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Car Forum / Oldsmobile Cars / August 200692 cutlass v6 3300 no acceleration
Hi all. I have a 92 Cutlass Ciera S with a 3.3 V6. When it is in park, I hit the accelerator and the engine bogs down. The sound is coming from the air intake. When I go out and drive acceleraton is very poor. At full throttle my tranny switches a gear down (overdrive?) and the car barely makes it to 30MPH. I went and replaced the spark plugs, oil, oil filter, air filter, checked the injectors, fuel filter, intake temp sensor (looks good), new plug wires, and the oxygen sensor is fairly new. All my intake sensors are fully plugged in and uncorroded. I do not have a check engine light on after 3 days. The problem started all of a sudden and got severe in a matter of 20~ miles. I have mixed grades 83, 87, 93 over the last few tanks of gas with injector cleaner and octane booster. The engine idles fine but quick throttle makes the engine almost die and make a low bog sound from the air intake like its gasping for air and continues throughout the powerband in drive and neutral. The exaust is clean and unclogged, catalytic converter is clean. Too rich, too lean, bad fuel, or a engine problem? Thanks BTW, the problem started before anything was replaced and continued after maitence. First get a fuel pressure gage on it and check the pressure if ok, about 35-40, suspect the cat. > Hi all. I have a 92 Cutlass Ciera S with a 3.3 V6. > When it is in park, I hit the accelerator and the engine bogs down. The [quoted text clipped - 19 lines] > BTW, the problem started before anything was replaced and continued > after maitence. ok cat. converter is not the issue, the engine runs the same with no exaust hooked up. havent tested fuel pump yet. the engine runs almost normal right after startup and gets majorly worse after engine warms. the engine will not go over 15MPH at operating temps. I thought someone could of added something to my gas but I diluted it and no better. I changed the fuel filter also. Eats gas like a mofo. Any ideas guys? > First get a fuel pressure gage on it and check the pressure if ok, about > 35-40, suspect the cat. [quoted text clipped - 25 lines] > http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups > ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- If this where not a computer-controlled engine my first thought would be severly retarded timing, which brings me to this idea . . . Off the wall idea - possible cam has slipped a tooth and the valve timing is running badly retarded? That would sure cause the engine to have damn little power. The clue I'm hanging this on is the fact that it happened all of a sudden with no obvious external cause and no "Check Engine" light. BTW, how many miles on this car and is the timing set (gears and chain) original? Before I'd jump into the engine, I'd have the fuel system pressure checked (and don't forget to check the vacuum hoses for leaks as well, especially the one to the fuel pressure regulator). Regards, Bill Bowen Sacramento, CA >ok cat. converter is not the issue, the engine runs the same with no >exaust hooked up. havent tested fuel pump yet. the engine runs almost [quoted text clipped - 33 lines] >> http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups >> ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- It has 107k miles and it is orginal. When I loosen the exaust manifold the engine runs much better from time to time, I'm thinking the exaust is clogged. I will however check the fuel pump but its leaning towards the cat. converter. Maybe someone put something up my exaust? I'll go ahead and check vac hoses and such, thanks for the idea! > If this where not a computer-controlled engine my first thought > would be severly retarded timing, which brings me to this idea . . . [quoted text clipped - 53 lines] > >> http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups > >> ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- I thought you said the cat was ok, ran bad with no exhaust? Again get a gage on the FP. > It has 107k miles and it is orginal. When I loosen the exaust manifold > the engine runs much better from time to time, I'm thinking the exaust [quoted text clipped - 67 lines] >> >> ----= East and West-Coast Server Farms - Total Privacy via Encryption >> >> =---- No it ran good with no exaust. I took it up to the shop and they cut the cat and the ceramics are all fed up. Car runs like new w.o cat, they are putting a new one on for $125 with tax. Thanks guys. > I thought you said the cat was ok, ran bad with no exhaust? Again get a gage > on the FP. [quoted text clipped - 73 lines] > http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups > ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- Ok got it, cars fixed, great. > No it ran good with no exaust. > I took it up to the shop and they cut the cat and the ceramics are all [quoted text clipped - 93 lines] >> ----= East and West-Coast Server Farms - Total Privacy via Encryption >> =---- |
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