1995 Cevy S10 pickup 2x4 with a 2.2L. And 174,000 miles. Used fuel tank, sending unit and pump from salvage yard were installed. Would run but had no power on take off/acceleration. Installed new fuel pump and it ran great for 2 months then it just lost power during ride home from work. Replaced fuel pump again with no results. Replaced both ignition coil packs and fuel filter, still no results. TPS is working fine. Not sure about fuel pressure regulator-and there is no port to check fuel pressure.
THANKS FOR ANY HELP RENDERED!
Hmmm. Does this prob happen when the engine is cold or only after it warms up/been running for 5 mins or more? Could possibly be a bad IC module. If happens after a few mins of running. Sounds like the same thing on my S-10. No power/stumbling on its face at full throtle, then all sudden run like a rapped ape. Replaced the IC and took care of the problem. Only way to check fuel pressure is to make a connection after the fuel filter with a homemade device that has the proper fittings for the lines and the gauge.