ENGINE REVS FAR PAST 5K UNDER HEAVY LOAD AND ...

2003 Saturn L300

Tiny

brettcarter

November, 7, 2012 AT 10:19 PM

Engine revs far past 5k under heavy load and will not shift until slight letoff on gas pedal no codes new maf sensor, new transmission, had fuel tested and is good no misfires good fuel pressure and volume what have I missed?

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3 Answers

Tiny

saturntech9

November, 7, 2012 AT 10:28 PM

I would do a back pressure test sounds like a plugged cat let me know what you find.

Tiny

brettcarter

November, 7, 2012 AT 10:56 PM

Both cats have less than 1 psi back pressure 5k rpm

Tiny

saturntech9

November, 12, 2012 AT 4:38 PM

So the test was done at both exhaust manifolds attached to the heads?

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