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Prev Professional Automotive Repair Technical Discussions for December 5, 2004
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Open Help Requests for All Makes and Models
Help Request Answers
1996 BMW 750iL 5.4L Surge VIN: WBAGK2329T
helo this car came in because the customer stated the car surged at traffic lights while his wife was driving.i checked for codes no codes i sprayed carb cleaner around in take it made slight difference thats why i changed gaskets i taught every thing was okay...
1993 Buick Roadmaster 5.7L timing chain/damper area VIN: 1G4BR873PW
Thanks in advance for any and all suggestions. This rattle sounds like a dry bearing in an alternator or compressor. Only occurs with the engine warmed up and is most noticable when the engine is accellerated and decellerated in neutral/park. Also occurs for a...
1993 Buick LeSabre Limited 3.8L A - B solenoids VIN: 1G4HR53L3P
Hello, I hope somebody has seen this before. This Buick came in with - NO 4th gear and TCC engagement. Tested for TDC's and live data this is what I found: 1) Code 39- TCC engagement failure. 2) TPS voltage low 0.32 @ idle - should be at least 0.40v. 3) Quad M...
1996 Cadillac Seville STS 4.6L coolant leak VIN: 1G6KY5298T
Hello, I need help from you cadillac techs out there and thanks In advance for any responses. I have a 4.6 that Is leaking a very small amount of coolant from the front block area but I can't see where exactly. It Is coming from an area by some sort of sensor ...
1988 Chevrolet C1500 Cheyenne 5.0L transmission
this is an old beater not much info trans was rebuilt new vacume modulator trans will not shift unles put a vacume pump on the modulator and make it shift the intake is leaking coolant so im going to replace the gaskets monday and check all the vacume ports on...
1997 Chevrolet P30 5.7L Misfire, MIL Lamp on VIN: 1GPKP32R2V
We have replaced the EGR valve--- Ohm'd out the wires to the VCM from the EGR (all OK)-- Still have P1406 reseting after a few test drives-- Camshaft position sensor reads -1 to 0 degrees (normal range is + or - 2 degrees) No plug wires run close to the wirin... Trouble codes: P0161 (O2 Heater ckt problem --bank 2 sensor 2), P0341 (CMP sensor circuit out of range), P0340 (Camshaft position sensor problem), P1406 (EGR pintle position ckt. problem)
1997 Dodge Ram 2500 5.9L Mechanical VIN: 1B7KF26D2V
OK folks, This is the Va Farm Vehicle of my favorite (only) 100 lb S*** kickin, horse lovin, 357 in the Tupperware drawer, moved-away-from-home, doin better than the rest of us daughter. She sez after 20 miles at 60 MPH the hydroboost brakes on this truck ar...
1999 Dodge Intrepid 2.7L MIL Lamp on VIN: 2B3HD46RXX
Hi Guys, I have a code P1493, Battery sensor voltage low, with the MIL light lit up. I hooked the Modis to it and the battery temp voltage was 2.5. Another problem is it will not clear the code out of the computer even if I just try to clear it and turn the ke... Trouble codes: 1493 (low batt sensor voltage)
1987 Ford E-350 Econoline Custom 7.5L No Start, Stall VIN: 1FDKE30L5H
Hello all readers Seems that the 15A fuse that protects the circuits to carburetor ( Throttle kicker vacuum valve, throttle positioner solenoid, float bowl solenoid, ) seat belt warning buzzer, engine speed module , oil pressure switch , and fuel pump cut-o...
1995 GMC C3500 Sierra SL 5.7L Hesitation, Poor Fuel Economy VIN: 1GTHC39KXS
Hi Guys Hopefully someone can point me in the right direction or suggest something i missed.This truck came in with complaint of rough idle and backfiring,also tach not working jumps at highway speeds.I replaced the complete distributor due to the magnet was c...
1999 Mercury Sable LS 3.0L MIL Lamp on VIN: 1MEFM58S1X
I have a Sable will LT fuel trims on both banks in the 20-23, I have check for vac leaks and found none and check MAF sensor, It was clean and voltage looks good. Baro was 153, ok for 1100 feet. Freeze frame shows ST fuel trims 10.9 and LT 20.3 bank 2. ST FTs ... Trouble codes: P0174 (Lean bank 2)
2001 Oldsmobile Bravada 4.3L transfer case
I have did ever thing that I can think of at this time. I consider myself pretty good at fixing these 4wd issues. Is it possible there is a bad speed sensor on the transfer case
1999 Volkswagen Beetle GL 2.0L a/c compressor
the a/c compressor dont engage in idle.if you raise the rpm till 3000 or more the a/c works perfect.but if you leave in idle again the a/c compressor disengage.i checked the battery and is good.then i checked the alternator and gave me 12.98 v.in idle,when rai...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1980 BMW 633CSi 3.2L blower/compressor VIN: 0005555473
Thanks for all the replies. Special thanks to Rick from MotorWerks, Chuck Jeckell, Micheal [...]. The faxes kept rolling in and each one helped me locate a bad microswitch at the back of the temp control section. This is a grounding circui...
