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Prev Professional Automotive Repair Technical Discussions for June 19, 2004
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Open Help Requests for GM
Help Request Answers
1995 Cadillac DeVille 4.9L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Poor Fuel Economy VIN: 1G6KD52BXS
Thank You in advance to all that reply. This caddy came in with a bad hesitation sometimes and running very rich. The o2 sensors were fixed rich and would not respond to propane or vacum leak. The injector on time at hot idle was about 5.3-6.0 ms. The LTFT was... Trouble codes: P0052
1996 Chevrolet S10 LS 2.2L Poor Idle Quality VIN: 1GCCS194XT
mil 0172 does come on,followed repair flow charts from alldata with no luck. fuel trim index is -51.8, load 48% components tested: o2, map sensor, iac, injectors, plugs, coils.smoke leak check also comes out fine. whenever cyl 4 is grounded out, the idle impro... Trouble codes: 0172 (fuel trim system rich)
1996 Chevrolet S10 2.2L volt meter VIN: 1GCCS1449T
Hello everybody hope you can help me with this one. Alternator originaly repllace 11-2003, had stopped charging,light on. shortly there after at speed on highway voltage would start to drop intermentently, engine starts missing ang signals slowed down. Pulled ...
2000 Chevrolet Malibu 3.1L Hesitation VIN: IG1ND52J5Y
Help: No codes. starts, idles perfect. When hot "only some times". Slow acceleration, freeway driving, going up a grade NO POWER, even if floored {passing gear} feel,like, low fuel pressuer. Unbolted catalytic converter, still the same condition. Car never ha...
1995 Pontiac Grand Am SE 3.1L no shift VIN: 1G2NE55M7S
car starts out in fourth gear, will not downshift any time by itself .When you start out in selector range 2 vehicle will start in second and will shift to 3rd when manually upshifted, same with fourth.mt2500 reads solenoids are set for fourth gear .
1992 Saturn SL1 1.9L Clutch Hyds. VIN: 1G8ZG5493N
Have replaced the leaking Master cly. and fitted a new slave cylinder which has no bleed nipple. Have bled the slave by filling with fluid and expelling air, have bled the master cylinder, have pushed the slave push rod fully in whilst connected to the hyd. li...

Fixes & Summaries for GM
Fix/Summary Answers
1992 Buick Park Avenue 3.8L anti-theft VIN: 1G4CW53L6N
Sorry for the delay, I went on vaccation the day this car was fixed. I had traced it down to the decoder and I tried to post an update when everyone started telling me to ck the key and cylinder but it did not go thru. The cylinder was the first thing that I c...
1963 Chevrolet CORVETTE 327CID oil filter gasket VIN: 30837G1159
At this time I have received 47 replys.Almost all were correct.The oil pressure relief valve was frozen solid in the oil pump.Some techs responded that the relief was in the adapter plate,this is in fact the bypass for a clogged oil filter so that oil will sti...
1991 Chevrolet Corsica LT 2.2L No Start VIN: 1G1LT53G9M
Well I would like to start by saying thank you to the following; Laneard,Keith,Medardo,Phil,Greg,John and Frank. I need to say thank you for two things first their patience, our customer was slow to want to say that everything is O.K. Sometimes that happens, I...
1985 Oldsmobile 98 Regency Brougham 3.8L Poor Idle Quality, Hesitation, Misfire VIN: 1G3CW6938F
Thank you for the help guys. Rodney [...] hit the nail on the head. Thank you! This one is fixed. It turned out to be a two part problem, both related to the secondary ignition. It had two posts on the distributor cap that were coroded, and one defective spar...
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