Idling

[JAZ 34]

Guys,

Need a bit of guidance here please.

I start the car and the idle revs are 1k. That's fine - it is constant. I then drive around, the car warms up and then I find the revs 'pulse' from 800 to 1k revs and it sounds horid. It never did this before. Also notice and hear a bit of exhaust burbling and popping whilst stationary.

Any advice?

Thanks in advance,

JAZ 34

[D_G]

First job is to clean the throttle butterfly..

Take off the intake pipe from the intercooler to the engine, get someone to open the throttle wide open and I use a toothbrush and carb cleaner (and rag). Try not to spray too much into the engine although it won't harm it, it will start badly and run rough for a few seconds.
Let it idle for a few minutes to stabilise itself and away you go.

Dave

[mgbond]

D_G said:

First job is to clean the throttle butterfly..

Take off the intake pipe from the intercooler to the engine, get someone to open the throttle wide open and I use a toothbrush and carb cleaner (and rag). Try not to spray too much into the engine although it won't harm it, it will start badly and run rough for a few seconds.
Let it idle for a few minutes to stabilise itself and away you go.

Dave

I did this and afterwards my car iddled at 1800rpm I then had to adjust the idle screw to get it back to 800rpm. Just goes to show how much crap builds up on the butterfly.

Bondy

[JAZ 34]

Thanks guys.

JAZ 34

[joust]

Hunting is a sure fire symptom of a lamda sensor on its way out and/or a leak from the turbo manifold/gasket.

Get it checked soon if you can.

J

[saucyboy]

Mine recently had a similar problem on a warm start. My lambda had failed (Confirmed on emissions tester). I changed them Friday and al is good. Oh, I also did the throttle butter fly (5 Minute job), although mine wasn't that dirty.

Good luck mate

James

[JAZ 34]

Thanks,

I don't understand it as I just got the car back from service also??

They said all is fine but I am not si sure.

JAZ 34

[D_G]

They wouldn't have cleaned the butterfly as part of the service, probably didn't check the emmisions either.

[JAZ 34]

Thanks DG,

Anyone got photo's of what I am looking at for the cleaning?

Also found that the exhaust bracket has snapped! That might explain a lot of the noise I am hearing at the back of the car. Looks like it has been snapped for a while....

Thanks in advance,

JAZ 34

[F.C.]

JAZ 34 said:

Thanks DG,

Anyone got photo's of what I am looking at for the cleaning?

Also found that the exhaust bracket has snapped! That might explain a lot of the noise I am hearing at the back of the car. Looks like it has been snapped for a while....

Thanks in advance,

JAZ 34

The brackets snap like clockwork I've Mig welded mine twice on one end and once on the other in three months (2500 mls)of ownership.
My car is at Roush being fitted with their stainless sytem as I write.

[joust]

JAZ 34 said:

Also found that the exhaust bracket has snapped! That might explain a lot of the noise I am hearing at the back of the car. Looks like it has been snapped for a while....

That will be your problem. With the bracket snapped the turbo takes all the weight meaning you get leaks. Get it checked out end to end by one of the normal service centres (Plans, Roush etc.) ASAP.

J

[JAZ 34]

Thanks Joust,

All adds up !

JAZ 34