Engine Fault on 2005 2.0l TDCI Focus

[infotech]

Hi All

I have a 2005 Ford Focus 2.0l TDCI Zetec Estate that has done approx. 76,000 miles.

Recently the car has developed an intermittent fault (it has occurred twice so far) where once I have started the engine, the car won't rev for a few minutes when I put my foot on the accelerator. I put my foot down and there is no response, the car continues to idle. The car idles in a lumpy fashion. After a few minutes running, the problem magically fixes itself and the car will rev again and run ok.

I would like the forum's opinion on what could be causing this, I am thinking throttle position sensor.

Any thoughts?

Thanks

infotech

Edited by infotech on Wednesday 4th March 15:33

[skid-mark]

i've herd the fuel pumps play up on these and can put the car into limp mode when they pack up for good

[infotech]

Thanks for your comments. I found this at Parkers:

"Mysterious 'Engine System Faults' on diesel leading them to lose power and revert to limp home mode may be caused by an intercooler pipe weld fault leading to a crack in the pipe. Problem of 1.6 and 2.0 16v diesels slipping into limp home mode put down to throttle butterflies sticking or their spindles wearing prematurely causing them to stick. The throttle position sensor identifies this and sends a message to the ECU to limit the engine to limp home mode."

Any other diagnosis thoughts anyone?

Rgds

infotech

[skid-mark]

infotech said:

Thanks for your comments. I found this at Parkers:

"Mysterious 'Engine System Faults' on diesel leading them to lose power and revert to limp home mode may be caused by an intercooler pipe weld fault leading to a crack in the pipe. Problem of 1.6 and 2.0 16v diesels slipping into limp home mode put down to throttle butterflies sticking or their spindles wearing prematurely causing them to stick. The throttle position sensor identifies this and sends a message to the ECU to limit the engine to limp home mode."

Any other diagnosis thoughts anyone?

Rgds

infotech

this could be the cause of whats wrong would deffinatly cause the problem that you have if it was a problem with the throttle position switch etc only way you'll know is to take the pipe off and have a look at what the butterfly is doing and see if the pipe is faulty,
also should have fault stored in ecu if this has happened and gone into limp mode.