1992 Buick Roadmaster Limited 5.7L Surge, Poor Fuel Economy, Stays in Clear Flood VIN: 1G4BT5372N
Thanks for all the help. I replaced the TPS with an aftermarket one, no change. Replaced with GM, vehicle repaired. Thanks again for all who replied. Allen
1993 Dodge W250 5.9L overdrive VIN: 1B7KM26C7P
sorry to have to close w/out a fix, but the customer pulled the plug on this one.my mistake was telling him that o/d worked when grounded manually (he says he'll put in a manual o/d switch). love to see how long the transmission lasts when he forgets to shut i...
1998 Dodge Ram 2500 5.9L rocker arm/lifter VIN: 3B7KE22Z0W
this dodge was a breeze to repair... due to lack of repair previously.. new heads, exhaust manifolds, lifters, head bolts and pushrods. all this was due to it being a plow truck and not doing any maintainance to it. turns out that the noise was a large piece o...
1993 Ford Ranger STX 4.0L clutch line VIN: 1FTCR15X8P
Well no one had an answer, so this is how it went. I had them re-order the correct part # again to make sure it was not repacked wrong. They then ordered one for a 1992 which was closer to the right angles, but had the wrong end for a 1993 slave...so with some...
1994 Ford Explorer XL 4.0L Front auto-locking hubs VIN: 1FMDV34X9R
Hi Thanks for all the replies!! The general consensus was that these hubs are junk and to go with some Warn or other aftermarket manual locking hubs. Normally I would do this but given that this vehicle belongs to a 70 year old couple, I am trying to locat...
1990 Jeep Comanche 4.0L Poor Idle Quality, Cuts out, Misfire VIN: 1J7FJ26L5L
As Richard from Houston recently said, Manmade problems are the hardest, but with direction from Kenneth in Arkansas, I turned my attention to the Crank sensor. Thanks for the specific location directions. Only took a few words to put down, and I appreciate it...
1999 Lexus RX300 3.0L Transmission VIN: JT6HF10U2X
Thank a lot to all of you that replied!I removed the trans oil pan and found aluminum dust and fragment debris.so the problem was the transmission.custom just want to do transmission oil & filter change.she told me she may trade in or repaire later.thanks to P...
1989 Mazda 626 LX 2.2L Stall VIN: JM1GD2215K
Hello. Thanks to you all that sent me suggestions on fixing this headache. After I spent just over a week of periodically checking this car inside and out, my employer decided to send this vehicle to the Mazda dealer. They inturn told us that it was a torque c...
1998 Mercedes-Benz ML320 3.2L MIL Lamp on VIN: 4JGAB54E4W
Thanks to all who replied, most thought the maf was faulty or contaminated... and indeed it was. The new maf cured all problems. Several replies suggested resetting fuel trim values and then drive under hard accelleration. The Benz would hesitate and backfire ... Trouble codes: P0170, P0173.
1994 Nissan Pathfinder LE 3.0L No Start VIN: JN8HD17YXR
thanks to mark and felipe right on the money turned out to be the ecm,sorry it took so long to get back,took a while to get part, had to order in from california (believe it),well thanks to all that responded
2001 Nissan Pathfinder LE 3.5L Hesitation, MIL Lamp on VIN: JN8DR07Y61
Thank you for the replies. Most said MAF, and I agree. The owner of our company found the dipstick missing, and was convinced that was the problem. I plugged the tube off while the replacement dipstick was being ordered and released the vehicle. That didn't fi... Trouble codes: P0171 (Lean Bank One).
2001 Pontiac Aztek 3.4L MIL Lamp on VIN: 3G7DA03E01
I haven't repaired the Pontiac yet, had it in the shop for 10 minutes 2 weeks ago. I pulled the temp connector to check the connection, clean and tighten it up. Still have the same problem. I'm getting the car back in the shop for some time to work on it next ... Trouble codes: P0128 (Coolant temp problem), P1189 (oil pressure problem).
1997 Toyota Corolla 1.6L Mechanical VIN: 1NXBA02E5V
The swap worked out.The only problem i ran into was the geo had a pick up in the drsb.The Toyota had a cps.so i swaped the oil pump housing.All is well.
1996 Volvo 850 GLT 2.4L MIL Lamp on VIN: YV1LW5548T
This was a vacuum leak issue at the flame trap. Robert from Va, Robert from Tx, Yuval from Ma & Simba from CA knew the score. Another one of those vehicle specific trick questions. I'm getting tired of this. Think I might bow out & tell the kids to stick with ... Trouble codes: P0133 (B1 S1 slow response).
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