i mean camshaft position failure sensor

i have had a few problems with this stilo 1.2 16v. the code reader is giving p0340 camshaft position sensor. fiat say that this engine doesnt have a camshaft position sensor, but it does have a phase sensor. so i changed the phase sensor and i still have the mangement light on and the same fault from the code reader. the engine runs fine.

occasionally i get an o2 sensor fault on my obdii scanner

the faults i am getting are

1. car revs up on start up on its own through to 6krpm then stalls , this happens occasionally
2. engine fault light comes on everytime i start it


i disconnected the battery after fitting the phase sensor to try and clear the ecu, i reconnected it 24 hours later and the engine fault light came on straight away. the car drives perfect and the engine runs smooth.

any ideas before i set fire to it!

Revs shooting to 6k revs sound very much like the TPS or related problems [throttle body ]..I am also reading that you disconnected the battery to clear the codes on the ecu when you need to leave it connected to do this ..disconnecting the battery only resets the ecu to its original peramiters.. [usually] but this doesnt always work..what is the code you are getting on the lambda sensor..? if you are still getting the same code from the phase/cam sensor then there is still a problem some where check condition of all wiring and connectors clean connectors if need be with contact cleaner..other than this I cant suggest anything else..

I have reset the code p0340 using my obdii scanner. The code stays clear when you turn the ignition to position 2. then when you start the car the p0340 code pops up again straight away. i have cleaned all the contacts and plugs with contact cleaner. I am suspecting it is the crank sensor as evidently this can cause the p0340 code aswell as its not in sync with the square wave from the cam sensor. the only other thing i can think is that the belt is slighty out on the timing and this would trigger this fault aswell maybe?

is there a way of adjusting the cam belt without moving a tooth on the pully as i am thinking it could be just a bit out causing the sensor to pick up the fault out of sync. the car doesnt seem that fast on acceleration, i know its only a 1.2 but it seems to take forever to get to 60mph. well over 10 seconds.

i cant remember the code from the lambda sensor but it said o2 sensor A bank 1. but that code has been cleared and hasn't come back.

Originally Posted by PNL

Revs shooting to 6k revs sound very much like the TPS or related problems [throttle body ]..I am also reading that you disconnected the battery to clear the codes on the ecu when you need to leave it connected to do this ..disconnecting the battery only resets the ecu to its original peramiters.. [usually] but this doesnt always work..what is the code you are getting on the lambda sensor..? if you are still getting the same code from the phase/cam sensor then there is still a problem some where check condition of all wiring and connectors clean connectors if need be with contact cleaner..other than this I cant suggest anything else..

Originally Posted by mattfiat

I have reset the code p0340 using my obdii scanner. The code stays clear when you turn the ignition to position 2. then when you start the car the p0340 code pops up again straight away. i have cleaned all the contacts and plugs with contact cleaner. I am suspecting it is the crank sensor as evidently this can cause the p0340 code aswell as its not in sync with the square wave from the cam sensor. the only other thing i can think is that the belt is slighty out on the timing and this would trigger this fault aswell maybe?

is there a way of adjusting the cam belt without moving a tooth on the pully as i am thinking it could be just a bit out causing the sensor to pick up the fault out of sync. the car doesnt seem that fast on acceleration, i know its only a 1.2 but it seems to take forever to get to 60mph. well over 10 seconds.

i cant remember the code from the lambda sensor but it said o2 sensor A bank 1. but that code has been cleared and hasn't come back.

Crank sensors normally give you persitant starting problems have you had any of that..if you suspect it then its an easy change and would I suppose rule it out at least..with regards to the shifting the cam belt then NO there is not a way to shift the belt without retimeing the engine and for that you need cam locking tools to hold the cam on the correct possition..pstons on the 1.2 must all be inline and not No1 at top dead centre..

http://www.tooled-up.com/Artwork/Pro...AINSvs1400.pdf

Anyone help me?

I confirm.
After setting camshaft timing everything is ok!