened the oil cap and watched to see if the cams were turning and I tho... Trouble codes: 2AA1.
2004 Buick Rendezvous CX 3.4L Cuts out VIN: 3G5DA03E84
After checking voltage and voltage drops going to the PCM and decided it was the PCM, installed new PCM and programed and it now runs and drives perfect.
1999 Chevrolet C1500 Suburban LS 5.7L Misfire VIN: 3GNFK16TR6
Thanks to everyone that answered back, it was split about 50/50 as to replacing one injector or the whole assembly. We went over the replys with the customer so that he could make a decision. The feed back was a great tool to the eventual solution. It was deci... Trouble codes: P0174 (System too lean bank 2).
2001 Chevrolet Monte Carlo SS 3.8L dead coil 2/5 VIN: 2G1WY15K41
Thanks to everyone that put me on the right track. Pulled the harmonic balancer and checked the fins-no problem. Put balancer back on and since I don't have a scope I checked the CKP the old fashioned way. Attached a DVOM to yellow and Trouble codes: P1374 (CKP high to low resolution frequency correlation).
2004 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNDT13S84
Thanks for all of the replies. I performed a complete drive cycle with no codes returning. Even after the drive cycle the rear O2 was up at 800Mv. We sent the customer on his way and he was happy with no complaints. Trouble codes: P0128, P0132, P0172, P0455, P0410.
2004 Chevrolet Malibu LT 3.5L turn signals VIN: 1G1ZU54864
we ended up putting in L.E.D. bulbs in this vehicle , was the only fix we could find. honestly, we did not want to do this but we had no choice in the matter. it seems ok at this time. and if it does come back i will let everyone kmow thanks for all the input ...
2005 Chevrolet Malibu LS 3.5L Exhaust Valves VIN: 1G1ZT52875
Good morning Finally had some time to dig into this project once again and removed the timing cover. The key on the crankshaft gear broke allowing the the valve timing to be out of sync, I am just shocked that it ran and did not bend any valves. I am sure w...
1999 Chrysler Sebring LXi 2.5L Operation VIN: 3C3EL55H4X
The replies were unanimous and correct, bleed the system again. I thought the system was bled because the top worked. After performing the suggested bleeding procedure several more times I could hear the difference in the operation. It took about 5 bleeding cy...
2000 Chrysler Town & Country (Van) LXi 3.8L fuel gauge VIN: 1C4GP54L2Y
removed rear panel and checked ground 302, it was clean and tight. did voltage drop check from tank to ground, drops over 5 volts. removed carpet and inspected harness. could not physically find ground circuit damage. ran new ground for a sender fixed problem....
1996 Dodge Grand Caravan 3.0L instument panel VIN: 1B4GP54LXT
This vehicle is fixed.We ended up replacing the instrument cluster.When we checked the draw it went away after unplugging the instrument cluster.We had access to a cluster so we tried it and it worked.We still questioned before we put in cluster if the bcm was...
2000 Ford F-150 XLT 5.4L Cluster VIN: 1FTRX18LXY
Well this one is fixed, I went through all of the wiring etc, had power to the EEC relay but not fuses 18 & 23. If I power up that circuit, the vehicle will start and cluster comes back to life, I disassembled the under-hood fuse box and where the wiring from ...
2003 Ford Ranger XL 3.0L Fogging VIN: 1FTYR14V83
2006 Ford Taurus SEL 3.0L Poor Idle Quality, MIL Lamp on VIN: JFAFP56U16
i want to thank everyone who has answered it was the catalytic blew a 2 on back pressure. and the front a half. so thanks agian to everyone Trouble codes: P0171.
2005 Honda Civic Hybrid 1.3L Charging VIN: JHMES96685
Thanks for the replies, don't know what to say, I went to tow the car to the dealer after it sat with a dead 12v battery for two weeks. It was working when I jumped it to put on the flat bed. The dealer reprogramed the IMA under warranty and when I got it bac...
2005 Jeep Grand Cherokee Limited 5.7L Electronic VIN: 1J8HR58205
Customer has not returned yet. I did check all of the power & grounds to the relay and found all of them good. Two of you guys said that the IPDM could be the cause. One suggested that I check the ground circuit for the relay, which I did. Another said possibl...
1999 Kia Sportage 2.0L alternator VIN: KNDJA6237X
Thanks to all for the help on this one turns out that the negative ground cable was the culprit!!! A new groung cable did the trick.Thanks for all the feedback!!!
2004 Lincoln LS 3.0L Hesitation, MIL Lamp on VIN: 1LNHM86S44
I really screwed up the update and Iím not aloud another. So in order to add more info, I need to close with summary. This car is not fixed And I DO need more help. After the car is fixed I will then post the fix. We are now getting a P0135 Oxygen sensor Bank... Trouble codes: P2135 (TP sensor a/b voltage correlation), P2106 (TAC Forced Limited Power).
1999 Mercedes-Benz C280 2.8L Steering Lock, Ign. switch VIN: WDBHA29G5X
Got it, 2 of you were correct. Lack of experience on my part. My diagnoses was correct in that it needed a new EIS. What I did not know is that the orange key is to "initialize" the new EIS. Inserted orange key, waited for LED to go out, installed old key and ...
2000 Mercedes-Benz ML320 3.2L sunroof VIN: 4JGAB54E2Y
Thanx to both who answered ! both close, but you need to remove the PDC from the kick panel in order to see, touch and fix it. We had to go there anyway due to electrical problems that go with water entry, like that green stuff (corrosion) Thanx to all...
2000 Toyota Tacoma Limited 2.7L Misfire, MIL Lamp on
injector 4 was the problem. I swapped it with cyl 1 and the misfires moved to cyl 2 3 4. Replaced injector, truck ran no misfire. Trouble codes: P0300.
2000 Volkswagen Golf GL 2.0L No Start VIN: WVWZZZ1JZ1
Hi, all and thanks for your help. This car has been fixed, after testing everything it turned out to be a ecu fault caused by a blown coil. The ecu was sent out to bba reman and they repaired it. New coil fitted everything ran nice. Thanks again. MAt
2002 Volkswagen Jetta TDI 1.9L Rotors VIN: WVWSP61J72
I haven't fixed the car as of yet. It takes too long for the problem to reoccur anyway, Mr. IATN would close this post long before I knew for sure anyway. I was able to obtain the car for a night. I took the car home and was unable to get the brakes to drag or...
2006 Volkswagen Passat 2.0T 2.0L Cuts out, MIL Lamp on VIN: WVWAK73C26
SORRY TOOK SO LONG.CUSTOMER HAS NOT BEEN BACK.DROVE VEHICLE TWICE WITH NO PROBLEMS OR CODES SET.ENGINE SPEED SENSOR MUST HAVE BEEN SHORTING OUT INTERMITTANTLY.THANK YOU TO ALL THA [...] RESPONDED.ONE MORE FARFANUKEN ON THE ROAD! Trouble codes: 256 (M.a.f. Supply voltage), 801 (Engine speed implausable), 1092 (Evap. Purge system), 51 (Turbo control valve circuit), 579 (Turbo solenoid valve a circuit), 48 (02 sensor bank 1 sensor 1 open circuit).
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