Engine Performance problem
1995 Isuzu Rodeo Question 6 cyl Two Wheel Drive Automatic 155000 miles
I've been racking my head over this. I've replaced the O2, Fuel Pressure Regulator and IAC value. I've also swapped out the TPS and MAP sensors (then returned them as they didnt help). I'm currently putting new exhaust on from the manifold back (new cat and muffler inc). I've also replace most vacuum lines. The coils appear fine. Fuel pressure reads 33-36psi
If the new exhaust/cat doesn't fix it. What else could it be? Once I get over 3k RPM the engine is smooth and accellerates fine.
I would like to have some good ideas of what to check for next.
have the same problem?
Wednesday, July 8th, 2009 AT 11:08 AM