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Old 04-24-2005, 06:56 PM   #10
BNaylor
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Re: Re: Trying to help a friend.. Your Thoughts. (Misfires after tune up)

Quote:
Originally Posted by TurboLS1Camaro
Oh yeah.. One more thing. When the tech filled the trans up with fluid, it was 4 1/2 quarts low on fluid for the test ride that intiated the miss. Could it have caused something to go haywire and be causing this miss?
Its possible, you never know but highly unlikely on the tranny issue.
There is over 80K on the Century, right? One last suggestion, hows the flow out of the exhaust. Is it consistent with engine rpms?

I worked on a friend's '01 Chevy Impala LS a few months ago with a similar issue. Missing was detected on all cylinders and the 4T65E tranny started acting up. Shifting weirdly especially under load or going up a hill.
No DTCs or SES light.

We found out that the CAT convertor was clogged once the engine was fully warmed up. Evidently it was still letting exhaust flow when cold.

After it was changed out everything went back to normal.



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