Mechanics

SATURN VUE PRESSURE TEST PROBLEM

2006 Saturn Vue • 110,000 miles

4 cylinder engine will not go over 20mph. No codes. Replaced coil pac and ECM after dealer diagnostic. No change. Fuel pressure 58psi and throttle shows good response to gas pedal. Any ideas?
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Davidbrown1
March 21, 2013.




Is the reduced power light on?Also has a back pressure test been done on the exhaust?

Saturntech9
Mar 21, 2013.
Reduced power light not on and back pressure tests ok.
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Tiny
Davidbrown1
Mar 28, 2013.
So was a diyer scan tool used to check for codes?

Saturntech9
Mar 29, 2013.
Problem solved. The problem was the Accelerator Pedal Position (APP) module. I ran a resistance check and found an open in one of the circuits. Evidently the redundant circuitry kicks in and puts the car in a reduced power mode so you can limp to a service center.

Tiny
Davidbrown1
Mar 29, 2013.
Yeah that's why I asked if the reduced performance light was on and if you have codes.

Saturntech9
Mar 30, 2013.

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