Its a 97 vortec 454 w/ 4l80. Cleaned throttle, cleaned maf w/ maf cleaner, new iac, new ect sensor, new downstream O2 sensor. All stock as far as I know. Rebuilt engine and reman trans both with 5k on them.I would exhaust everything first, then if nothing was found move to the motor..
Does this truck have a ecm? Any tunes in it? electronic injected or carb?
I read through some of the thread but not all of it...
If I end up pulling spark plugs I'll check compression. What numbers should I see?Yeah, i need to go back and reread it. Something is WAY off.
That weak, and a new-to-you truck, i would start with a compression test. Then hook up
A vacuum gauge to the manifold and do that check- do you know what to watch for?
If those two aren’t right- the fueling cant be right no matter what system.
No codes. Its all electric on the 4l80 and it shifts nice.Well I'm not really a gas person but would be curious as to what cam it has.
Is their a TV type of cable controlling the tranny? I also only do manual trannys and don't know much about autos LOL...
I'm more of a carb person..
Me thinks Ferm would be the one to know better..