dipapa
Enthusiast
Well i got part throttle issues.
Anyone had poor part throttle issue and know possible causes?
Its a lazy part throttle..noticeable car is dragging at part throttle at all rpm mostly in 3rd & 4th giving foot pedal 1-5inches of throw.
Laying into throttle slowly car aint pulling real strong... on part throttle acceleration, rpms going up, motor sounds loud but just a sluggish lagging feel.
Like something stuck in exhaust or cats are plugged. I dont have cats and exhaust flows fine.
so the part throttle is not a crisp, responsive feel like it should be. WOT dont feel too bad.
Couple Other symptoms but just an observation. I just think its all related.
I get iginition startup "hiccup". Motor cranks, then blanks out for a fraction of second and then starts up. kinda of a weak startup.. as soon as motor turns over it goes low rpms 300-400 for a few seconds then idle stabilizes to 700 rpm.
When rolling into a stop the rpms drop to 300-400 rpm for 5 seconds like motos about to stall, but doesnt then regains rpms to 700.
I have an SCT tune.
American Racing headers.
no cats
stock mufflers.
X Metal
Air/Fuel gauge bounces around from uper 13's to upper 15's.
Throttle cable is tight.
no codes.
Idle for most part is fine.
nothing unusual visually
All mechanicals are completely intact.
Biggest problem complant is the part throttle lagging feel. It *****. I got smoked by a few much less poweful cars.. that really hurt
Wondering if any one had part throttle issues or has a hunch at what it could be.
Can turning off long term fuel trims cause a poor part throttle?
Can not enough part throttle fuel enrichment cause this?
I'll be towing car to A&C Performance next week. Hopefully Todd can find something.
Latent Electrical Anomalies really ****.
I ordered a new PCM. I hope its that simple.
Anyone had poor part throttle issue and know possible causes?
Its a lazy part throttle..noticeable car is dragging at part throttle at all rpm mostly in 3rd & 4th giving foot pedal 1-5inches of throw.
Laying into throttle slowly car aint pulling real strong... on part throttle acceleration, rpms going up, motor sounds loud but just a sluggish lagging feel.
Like something stuck in exhaust or cats are plugged. I dont have cats and exhaust flows fine.
so the part throttle is not a crisp, responsive feel like it should be. WOT dont feel too bad.
Couple Other symptoms but just an observation. I just think its all related.
I get iginition startup "hiccup". Motor cranks, then blanks out for a fraction of second and then starts up. kinda of a weak startup.. as soon as motor turns over it goes low rpms 300-400 for a few seconds then idle stabilizes to 700 rpm.
When rolling into a stop the rpms drop to 300-400 rpm for 5 seconds like motos about to stall, but doesnt then regains rpms to 700.
I have an SCT tune.
American Racing headers.
no cats
stock mufflers.
X Metal
Air/Fuel gauge bounces around from uper 13's to upper 15's.
Throttle cable is tight.
no codes.
Idle for most part is fine.
nothing unusual visually
All mechanicals are completely intact.
Biggest problem complant is the part throttle lagging feel. It *****. I got smoked by a few much less poweful cars.. that really hurt
Wondering if any one had part throttle issues or has a hunch at what it could be.
Can turning off long term fuel trims cause a poor part throttle?
Can not enough part throttle fuel enrichment cause this?
I'll be towing car to A&C Performance next week. Hopefully Todd can find something.
Latent Electrical Anomalies really ****.
I ordered a new PCM. I hope its that simple.
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