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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 16, 2011
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Open Help Requests for All Makes and Models
Help Request Answers
1978 Chevrolet Corvette Silver Anniversary Edition 5.7L AC control head
After having repaired the vacuum AC control switch (fastener missing from the center of vacuum switch holding it together)i had to correct the vacuum lines to the switch. I found the source vacuum line broken at firewall and lost in the firewall (located it wi...
1991 Chevrolet Caprice 5.0L Horn VIN: 1G1BL83EMW
Does any know where the horn relay might be in this car.is it part of the srs module?it is not in the fuse box.
2000 Chevrolet Blazer Trailblazer 4.3L compressor VIN: 1GNCS13W5Y
the ac compressor is rattling bad at idel 80 degress outside low side is at 28 psi hi side is at 150 not geting cold at all bring rpm up to 2,ooo presures drop and compressor shuts off checked inside temperture adjustment and blend door seams to be working i w...
2001 Chevrolet Tracker LT 2.5L MIL Lamp on VIN: 2CNBJ73491
Hello thanks for taking the time to help. I may need factory wiring diagram and fuse details. I have all data here and what I have looked at is the o2 heater relay. I have no power on pin 1 the blu/wht wire. I have power on pin 3 blk/wht wire. I have wiring di... Trouble codes: P0135 (o2 heater), P0141 (o2 heater), P0155 (o2 heater), P0135 (o2 heater)
2002 Chevrolet Silverado 2500 6.0L Spider gears
I have a spider kit set from Motive. Customer bought. I have the carrier removed, and the center pin out, I have never seen one of these, but it looks to me like I have to drive out the pins in order to remove the "lock?" before I can remove the spider and sid...
2006 Chevrolet Cobalt LS 2.2L Accessories VIN: 1G1AJ55F86
This is just a plain old car,when you turn the key on the trunk opens and the brake lights,reverse light come on till you turn the key off.i'm at home and for the service code therre not many,there audio code can't remember the other 2.there is voltage on brak...
1999 Chrysler Sebring LX 2.5L MIL Lamp on VIN: 4C3AU52N1X
Need help--Code po403(egr cicuit short or open)Check engine light always on even if I clear code or disconnect battery. Soleniod won't turn on and off with scanner. Removed egr connector and I have 11.89 volts on one wire.(Battery voltage is 12.13). Put connec... Trouble codes: P0403
1991 Dodge Stealth R/T 3.0L Electronic VIN: JB3XD64BXM
Can anyone give me all the powers to the tcm. think some of the powers come from the engine controller.Know were the gronds are. Just need to know how the the tcm gets powered up. car stuck in 2nd gear
2007 Ford Explorer Limited 4.6L tire pressure monitor VIN: 1FMEU65857
this explorer has two problems. one is tire pressure monitor code b2872. all tires read good. code on after a few miles driving. can't reset. but the biggest problem is oil loss. this customer takes unreal good care of this car. the engine is spotless. no leak...
2004 GMC Sierra 2500 HD 6.6L Oil pressure gauge VIN: 1GTHK23274
Hello all. I got a problem with this oil pressure gauge not working. I got 5v ref.(gray wire) to oil pressure switch and .4v @ idle at connector C107, pin D6 (tan/wht signal wire)and up to 2.6v @ 2500 rpms, are this good values to determine a good oil pressur...
2000 Jeep Grand Cherokee Laredo 4.0L Stall, start, and dies VIN: 1J4G24859Y
Hi techs; customer complain that the car sometimes start and dies, and sometimes run normal for two or three days, and for no reason car dies and start immediately, a visual inspection found to much carbon buildup at the throttle plate, so we recommend a fuel ... Trouble codes: P0320
1999 Nissan Maxima SE 3.0L MIL Lamp on VIN: JN1CA21D1X
To start i would like to say thank you.This problem started 8 months ago.IT came in with check eng light on pulled code po153 B-2 S-1 slow respones.I did a quick check on the o2 it would not respond to fuel or vacuum.I check the wireing go to it all look good.... Trouble codes: P0153
2001 Other Ford Fleetwood 6.8L engine VIN: 1FCNF53S2Y
Customer complained surging/ slipping when trans is put into reverse or low 1 engine stumbles and dies, you can tease the throttle in reverse or in drive 1 and keep engine running if you let the IAC adjust. Takes some work though to get it to idle. The shop wh...
