OP was way down on the list so I started a new thread for your issues!
Well, the vacuum could have been contributing to your problem. This thread
has been going on for so long now I forget what you've done thus far.
1. Complete tune up. Plugs, wires, cap and rotor?
2. Had the ICM checked yet?
3. Scanned for codes lately?
4. Replaced 02 if older than 5 years or 75k miles?
5. Recheck timing, should be 0* or TDC. Bump it up to 4* BTDC and see if
P.S. This thread is way down on the list. I'd start a new thread when you
reply to this message. Ahhhh hell, I'll do it for ya!
thats what the owner wants to do. he is wondering if it is an aftermarket
chip because the intake is a Edelbrock performer tbi. Said the hesitation
(what i called lugging) is around 1200 rpm. high hydrocarbons, too
YEP-UNIT FROM NAPA
yep . >
Going to drop it off at this shop one more time. Actually running worse on
low throttle applications. Stalling out on me when gently moving or backing
up. have to 'goose' it. seems to run somewhat better when gitin' on the
freeway. Think its backfiring - hearing a loud 'pop' sound when at part
throttle cruise, unsure from where, sounds like underneath by cat. hopin'
this guy could square me away since it is a smog check shop. if not, well, i
guess i will have to try a third place. thanks again for all your advice. i
am not surprised that it is right on.
well, i have not had a chance to bump the timing up yet. i would like to
hope that it is something simple like the fuel pressure regulator. i have
replaced the ICM with a new GM unit about 3 weeks ago. i am busy wit' school
and work, so i am gonna try one more time with these fellas.... we will see.
i am going to mention to him what you told me about the hydrocarbons ...
sunofagun, it shouldnt be this hard, should it?!
Well, i am embarrassed.
It was the damn egr valve. telling the computer that it was WOT when it
wasnt. Runs like a top now.
you were pretty much dead on.
thanks for your advice, Doc, i am keeping these post as a reminder for my
ignorant ass in the future
have a good one!
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