Intermittent Idle Problem

May 01, 2007 4 Replies

Hi,



My year 2000 UK Focus has developed an intermittent fault.


Normally it's when the engine is warm, and I've been travelling above



60mph.


When I take my foot off the accelerator, the car will keep going at roughly the same speed. If I dip the clutch, the engine can race to as high as 4000rpm.


Could this be the ISCV I keep seeing references to?


thanks in advance Phil



In message , snipped-for-privacy@yahoo.com writes

No, its more likely to be a problem with the throttle position sensor.

I had/have a similar problem but only in 1st gear-the throttle will stick in 1st and race away-I have taken it back to Ford 5 times and they tell me there is no problem-a guy on here said it was the sensor being worn-sounds very dangerous though at 60!

If the car is on the warm up say no more than a couple of minutes from cold start, then this is normal and is a peculiarity of the ECU software.

If it still does it when hot then you have a problem, possibly with the TPS.

1.8 and 2.0 cars are most affected.

Tim..

thanks for the replies guys. I took out the TPS and just sprayed it with cleaner, put it back in, and it seems to have solved the problem for now.

I don't know if I'm imagining it, but it seems a bit nippier around town now, a bit more responsive.

Is this possible?

Ta

Phil

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