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Prev Professional Automotive Repair Technical Discussions for August 7, 2004
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Open Help Requests for All Makes and Models
Help Request Answers
1991 Buick Skylark 3.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G4NV54N3M
Ok..This car came in with customer saying sometimes it backfired a lot while at idle...Code 42 is current. Electronic Spark Timing... Now I have had some work with the 3.8 in this area so I am thinking its a similar setup... It must have a bad connection..in t... Trouble codes: 42 (EST Circuit Error)
2001 Chevrolet Silverado 1500 4.3L Misfire VIN: 2GCEC19W61
Came in running bad on a wrecker. Found code P0300 Cap was corrided changed cap, rotor, wires, plugs, and fuel filter. Still had a misfire, on cylinders 1,3,5. All on the same bank. Changed the o2 sensor, still missing. Tried a distbutor and still missing. See... Trouble codes: 0300 (ramdon cyl. misfire)
1998 Chrysler Town & Country LX 3.8L Reverse VIN: 1C4GP54L8W
Hello all, This minivan runs well no problems in forward gears. In reverse and power braking but allowing van to move slowly you can get the same feeling to a lesser degree than what the customer complaint is, which is when backing on an incline the powertrain...
1994 Ford Mustang 5.0L code output VIN: IFABP40E7O
Hi everyone, Thank you in advance for you help. This is a Kit Cobra car that used a 94 mustang as a donor car. It has the wiring harness, computer, engine, trans, fuel tank, ect.. I hook up my snap-on scanner and try to run koeo test and it starts the test by ... Trouble codes: 96 (Fuel pump power not detected)
1998 Ford Expedition Eddie Bauer 5.4L 4 Wheel drive VIN: 1FMPU18L2W
Hello All, I have inherited a nightmare Expedition that has been to 2 dealerships,a transmission shop and several independent shops. The problem started after a shop repaired a torque converter seal and resealed the rear transfer case cone. The customer states...
1994 GMC Sonoma SLE 4.3L Surge VIN: 1GTCS19W3R
Hi all. I have inhehearted a problem child from another shop. They have installed a rebiult motor, the engine oil cooler lines let go, destroying the original motor. Cust states that since the motor was installed, it has been a complete dog, no power whatsoeve...
1995 Honda Accord EX 2.2L bucks slightly VIN: JHMCD5566S
Hi all. I thought a major service would cure this car up of its slight bucking, which though present in all gears, is most noticeable in 2nd at 2250 to 2500 RPM, at steady cruise, and even more noticeable for a moment just as you let up on the gas. The car d...
1994 Jeep Wrangler SE 4.0L abs module VIN: 1J4FY29S3R
Hey folks- i had this jeep come in with a broken brake line- i would fix one and another would brake- so i ended up replacing 3 brake lines on this total- ive bled the brakes manually and the pedal still feels low- i have tried to bleed the abs unit with the m...
1997 Kia Sportage 2.0L Poor Idle Quality, MIL Lamp on VIN: KNDJA7236V
Help all you Kia guys! This Sportage came in with th po101. Another tech installed a new MAF. Car backed out of shop and the mil lit up. Same code. I searched the knowledge base and it seems that the consensus is that these guys have ground problems. I added a... Trouble codes: P0101
1995 Mercury Grand Marquis LS 4.6L MIL Lamp on VIN: 2MELM75W0S
check engine light on with code po401. (egr flow insufficient detected).checked wiring for bad connection, disconnected and cleaned the sensor and computer connections. disconnected and cleared code two to three times. the code came back in about 10 miles. con... Trouble codes: P0401
1998 Mitsubishi Mirage DE 1.5L No Start VIN: JA3AY11A9W
Please help me folks...I want to fall on my sword..so to speak...Anyway, vehicle towed in for a no start condition. Had found to have no spark. I admit I didnt put a whole lot of thought into the initial diagnostics. I went strait for the distributor as a comm...
