Engine Performance problem
1998 GMC Suburban V8 Two Wheel Drive Automatic 239K miles (engine has 120K)
Here's what's been replaced or checked ok:
2 cats; 4 o2 sensors, muffler, fuel filter, air filter, expensive wires, plugs, cap rotor, pcv, fuel psi regulator, fuel pump, throttle position sensor, high quality gas (always used); regular gas treatment (lucas oil or sea foam); timing, fuel pump psi = 60 and holds, no vacuum leaks, cam position retard setting is good. NO CHECK ENGINE LIGHT, trans was rebuild in Dec. 2009 (still under warranty)
I've had 3 professional shops look at it and no one can give me a definite answer without ripping out my pockets. You're welcome to give me your.02 worth. Thanks.
I would donate with this question, but please review my current status. I just gave my last $426.00 to two certified mechanics today. Sorry. Better let this question entertain all the viewers. If you really care to help, please email me at jbatpbc@sbcglobal. Net.
Saturday, May 8th, 2010 AT 12:10 AM