So every once in a while I get this code p0171 as soon as light comes in engine idle revs to 950-1000 if I clear code in torque engine idle drops instantly to normal 600 or so.
I though vacuum leak checked around. The cap on the plastic intake manifold box thing as cracked replaced it and hose from fuel pressure regulator cracked replaced it
Still it pops up. Sometimes I get the high idle with no code etc.
Nothing I do reproduces it nothing else seems different besides harder to stop due to high idle.
Any suggestions Thanks In Advance
I though vacuum leak checked around. The cap on the plastic intake manifold box thing as cracked replaced it and hose from fuel pressure regulator cracked replaced it
Still it pops up. Sometimes I get the high idle with no code etc.
Nothing I do reproduces it nothing else seems different besides harder to stop due to high idle.
Any suggestions Thanks In Advance