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Prev Professional Automotive Repair Technical Discussions for September 13, 2004
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1995 Cadillac DeVille Concours 4.6L Poor Idle Quality, Cuts out, Stall VIN: 1G6KF52YXS
This Caddy is getting me furious. I got this beast after another tech spent two weeks on it, and has now since quit here. So now I have the luxury of working on it. This is what has been happening so far, prior to me working on car, although all work is sketch...
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1999 Cadillac Escalade 5.7L abs ? VIN: 1GYEK13R7X
low brake peddle had put on new front & rear brakes rotors $drums master cyl bleed brakes still low brake peddle
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1993 Chevrolet Caprice Classic LS 5.0L temp sender VIN: 1G1BN53E7P
hi guys have this car with a temp gauge goes up to the red then back down to a 1/4.going down the road or in the shop.it has all of cooling sys.kinda new 2 years/30,000 miles .it started 2 weeks ago.put a new stat. in no change.ck.gauge with tester pass. 55ohm...
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1995 Chevrolet K1500 Cheyenne 5.7L Misfire, BACKFIRE VIN: 1GCEK19K8S
vehicle will backfire after deceleration and apon trying to reaccelerate as if to slow for a turn, only pulling a camper. the backfire is so loud it sounds like a gun going off. you can coax it up to speed slowly with it backfiring until you get over 50 mph, e...
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1997 Chevrolet C2500 5.7L gauges(fuel, charge,oil, temp.,odometer and tacho VIN: 1GCEC34K3V
Hello everyone, I received this vehicle with the problem in the gauges. When you start and run the vehicle at the idle speed, the gauges that control temperature, charge, oil,odometer,tachometer start to oscilate . First I messure the voltage without any acces...
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1998 Chevrolet K1500 Cheyenne 4.3L Surge, Misfire VIN: 1GCEK14W1X
This vehicle has a misfire/buck only at 1800-2500 RPM in any gear. TPS range is around 10% or less at the specified RPM. Continuos code setting of PO300. Also noted during road test that cylinders 3 & 4 are the more dominant failures. 5 mile road test will mis... Trouble codes: P0300
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2001 Chevrolet Silverado 2500 6.0L gauges and cluster VIN: 1GCHK29U91
hello all. this pick up is part of my fleet. the driver started to complain a month or so ago about the gauges dropping out while he was driving. i have driven the truck and it happened once on me. while your driving the fuel, rpm, speedo and trans temp will d...
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2002 Chevrolet Trailblazer LS 4.2L No Start VIN: 1GNDT13S92
Vehicle would turn over but not start for customer. They cranked over for so long the battery was completely dead. With booster attached we could hear fuel pump run so we checked fuel pressure. Fuel pressure was about 10-15 psi, replace fuel pump, still won't ... Trouble codes: 1523 (elec. throttle cntrl throttle return), 1515 (elec throttle sys vs throttle pos), 1516 (elec throttle mod vs throttle pos)
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1994 Oldsmobile 88 Royale 3.8L fuel pump VIN: 1G3HN52L9R
Intermittent problem with this one, out of the blue the car will not start, hot or cold; starter motor turns engine over 100% but no fuel pump. The funny catch is when the vehicle won't start, the power seat & power windows also will not work; cannot find a li...
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1996 Pontiac Grand Am SE 3.1L No Start VIN: 1G2NE52M2T
HEY ALL.. tHIS ONE SHOULD BE A NO BRAINER BUT IT ISN'T. THIS CAR CAME IN OFF A HOOK. COMPRESSION TESTS SHOWS NOTHING OUT OF THE ORDINARY.FUEL PRESSURE IS 41PSI HAVE STRONG SPARK AT ALL PLUGS.NO OBSTRUTION IN AIR INTAKE. THE ONLY THING OUT OF THE ORDINARY IS I...
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1998 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NE52T8W
After repairs ran 500 miles. Towed back in with code 1629 crank signal incorrect and 1631 password incorrect. Tested wiring from IPC to lock clynder 0.50 ohms on all wires. 5 volt reference good, have 10.57 volts on battery voltage wire to lock clynder, ground... Trouble codes: P1629 (Theft crank signal malfunction)
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Fixes & Summaries for GM
Fix/Summary Answers
1998 Cadillac DeVille 4.6L cylinder head gasket VIN: 1G6KD54Y8W
Good Morning, Got several replies most indicated removal of engine from car was required to reseal the cylinder heads and install head bolt inserts. Some said trying to repair the overheat damage would be a waste of time. We pressure tested the engine to deter...
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1979 Chevrolet LUV 1.8L voltage regulator VIN: CLN1498297
Armed with the wiring diagrams several people sent me, we tackled this truck. We found several wires from the turn signal switch were shorted together. In the process of repairing these wires I noticed that the wire from the regulator to the charge light was m...
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1984 Chevrolet C10 Scottsdale 5.0L no drive or rev VIN: 2GCEC14H7E
Thanks to all that replied, most of you were pointing at the conv. I was not aware of the design change in stator splines.but sure enough that was it, Thank You
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1991 Chevrolet Lumina Euro 3.1L Stall, Misfire VIN: 2G1WN54TXM
Thanks to everyone who replied...rec'd 21 replies. The problem was three bad injectors. I pulled the injectors and had them tested at operating temp, also had them flow tested. One was intermittently going dead, and two others went way out of ohm spec at opera...
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1993 Chevrolet 34 FT MOTHOM 454CID brake, steering VIN: 1GBKP37N8P
finally got this hydroboost system to work a few of ya hit it right on the nose ,bleed the air out, it took longer to bleed the system than to do the to install the hydroboost unit .thank's to all who reply'd. mick [...]
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1996 Chevrolet K1500 4.3L No Start
well after wasting lots of time and new parts at my expense we finally did a proper/flow charted diagnosis ( which the tech said he did the first time vehicle came in) we found a wire on the vehcle side of harness to o2 just ahead of catalyst pulled back sligh... Trouble codes: 154 (bank 2 sensor 1 fault), 175 (rich in history).
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1998 Chevrolet K1500 Cheyenne 5.7L exh flange failure VIN: 1GCEK14R9W
thanks for your help, I removed both exhaust pipe and bank2 flange was smaller in diameter than bank1, we send to a different moffler shop and they double flange the exhaust pipe and replaced from catalic converter to exhaust manifold. reseted check engine l... Trouble codes: P0160 (low [...] act. Bank2 Sensor 2), P0174 (fuel system lean bank two).
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1999 Oldsmobile Intrigue GL 3.5L Oil Pressure VIN: 1G3WS52H9X
Thanks for the replies. This technological wonder is fixed! Upon exploratory surgery we removed the oil pan & found the oil pan gasket had 'slipped' where it is suppose to seal around the oil filter to block area causing internal leakage.(Oil Filter is part of...
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1996 Pontiac Firebird 5.7L MIL Lamp on VIN: 2G3FV22PXT
Well it's been a week and the light has not come.I got 4 replies to check the lines for debris,vacum switch and check the wiring.I ended replacing the vacum switch,even though it tested ok.Thank you for the replies. Trouble codes: 0441 (Evap systemno flow during purge).
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1999 Pontiac Montana 3.4L Poor Idle Quality VIN: 1GMDX03E4X
we replaced the pcm for the 3rd time with another remanufactured unit. the customer has been driving the vehicle for one week, with no idle problems.
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