1986 Nissan 300ZX 2+2 3.0L MIL Lamp on VIN: JN1HZ14S3G
on accel , upper rpm's it will bog but not die out if you feather peddle will stop and run fine seams intermitten ecm gets kind of hot to if need to ask i will answer please help last car left from prior tech then i get to make so money !
1992 Plymouth Acclaim 2.5L Poor Idle Quality, Hesitation VIN: 1P3XA46KZN
during steady throttle or acceleration, the vehicle will feel like it's running out of gas. though you hold the gas pedal constant, the vehicle slowly decelerates. fuel pressure tested a little above specification and the throttle injector was leaking gas. we'...
1999 Plymouth Grand Voyager 3.3L Hesitation, Cuts out, MIL Lamp on VIN: 2P4GP24G9X
The customer called in and reported a hesitation and MIL on. After they drove it the rest of the way home they called and said it was ok now and they would bring it in when they could. A week later they called and it wouldn't start crank no start. The ENG fuse... Trouble codes: P0132 (O2 sensor B1S1 high voltage/short to voltage), P0138 (O2 sensor B1S2 high volt/short to voltage pending code in gen obd)
1990 Pontiac Grand Prix LE 3.1L Poor Idle Quality, Cuts out, Stall VIN: 1G2WJ14T8L
hi teem customer brought this in after working on it trying to save a shop bill he replaced the ecm with wrecking yard part he tells me he tried two different ones the last one came off one that was still running car stll has same symtons. i scanned it and fo... Trouble codes: 22 (tps)
1977 Porsche 911 S 2.7L Poor Idle Quality, Stall VIN: 9117210653
This car does not idle well. Admittedly I know very little about Porsches. Just sitting in the shop it does not idle too badly. The customer says when the engine temp reaches about 200 degrees it begins stalling. And since it is a manual tranny it is nearly im...
1990 Volkswagen Fox 1.8L No Start, Cuts out VIN: 98WGA2302L
car towed in dead. Started and ran to drive in bay. car ran for about 45 minutes and died. fuel pressure checked at cold start valve reads 85-90 lbs when car is running well, drops to 40-45 lbs when car dies. close off fuel gauge return line and pressure rises...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1991 Acura Legend L 3.2L Plugged EGR VIN: JH4KA7660M
Thanx to Steve48 we saved our customer a few hours of labor. He advised me that there was no need to remove the intake manifold. All we needed to do was remove the necessary parts to get to the tube running into the intake manifold and dig it out from there......
1999 Audi A4 1.8L Poor Idle Quality, Misfire VIN: WAUCB28D2X
Thanks to ten people who took time to reply: Alex [...].It was the power stage or end stage and everyone had the same response; the end stage.Than...
1993 BMW 325i 2.5L Electric windows VIN: WBACB3315P
Thanks for the help. The cutout switch is to the right of the steering column. One wire was pulled off. After reattaching the wire the windows worked for about 30 seconds and then quit. The comfort relay went bad. ??? Replaced the relay, and all is good. T...
1995 Buick Century Special 3.1L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 1G4AG55M9S
Did not get much help on this one. It was not the EGR Valve solenoids...I believe the problem lies in the trans control. 2nd gear solenoid has low resistance...14ohms...although I did not get the chance to repair the vehicle I do believe that is where the prob... Trouble codes: 341 (Intermittent Cam Signal), 755 (f31 trans sol b error), 740 (tcc error), 1650 (Quad driver B error).
1995 Chevrolet C1500 Cheyenne 5.7L power door locks VIN: 1GCEC14K5S
Hello all. finaly got this truck out of here. actualy i feel kinda stupid after all. the problem turned out to be of course in the RH door wiring harness. since this truck been to body shop for a door replacement ,the body shop replaced a 95 c/k RH door with a...
