97' chevy 1500 4.3. p0306,p0131,p0174

Atx_rida · **Joined:** Sun Apr 06, 2008 2:07 pm **Posts:** 2

Have a 97' chevy 1500 with a 4.3 when cold runs great, when warm bogs down and won't drive over 35mph, 1500rpm. Can turn engine off restart and runs fine again for about 3 mile and then looses all torque. (ex. feels like catalytic converter is cloged) Please advise as to anything that i could try. have replaced maf,distributor,rotor,map,spark plugs,wires, cut cat and was fine. im stuck @ this point. Thank you :evil:

Sponsored Links · **Joined:** 29 Jun 2004 08:12 pm **Posts:** N/A

jeff compton · **Posted:** Sun Apr 06, 2008 2:48 pm

timing, egr, fuel pressure?

Atx_rida · **Joined:** Sun Apr 06, 2008 2:07 pm **Posts:** 2

egr "valve" location? runs straight to intake from bank 1 exsaust manifold.

jeff compton · **Posted:** Sun Apr 06, 2008 5:28 pm

Zoday · **Joined:** Sat Jun 21, 2008 1:03 am **Posts:** 1

I have a 96 GMC cierra that was doing what you described. I suspected fuel pressure. I changed the fuel filter. The situation got better,I was able to go faster, but I had to break down and change the fuel pump that was making so much noise I could hear it around the corner. She runs like a top now. Engine: 5.7 Vortec. Mileage 230000.

97' chevy 1500 4.3. p0306,p0131,p0174

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