Took my car back to my mechanic and he said that he thought the lack of power could have been an o2 sensor or a clogged cat but i changed both and its still doing it. Ive noticed its fine for the first few pulls in the morning when i first drive it , but as it warms up then it turns gutless... any ideas? I feel like ive tried everything and now its just starting to make me angry.

 

Thanks an advance.

 

-Tanner

 

93 loyale 4wd 5 speed

I feel like ive tried everything

Hmmm... not much left if everything has been tried.

 

running poorly is possible from many things. how about:

Poor air flow

poor spark

poor compression

pcv clogged

Any CEL codes ?

Timing off

Hmmm... not much left if everything has been tried.

 

running poorly is possible from many things. how about:

Poor air flow

poor spark

poor compression

pcv clogged

Any CEL codes ?

Timing off

Not running poorly, runs great. Just has no power under throttle after it warms up.

Lots of things might do that. CTS?

Did you replace / check both catalytic s?

Although, I can't day I've seen one change over temperature - if it's blocked, it should be blocked.

 

But almost anything electric, / electronic can developed failure modes sensitive to heat / temperature. This means anything in the ignition circuits, engine control system, etc is suspect.

 

T in a fuel pressure gauge, so it can be viewed while the malfunction happens.