1991 Pontiac Grand Am 4 cyl Front Wheel Drive Automatic 90,000 miles
Hi, my grand am, when I start the car "normally" the check engine light comes on and the engie idles really slowly and heavily, ie the car rumbles and can shake for a minute, after idling for a minute the engine speed will level off and sound more normal however when I go to press on the gas pedal and drive off the engine hesetates and drives like a tank, there is clearly no power and the engine will heat up very quickly but won't overheat. Now I had the engine tuned up at my local midas, "level 2 service" according to the bill which they said should fix it. It worked for a week. They said whent hey scanned the computer they were getting a "long cranking code error" now whe I took it back tehy rescanned and said it was the same error and it was most likely becasue the car was old. This was about 1 year ago, Now I recently learned that if I crank the engine for a minute but don't allow it to start, then wait for the lights and stuff to shut off and then recrank the engine it starts very quickly with no check engine light. Also if I am driving and the check engine light came on at startup that if I get to 60km/h I can pull a fuse, top eft I think it's labelled ECM, wait 5 seconds while costing the engine sounds like it stalls the speedometer drops to zero and the check engine light flickers, once I plug it back in the engine starts running and everyhting comes back on and the engine runs wonderfully. Now I was wondering what is causing this, it's a new starter, new spark plugs(not sure about the spark plug wires) but what I can't figure out is why it does this, is it the computer? I bought a a reader, I turn the car to on but don't start it and the check engine light blinks out the codes that are stored, I get code 42 all the time and once and a while code 33, right now that one isn't there jsut 42. Thanks for any help!
have the same problem?
Saturday, May 30th, 2009 AT 7:24 PM