Shite Old Favorit - odd behaviour

TBH it sound's like it's running with too much fuel, rather than too little. I don't know how these engines regulate idle, but surely not by adjusting the throttle butterfly thus causing the pedal to move? Anyway, does the over-revving occur when hot or cold, or both? I'd suspect coolant temp sensor and/or intake temp sensor. Both can cause the engine to run rich. The O2 sensor is also a possibility, but only if the car appears to be drinking more fuel than usual.

if i had my foot resting on pedal and turned ign on when cold the pedal always moved a bit. And on felicia too. I cant rmeber if octy did it.

im guessing at a split vacume pipe, somewhere...I dont hbol for that car anymore

I can't imagine it would do that, no. I wondered if it could be something to do with a vacuum somewhere seeing as it usually happens on the overrun.

Hmm...usually when it's about a quarter warm, but it can happen pretty much any time.

Or throttle position sensor, I thought? Trouble is I CBA to spend a fortune on sensors because the fact that the pedal definitely moves when it happens is bugging me and makes me think it's not a sensor at all.

Thanks for the ideas.

Si

Ho yes? Thanks Neil, I'll see if it does that and investigate it further if it does. I never have my foot on the accelerator when I start it coz you're not supposed to but I will now.

Si

I've got a Manuel (ole) for it but it doesn't help a lot. I'll give the pipes a better look over as you could be right - maybe one's leaking on the overrun?

Si

my foot was just resting on it, not actually to move it myself. Also, a festa i had for a bit, endura i, that moved the pedal when cold too.

"Neil - Usenet" wrote in news:bNyjh.143355$ snipped-for-privacy@fe3.news.blueyonder.co.uk:

Does the car use a stepper motor for idle control? If so, could that be the cause of your pedal movement?

Stu