Mechanics

LW300 WILL NOT ACCELERATE, DIES

2002 Saturn Other • 6 cylinder FWD Automatic • 130 miles

No imediate DTCs. Eventualy throws Trans Control Module requested MIL after several start/run cycles. Pending DTC: VSS A circuit low voltage. Engine will not accelerate and eventually dies if the throttle is depressed and held. Rough idle. Rolling engine with throttle depressed, but does not roll at idle. MAF checks good with scanner. No vacuum leaks found. Fuel pressure is good and steady. Engine starts imediatley. CPS replaced 6 months ago. Thanks!
Avatar
Jetwrnch
April 29, 2011.



I need the exact code numbers not the code descriptions?Have you had the exhaust back pressure tested yet?

Saturntech9
Apr 29, 2011.
The catalytic converter is clogged. Vacuum read 5-7hg at idle. I disconnected the exhaust at the manifold and the engine ran fine. Thanks for the timely and accurate reply!

Tiny
Jetwrnch
Apr 30, 2011.
Your welcome that's what were here for let me know if you have anymore questions.

Saturntech9
Apr 30, 2011.