high idle rev

**Posted:** Sat Nov 06, 2004 4:04 pm

everytime i start the car the rev is just under 2k. im guessing this is quite high. any ideas why??

**Posted:** Sat Nov 06, 2004 5:59 pm

I guess it does this when engine is cold?
If so its like a choke, the engine needs little more oomph

when it first wakes up, so it needs more fuel, hence the faster idleing, all my cars have done it, not sure what my ZXi idle speed is as have never taken much notice of it.
I'm sure others here have a more technical explanantion of it!!

**Posted:** Sun Nov 07, 2004 11:12 am

thanx mate but it seems to hav gone better now!! comes down to about 1k.

**Posted:** Sun Nov 07, 2004 1:05 pm

Mine has done this since it started getting colder in the mornings. It sits at 1500rpm for about 5-10 minutes then comes down to 800rpm once its warmed up.

**Posted:** Mon Nov 08, 2004 11:19 am

As steve said, this will be the autochoke.

When the engine is cold, the fuel tends to condense into large drops in the manifold, rather than completely vaporizing. By supplying a richer mixture, there will be enough vapor to assure complete combustion.

**Posted:** Mon Nov 08, 2004 8:47 pm

what should the normal idle revs be at? cos mine seems to sit at about 700 rpm n i reckon it should be a bit more. also, when i come off m'ways, n generally while the engine is warm, the revs dont seem to be stable once theyve dropped, eg when stood, i no theres other threads about this problem on here, but first i think im gunan try resetting the ecu. its defo not the air intake sensor as i had it cleaned out, old car required this replacing, but it hasnt made any difference. any other ideas?

**Posted:** Mon Nov 08, 2004 9:04 pm

[quote="m0053"]what should the normal idle revs be at? cos mine seems to sit at about 700 rpm n i reckon it should be a bit more. also, when i come off m'ways, n generally while the engine is warm, the revs dont seem to be stable once theyve dropped, eg when stood, i no theres other threads about this problem on here, but first i think im gunan try resetting the ecu. its defo not the air intake sensor as i had it cleaned out, old car required this replacing, but it hasnt made any difference. any other ideas?[/quote]

I think with an induction kit on they sit at about 750rpm

Ben

**Posted:** Tue Nov 09, 2004 8:31 am

Mine without induction kit is about 700-750 when warm.

Mark

**Posted:** Tue Nov 09, 2004 9:32 am

I've got std. airbox with K&N panel filter - idles at 1,100 when cold, eases down to 750 when she's warmed up ...

**Posted:** Tue Nov 09, 2004 7:45 pm

My V6 idles at about 1000 warmed up, which seems high by what you guys are saying. I was wondering if there is an air leak, as sometimes the idle fluctuates too.....

**Posted:** Wed Nov 10, 2004 1:15 am

1000rpm seems way too high, mine settles at around 800, though when cold about 1100-1200.
What does it run at when cold?

**Posted:** Wed Nov 10, 2004 11:17 am

Similar to yours....

**Posted:** Wed Nov 10, 2004 11:53 pm

mine idles at around 750 as well... they check the idling revs in the emmissions part of the MOT if you look at the resuts....

**Posted:** Thu Nov 11, 2004 12:23 am

when cold i get 1.8k but idles at 700 - 750

**Posted:** Thu Nov 11, 2004 7:40 pm

Anything upto about 2000 when cold.... drops to 700-750 when warm and toasty.... (1.5)

**Posted:** Fri Nov 12, 2004 12:23 pm

up to 2000 when cold.... drops to 700-750 when warm.... (V6)

**Posted:** Fri Nov 12, 2004 12:45 pm

mine runs at about 1500 when its chilly - about 700 - 800 when warm

**Joined:** Tue Nov 12, 2002 7:41 pm **Posts:** 536

Mine idels about 1500 cold and 700/750 when cumfy on a 1.5

If you are worried, check the tension on the accelerator cable. Shouldn't be too taught

**Posted:** Fri Nov 12, 2004 1:46 pm

Should suprisingly loose, I've found.

Mark

high idle rev

Who is online