2003 Toyota Highlander 3.0L Abs VIN: JTFHF21AX3
i got 03 toyota highlander 4 wheel drive with abs light stays on.this truck is abs w/o VSC.there are two codes in the abs modual,c1244 decellration senser circut and c1246 master cylinder pressure senser circut.even i clered the code light stays on, with these...
2000 Volkswagen Cabrio GLS 2.0L Hesitation, Vibration VIN: 3VWDC21V6Y
This car came in for 100k service. I replaced tbelt,spark plugs,oil and filter and new front tires.Cust picked up vehicle and stated it was "jerking" on acceleration. What this thing does it feels like it surges on accel then when you get going,25-45 mph only ...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1999 Chevrolet Cavalier 2.2L no crank, no dash lights VIN: 1G1JC5243X
Thanks for all the requests . Todd from michigan had it nailed. also dave form new york lead me in the direction. I had a voltage drop in between the fuse and the ignition switch. i traced it down to a bulk head right before entering the inside of the car. t...
2002 Chevrolet Impala 3.8L races VIN: 2G1WH55K72
Thanks to all who replied. Decided to try another PCM and seems okay. Customer had it back for a week now and no complaints. Thanks again.
2006 Dodge Durango Limited 4.7L Mechanical VIN: 1D4HB38N86
broke system down into sections and test for restrictions, etc. found evap-ok, condenser-restricted, hoses and lines-ok. concluded there must be an internal failure of the compressor that led to a restriction in the condenser. replaced the compressor, condense...
2008 Dodge Grand Caravan SE 3.3L Cooling VIN: 1D8HN44HX8
Okay ... finally got a fix for this one. When I updated, I had ordered a temp sender from the dealer. After installing the sender, it then would overheat at 210* instead of 170* & duplicated this 3 times. Now the pid was indicating the same temp as the infrare...
1998 Ford Escort LX 2.0L shfting VIN: 1FAFP10P3W
Thanks for all the advise, that really helped in leading me into the right direction. I had already tested for power and we also tested for solenoid working and we felt them activating, but because of so many replies leading toward solenoids, we decided to re...
2000 Lexus RX300 3.0L Hesitation, Cuts out, Misfire VIN: JT6HF10U9Y
thanks to all especially William [...]. Cleaned the mass and pulled the efi fuse. seams to run fine now gave it back to customer. Trouble codes: 300 (302 -), 302 (304 -), 304 (306 -), 306.
2001 Mercedes-Benz S430 4.3L Srs VIN: WDBNG70J81
Thanks to all for your help. B1871 Ign Circuit 12 is definitely the right front door air bag, which I was able to confirm with my Snap-On Verus (a nice surprise) as you can read in my update. I talked to my local MB dealer, Parts was not able to locate any kin...
2002 Saturn Vue 3.0L 2-3 shift VIN: 5GZCZ63B02
Whoops!!! The tech that was working on this vehicle thought that it was similar to the Honda. He thought that he could fill it with the handy plug on the top of the trans. not knowing that it was the 3rd band anchor. We accessed the band in the vehicle and re...
2000 Volkswagen Golf GL 1.9L Misfire, excess white smoke VIN: 9BWGF21J5Y
Hello and thanks to everyone and the suggestions from all. I am going to close this case and mark it as fixed as I have detirmined the problem to be bent connecting rods. I removed the cylinder head and checked the height of the pistons when at TDC and found n... Trouble codes: P0301 (16685 Cylinder 1 missfire detected intermittent), P3130 (19586 EGR System Regulation Exceeded Intermittent).
2004 Volkswagen Passat GL 2.0L No Start VIN: WVWPE63B44
Thanks for the replies although it was not a fuel filter issue. What I did was hook up the air canister disable the in tank pump again and get it running, then too the air canister out and hooked teh in tank fuel pump again, cycled the key 5 times to get a goo... Trouble codes: 18628 (O2 B1S1 too high P2196), 17586 (Linear O2 sesnor pump curent open circuit P1178).
2005 Volkswagen Touareg 3.2L Fan Control 1 VIN: WVGZG77L95
Thanks for all the replies, really appreciated. This is a very intermittant problem. I looked at the square wave that controls both fan modules. The frequency of this square wave tells the fan to turn on and off and controls the speed. I could never get it to ...
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