7'sfalife

Ok here is the problem, I have an 86 GXL and only when its under load itacts like its being starved of fuel I mean it doesn'tbackfire are anything like that it just cuts out and it does this at any rpm. Sometimes i will drive just fine and others it will just stumble just for a second and then its ok again until I put it under load again. I have know clue as to whats goin on I have new plugs,wires,injectors what else could cause this! Please help this is my daily driver until I get my TII Back on the road. Any suggestions would be greatly appreciated!
Sorry for the spelling Im writing this on my lunch break!

AreExSeven

Had a tune up lately?

Change Air Filter, Fuel Filter.
Possibly dirty injectors.

I'd do the basics first, and if that doesn't fix it, then you can go on.

Rotary Racer

Here is a thought. Have you been getting worse gas milage as well? If so you might want to check your cats (might be cloged). Just a thought

7'sfalife

well I don't have any Cats and the injectors are new, fuel filter was replaced about 3,000 miles ago! Any other ideas!

7'sfalife

This is just a Guess but, would a bad ground have anything to do with this! My grounds are good as for as I can tell!

Skabidat

There is a little screw at the end of your fuel rail, under a plastic cap, see if that is loose. It can cause fuel pressure to be low.

7'sfalife

Sorry, just replaced the pulsation damper about a 1000 miles ago, but I will check again! Thanks

7'sfalife

What about the fuel pressure regulater?

StarionX

Ignition coils?
Are you getting any ecu codes?

HAILERS

Check and make sure the vacuum line to the pressure/boost sensor has a orifice in it.

Makenzie71

saprk plugs/wires

7'sfalife

I think I figured it out, I have been running a premix in my car because my OMP is disabled. I checked the screen on the fuel pump and it was all gunked up! I cleaned it and now it seems to be running fine! Thanks for the input Guys!