4 CYLINDER ENGINE WILL NOT GO OVER 20MPH

2006 Saturn Vue

Tiny

davidbrown1

March, 21, 2013 AT 3:56 PM

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?

FOUND 1298 RELATED QUESTIONS

Cj7

41 ANSWERS
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5 Answers

Tiny

saturntech9

March, 21, 2013 AT 7:19 PM

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

Tiny

davidbrown1

March, 28, 2013 AT 5:15 PM

Reduced power light not on and back pressure tests ok.

Tiny

saturntech9

March, 29, 2013 AT 3:21 AM

So was a diyer scan tool used to check for codes?

Tiny

davidbrown1

March, 29, 2013 AT 1:31 PM

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

saturntech9

March, 30, 2013 AT 3:59 AM

Yeah that's why I asked if the reduced performance light was on and if you have codes.

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