Erractic Idleing Problem

[Martz]

Hi

I have posted this here in the hope that this will be seen by more people on the site and receive ideas.

The problem stated yesterday on the Rallye. I got home and parked up with no problems. Went back out about 1/2 hour later and it was running really funny. The car was revving by itself but only upto 2.5k revs. This stopped when I turned the steering wheel to one side, but stated again when I stopped in traffic. The car pulls fine when moving and goes with no problems.

I have recently installed a BBM solid engine mount and this does cause more vibration but perfomance is much improved. I have a feeling this problem is down to a vacuum pipe or a pipe loose in the engine bay.

Can anyone shed some light so I can try to remedy this little problem at lunchtime.

Thanks

Martz

[gibby]

I don't know why Martz but just seeing the title of this thread and before reading it I was thinking that it may be some sort of air leak.

[Len]

Yes air leak or maybe an intermitent blockage.

[Martz]

Had a quick look but can't see anything obvious. Bloody car.

There is a brown wire with a connector hanging loose though. Can see where it attaches to.

I do think air leak to tbh.

[clipperjay]

Martz you checked and de coked your ISV?
The only other thing apart from vacum leaks is there is a O2 sensor that can play up or something is lose from the throttle body on top where the gas cable is link to I've heard sometimes there is a screw that controls idle near the throttle cables that can sheer off or drop out check if its still there, check how lose the cable is?

A fellow Rallye owner had a bad blue coolant sensor go, which controls the timing I sugest that you take the wires of the ISV and then the Collant sensor and see what difference it will make mate.