Evening all.
There is a fair amount of info. to give you I hope bullet points will make it easier.
FAULT SYMPTOMS:
- When idling and warmed, revs rise to 1500 and hold there. No further accelerator control.
- TPMS warning, ESC warning and Hill-Hold warning happen at the same time.
- TPMS valves were not fitted and are still not since we had the car in 2018 at 3.5 years old.
- Car drives fine at these fixed revs until...
- Switching off cures the problem until the next idle but ECU light remains on.
- ECU light goes off after the car has 24 hours of sitting and doing nothing.
- MAP Sensor fault confirmed with Pxxxx code by AA and another garage. Swapping MAP cured the problem all summer last year until today.
- Evidence of oil/water in breather pipe but no blockages. MAP sensor has a very slight sign of oil.
- Confirmed no HGF with pressure and chemical sniff test.
- No coolant loss.
- MAP connections all good. Loom good.
- Oil clean.
- Car does 10m on a dual carriage way to work and back each day.
I have read here there was a Fiat ECU update to reduce occurrences of fault like this but the rev. issue seems unique.
What about the idle valve is there is still one fitted to this age of car?
Ideas? Thoughts? The car has only done 27K miles.
A.
There is a fair amount of info. to give you I hope bullet points will make it easier.
FAULT SYMPTOMS:
- When idling and warmed, revs rise to 1500 and hold there. No further accelerator control.
- TPMS warning, ESC warning and Hill-Hold warning happen at the same time.
- TPMS valves were not fitted and are still not since we had the car in 2018 at 3.5 years old.
- Car drives fine at these fixed revs until...
- Switching off cures the problem until the next idle but ECU light remains on.
- ECU light goes off after the car has 24 hours of sitting and doing nothing.
- MAP Sensor fault confirmed with Pxxxx code by AA and another garage. Swapping MAP cured the problem all summer last year until today.
- Evidence of oil/water in breather pipe but no blockages. MAP sensor has a very slight sign of oil.
- Confirmed no HGF with pressure and chemical sniff test.
- No coolant loss.
- MAP connections all good. Loom good.
- Oil clean.
- Car does 10m on a dual carriage way to work and back each day.
I have read here there was a Fiat ECU update to reduce occurrences of fault like this but the rev. issue seems unique.
What about the idle valve is there is still one fitted to this age of car?
Ideas? Thoughts? The car has only done 27K miles.
A.