car revs to 2000rpm on cold start up

drewsta82 · 23rd August 2015, 13:21

I've checked the idle speed valve and cleaned it yesterday but it's still doing it. I'm not sure what it is. Any idea guys.

Rev Jules · 23rd August 2015, 13:32

Mine does that but was told nothing to worry about, it idles at 650.

Rev Jules

drewsta82 · 23rd August 2015, 13:41

Quote:

Originally Posted by Rev Jules

Mine does that but was told nothing to worry about, it idles at 650.

Rev Jules

It's been doing it a month now and im getting worried

stocktake · 23rd August 2015, 14:11

V6? Possibly the fast idle valve on the top of the throttle assy needs a service kit
MKG 100260 (L) the L may give better price

drewsta82 · 23rd August 2015, 14:42

Quote:

Originally Posted by stocktake

V6? Possibly the fast idle valve on the top of the throttle assy needs a service kit
MKG 100260 (L) the L may give better price

Where from

errol1 · 23rd August 2015, 14:47

Rimmers!

Leyland Worldmaster · 23rd August 2015, 15:14

Quote:

Originally Posted by drewsta82

I've checked the idle speed valve and cleaned it yesterday but it's still doing it. I'm not sure what it is. Any idea guys.

When my Rover V6 did that, I found a leak on the plastic inlet manifold chamber. Worth checking that. Good luck getting it sorted!

drewsta82 · 23rd August 2015, 21:37

Quote:

Originally Posted by leopard680

When my Rover V6 did that, I found a leak on the plastic inlet manifold chamber. Worth checking that. Good luck getting it sorted!

Any advice is great.... how do I do it.

Leyland Worldmaster · 23rd August 2015, 21:42

Quote:

Originally Posted by drewsta82

Any advice is great.... how do I do it.

So mine was taken off and it was found to have been split open to remove the VIS butterflies. I would check the breather pipes and the t piece too. Very likely split due to age and mileage.

Avora · 24th August 2015, 09:31

My V6 has been doing this for a while. Decided to check out the idle control valve this morning. It was rock solid to move but eventually got it shifting. I'm guessing it is meant to spring back ? Tried my best to free it up, reassembled and tested it and after a run now the engine hunts almost stalling before recovering.

Ooops. I think I will take it back off and try again, and worst case get myself down to the scrapyard this afternoon.

23rd August 2015, 13:21	#1
drewsta82 Gets stuck in mg zt-t+ 2.5 v6 177 bhp Join Date: Jan 2013 Location: Back in yam yam land... West Bromwich! Posts: 824 Thanks: 413 Thanked 61 Times in 52 Posts	car revs to 2000rpm on cold start up I've checked the idle speed valve and cleaned it yesterday but it's still doing it. I'm not sure what it is. Any idea guys.

23rd August 2015, 14:11	#4
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,602 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	V6? Possibly the fast idle valve on the top of the throttle assy needs a service kit MKG 100260 (L) the L may give better price __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

24th August 2015, 09:31	#10
Avora Loves to post MG ZT-T 190 Join Date: Jul 2014 Location: Penrith Posts: 441 Thanks: 89 Thanked 69 Times in 56 Posts	My V6 has been doing this for a while. Decided to check out the idle control valve this morning. It was rock solid to move but eventually got it shifting. I'm guessing it is meant to spring back ? Tried my best to free it up, reassembled and tested it and after a run now the engine hunts almost stalling before recovering. Ooops. I think I will take it back off and try again, and worst case get myself down to the scrapyard this afternoon. __________________ ZT-T 190

23rd August 2015, 13:32	#2
Rev Jules This is my second home Rover 75 Tourer+ Join Date: Mar 2011 Location: Radcliffe on Trent Posts: 10,718 Thanks: 7,308 Thanked 3,929 Times in 2,051 Posts	Mine does that but was told nothing to worry about, it idles at 650. Rev Jules

23rd August 2015, 14:47	#6
errol1 Retired ZT Join Date: Nov 2014 Location: Cymru Posts: 60 Thanks: 10 Thanked 3 Times in 3 Posts	Rimmers!