5.7l Tbi Acting Up In 95!

[jbbies]

Ok, I have a 1995 GMC 1500 with 135k miles. It has been running great since I purchased it 2 years ago. Although last week it started sputtering and dying only for a half second around the 1500 to 2200 rpm range. I have changed the distributer cap and rotor, Coil, and fuel filter and still no improvement. I ran a fuel pressure test on it and it is right at 13 psi. Now it only does this when I am driving, and seems to be worse when pulling a hill, I watch the tack drop a maybe 100 rpm and then picks right back up. Seems to run fine when I am fully into the gas and idles fine as well. Seems to be just during mid acceleration at that RPM range. Do you think I have an injector going bad? Could the fuel pump be going bad but just not showing it on the pressure test? What do you guys think.

 

Thanks for the help Im sure someone will help me figure this out.

 

Brandon

[Dank Xploidz]

I have the same exact truck, and mine has been doing the same exact thing for a month. I can't figure out what it is either.