slight stumble

[DaLe five OH!]

when i'm in the 50-55 range and i shift into OD and i SLIGHTLY give it gas, it stumbles ever so slightly...its never done this before...it hasnt effected anything else, but its annoying...if i'm goin 50-55 and keep it out of OD(i have a shift kit) and its hovering around 1800-2000rpm it doesnt do this...any ideas guys?

[DaLe five OH!]

need help guys...

[USMC302]

Fuel filter change. Just for starters....

Honestly I'm not that proficient with Auto's but maybe your convertor is going out....?

When was the last tune up?

[DaLe five OH!]

changed the fuel filter, last tune up was at (did it what i got the car)96,000...i'm at 112,900 now...its not doing it as bad as it was before...i think i just had a clogged injector...

[Unit 5302]

Originally Posted by DaLe five OH!

changed the fuel filter, last tune up was at (did it what i got the car)96,000...i'm at 112,900 now...its not doing it as bad as it was before...i think i just had a clogged injector...

Injector issues are more likely to present themselves while the engine is cold from my experience. They're also often accompanied by a slight backfire. If the injector got "clogged" it's not something that generally just works itself out.

The issue you're describing could be any number of things including worn ignition system components, fuel system components or even a MAF malfunction.

Start with the basics.

Does the problem happen when cold or after driving for a while? You indicated the problem only surfaces at low rpms under a slight load so that makes me feel you should take a peek at the easy stuff like distributor cap & rotor, spark plugs, and the spark plug wires. For about the same price as having the injectors cleaned, you can purchase the schraeder value connection kit and a can of real injector cleaner and give you injectors a proper cleaning.

[USMC302]

That *ucking Beautiful coupe has 113k miles???!!!!!!!! Wow, it looks amazing Dale!!! Good looking coupe.

Have you tried pulling codes, maybe eliminate a bad sensor or o2 somewhere.....

[DaLe five OH!]

Originally Posted by Unit 5302

Injector issues are more likely to present themselves while the engine is cold from my experience. They're also often accompanied by a slight backfire. If the injector got "clogged" it's not something that generally just works itself out.

The issue you're describing could be any number of things including worn ignition system components, fuel system components or even a MAF malfunction.

Start with the basics.

Does the problem happen when cold or after driving for a while? You indicated the problem only surfaces at low rpms under a slight load so that makes me feel you should take a peek at the easy stuff like distributor cap & rotor, spark plugs, and the spark plug wires. For about the same price as having the injectors cleaned, you can purchase the schraeder value connection kit and a can of real injector cleaner and give you injectors a proper cleaning.

it happens after driving a while, and when i have the a/c on...i know its not when the compressor kicks on because it has a different feel and i can hear the compressor kick on, the cap and rotor,plugs,wires,
and igniton coil are all "new" and from msd...i'll go by the parts store when i get a chance and get the schraeder valve connector and the cleaner and try that...and yes usmc302, its a respray but the guy did a great job...