Idle

[stevegto3]

Hi Guys

Slightly wierd issue. I seem to get a drop in revs on idle, it seems to be every few seconds you can hear and see the revs dip then back up again.

Its never sone this before, the only change has been the change of the PA catch tank.

Any thoughts?

[Rob_W]

Have you knocked an electrical connector or vacuum pipe whilst get the catch tank in?

[stevegto3]

Ive checked and all hoses are fine and secure as I thought it could be vacum issue.

[tonyvan]

you may have pushed the vac pipe on too far on the maifold it is quite close to wher you were woking when you installed the catch tank.it must not be pushed all the way in or your car wont start,even if you push it on nealy all the way, it will effect the ide. hope that helps.

[YellowShed]

Have you got the AC on?

YellowShed

[stevegto3]

thanks guys.

Tony, it all starts fine and drives fine. When I stop its fine for a few seconds and idlea like normal. then it drop and then goes up And then repeats every 2/3 secs.

I didnt disconnect the manifold end when installing the catch tank, just the end connected to the old catchtank if that makes sense.

Trevor, no AC on - zaps too much power :-)

[TuxMan]

You could try re setting the adaptive maps , could be a faulty lambda probe causing it to run rich on one bank .

[stevegto3]

Hi Tux - how do you do that?

Thanks

[TuxMan]

If you have a MBE ecu you can download the dealer soft were . Do a search lots of info on it .
Failing that if you fancy a ride I can do it for you .

[stevegto3]

Thanks Tux. Ive got hold of the software, just need to get hold of a pc as im a mac man by trade :-)

Can you use any 9pin serial to usb cable.

Thanks for the offer, would need to convince the wife I have to pop out for the 2hr drive to you ;-) I cant even get to Silverstone as its her birthday that day :-)

[Gadgeroonie]

try adjusting the throttle stop a little bit

[951]

I'd be guessing a Lambda sensor.

[stevegto3]

Hi guys
Stupid question, but when you reset the adaptive maps, do you do it with the engine still running once up to temp?

Cheers
Steve