2000 Oldsmobile Alero Engine problem

Tiny
NITHI
  • MEMBER
  • 2000 OLDSMOBILE ALERO
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 192,000 MILES
I have an MY2000 Olds Alero It ran perfect until the last weekend started to miss very bad with white smoke coming from the exhaust!

The Service Engine Soon light & Traction Off came on!

It reads the following codes:

P0204 - Injector 4 control circuit Malfunction
P0304 - Cylinder 4 Misfire Detected
P0621- Generator L- Terminal Circuit

I changed the fuel rail with 4 injectors, 4 Spark Plaques with the 2 coil pack and still have the exact same problem!

The engine still has plenty of power even with the misfire but it blows a big cloud of white smoke!
No water mixing with oil or engine overheating!

Please help?
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Saturday, January 5th, 2008 AT 8:07 PM

2 Replies

Tiny
GRICKWAR
  • MEMBER
I have a 1999 oldsmobile Alero and I am experiencing the same symptons with my Aero as nithi (posted Jan 05,2008 6:07 pm).
P0301 - Cylinder 1 Misfire Detected in my case.
The Service Engine Soon light & Traction Off came on also.
I changed the fuel filter, spark plugs and spark plug connectors to the Coil Pack.
This has not fixed my problem.
This only happens sometimes when my car is first started or sometimes if the car has been left for around 1/2 hour or so. This morning my garage filled up with white smoke and after putting the throttle to the floor three times it was running smooth.
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Monday, January 7th, 2008 AT 9:20 AM
Tiny
GRICKWAR
  • MEMBER
HI Nithi,
I hope that the Motor is still functioning in your Alero.
I took mine into a local rad shop to test for emisions in the antifreeze. After the test they informed me that there was indeed emisions in my antifreeze and that they agreed that my head gasket was gone.
I tore the engine down and found piston #1 as shiny as new. I purchased a new complete gasket kit (very expensive). I got the car back on the road this weekend and it now runs excellent.
This is a very big job and very labor intensive.
My local automotive supply tecnician told me to put iron tight in the antifreeze and sell it and not to tear it down because of it being a very big job.
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Monday, January 21st, 2008 AT 9:46 AM

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