1995 Chevrolet Blazer 4.3L fuel/spark VIN: 1GND145WL8
Thanks to everyone's help on this one. It drove me crazy but it turned out to be the wire that was connected to the alarm system which was installed not too long ago and it happened to be going to the ignition wire. Thanks to everyone who told me to check the ...
1999 Chevrolet Tahoe LS 5.7L 1-2 & 2-3 shift VIN: 1GNEK13R1X
hello all. 16 replys in all. talked to owner of truck and gave options from shift kits to dealer valve body. owner decided to trade in truck. thanks to all who replied. this was my first time requesting help and the response was great .this is a great source o...
2001 Chevrolet S10 4.3L Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GCDT19WX1
Thanks to all who replied. Even though we had swapped the MAF,during troubleshooting, with a supposedly known good one from another vehicle, the truck was still suffering the same symptoms. After several test drives the symptoms were caught on a snapshot on th... Trouble codes: P0171 (fuel trim system rich bank 1), P0174 (P0122- TPS circuit low voltage), P0122 (TPS circuit low voltage).
1994 Chrysler LHS 3.5L HI Beam VIN: 2C3ED56FOR
I replaced the multifunction switch Like most of my replies recomended. I kind of figured out that was the problem but it never hurts to get 4 more opinions.Again thanks David, Paul, Paul and Matt. David
1995 Dodge Neon High Line 2.0L expansion valve VIN: 1B3ES47CUS
Ended up being a bad compressor, replaced condensor also for good measure. System works great. Thanks for all the input.
1996 Dodge B2500 5.2L No Start, MIL Lamp on VIN: 2B6HB21Y9T
the problem was front o2 sensor wire had rubbed on the top of the trans case.the 12volts went to the sensor ground shorting out the asd relay.fix that and now had 5volts key on engine off on the sensor ground wire.ran all the sensor grounds to ground at the cy...
1993 Ford Mustang LX 2.3L MIL Lamp on VIN: 1FACP4IM9P
all three responses gave me different definitions of these codes, apparently ford has no set defining. after working with car some more I did get it to set a 223 again as well as the usual 224. I checked the IDM resistor looked fine. what I did was to replace ... Trouble codes: 224 (refer to 8a).
2001 Ford E-350 Econoline 5.4L pads and rotors VIN: 1FTSE34L81
Thanks for the info on manufacturer special backing plates available for this vehicle, they keep all dirt out and probably keep rotors cooler too. I already had the special raybestos special duty pads on it. The vehicle is loaded and one commentary was to beef...
1992 Honda Accord EX 2.2L Excessive Emissions VIN: 1HGCB7677N
Thanks to all who replyed,had suggestions for egr,timing and cat.Cat is new,checked timing,right on,R+R egr valve cleaned ports[very carboned]cleaned egr vavle seat,checked vavle for holding vac,ok.Replaced spark plugs with NGK's.Tested egr on engine[it stalle...
1985 Nissan 720 2.4L No Start VIN: JN6ND06SXF
Thanks for all the responses! I did the voltage drops and I didn't see more than a 1/2 volt drop on the power and the ground checked out as good. Amazingly the truck had started several times, but I knew it wasn't fixed. The owner was happy to just pay a tow b...
1992 Pontiac Grand Prix SE 3.1L No Start, Hesitation, Cuts out, Stall, rotten egg smell VIN: 1124466T2P
to scott from wisconsin it was not the o2 sensor to gorge from ontaro it not the ing it hold pres dale from colordo was close it had a bad ground the status of the fix is the customor sold the car thank you to all__michael [...]
1990 Toyota Pickup 3.0L compressor VIN: JT4VH13G3L
Thanks for the help. Found a bad connection in harness to compressor. Also adjusted the amp box. System works good.
1991 Toyota MR2 2.2L starter VIN: JT2SW21N3M
Thanks to all who took time to reply,customer took car and was going to recheck the work he did before problem started,I have not heard any news yet.Thanks
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