my friends blazer (1997) loses power when you step on the gass when it should shift into the passing gear instead it just bogs right out and slows down it dosnt stutter or threaten to stall it just feels like your trying to go up a huge hill towing like 6 other cars lol.... any thoughts guys. if you excel slow it seems fine but once you step on it and the tach hits 3 grand is when it happens

Thanks guys

 

Tape a fuel pressure gauge to the windshield and go drive it to check the fuel pressure. Could be a clogged filter or a failing pump. Bad cat converter. When was the last tune up? Is there a check engine light? Scan for codes.

 

no codes and no engine light sorry hasnt had much of a tune up for a while im going to dig into somethigns tomorow when he comes over looking for some ideas of what to check, dont have a fuel presure gauge unfortunatly...

 

well we just tryed to start it and it idles up and down now and bogs out as soon as you touch the gas and you can hear the fule pump so thats what its is thanks guys, but i just called a parst store and they want 550 bucks for one....

 

Pull the pre-cat O2 sensor (the one directly ahead of the catalytic converter) and see if the symptoms persist. If things get better with the O2 sensor out, your catalytic converter is clogged.

 

I would try to rent or buy a fuel pressure guage and check the pressure before changing out a perfectly good fuel pump.