Rough idle ford Puma scan results - advice please?
Rough idle ford Puma scan results - advice please?
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paulyv

Original Poster:

1,067 posts

146 months

Wednesday 10th July 2019
quotequote all
Morning - hope you are well. Not posted in a while as the Puma has been fine.

Over the past few weeks it has been stalling when pulling up to lights and running rough when idling. I have changed:

MAF sensor
Idle Control Valve
Throttle position sensor

No joy so have had it scanned. The following errors have come up:

>>>>

PO460:
Invalid fuel tank message from cluster

PO122:
Throttle Position Sensor low

P1381:
Variable Cam timing overadvanced, Bank A

I am told these are the possible causes of this last error code

Cam timing improperly set
No oil flow to piston chamber
Low oil Pressure
Solenoid valve stuck closed
Camshaft advance mechanism binding

>>>>

Any thoughts? I am presuming the last 2 of those 3 are most likely to be causing this, possibly most likely the last of these? The cambelt was was changed over 5k ago and has been fine. The car has a small oil leak as highlighted on each MOT and I changed the rocker cover gasket some months ago. I'd like to gather some insight prior to spending more cash. The only 'usual' thing I have not changed is the crankshaft position sensor - could that cause these issues?

Thanks in advance

Pauly

Steve_D

13,801 posts

281 months

Wednesday 10th July 2019
quotequote all
The way you have worded that implies these codes are as read.
What you need to do is clear the codes and see if they come back after a drive.

This may be what you have done.

Steve

paulyv

Original Poster:

1,067 posts

146 months

Wednesday 10th July 2019
quotequote all
Steve_D said:
The way you have worded that implies these codes are as read.
What you need to do is clear the codes and see if they come back after a drive.

This may be what you have done.

Steve
It's a good point Steve. The garage did these for me whilst I was not there. I will ask but I presume these were indeed cleared beforehand.

paulyv

Original Poster:

1,067 posts

146 months

Monday 15th July 2019
quotequote all
To finish this thread (I do hate it when they are not finished),

The car is fine now - my replacement (not new) MAF sensor was possibly up the creek and a new throttle position sensor was fitted which may or may not have been a cause as the codes had not been cleared.