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View Full Version : Unhappy Idling from cold


wrinx
17-10-09, 19:45
Still having problem with the idle and would welcome your suggestions...

I need to check the MAP sensor pipe but not convinced that's at fault because it idles fine when warmer, after about five minutes.

Works done so far...

water temp sensor replaced
valve clearance set
ICV cleaned...twice!
found the source of the hissing (not inlet related)
system appears to be without leaks
new air filter
new NGK BPR7EIX iridium plugs


I'm wondering about wear in the ICV and the measurement of the little nut on the end :roll:

Could it be my C&B inlet cam is causing the problem, idle when warm is still lumpy but I can't recall what it was like before?

Might look at replacing the plug leads...any other ideas?

wrinx
wrinx
17-10-09, 20:04
Forgot...car is running a Squadra chip and 97ron fuel..

wrinx
arjunior45
17-10-09, 22:00
Squadra chip as far as I recall is just for an oem engine/car cams included.

Which C&B cam you have? Is it possible you have fueling problems due to the chip or timing problems with the cam setup you use?
wrinx
17-10-09, 22:12
Yes...it is very possible :roll:

From memory it's the "medium street".

Think I need to hurry up and buy a new turbo and get it remapped :eek::doh:

wrinx
AlfaJack
17-10-09, 23:16
I think it's the map too.
wrinx
18-10-09, 00:21
Yeah, seems the most likely culprit :roll:

Probably not getting enough fuel on cold starts...it has become a little harder to start too (crank sensor on my list to do!).

wrinx
arjunior45
18-10-09, 13:56
Yeah, seems the most likely culprit :roll:

Probably not getting enough fuel on cold starts...it has become a little harder to start too (crank sensor on my list to do!).

wrinx

don't you have an AFR meter?
wrinx
18-10-09, 19:24
I do, not fitted yet...although it's only a basic one, not wideband.

wrinx
arjunior45
19-10-09, 13:01
even a narrow band AFR should be able to indicate bad fueling at idle or constant speed.
I think at least.
wrinx
19-10-09, 16:12
Yes, it will just say good or bad, which is all I wanted.

Getting p155ed off with my Q4 at the moment...coolant out of the expansion bottle at 95degrees, need to check head gasket :(

Think the second hand turbo has blown too :roll:

Seem like I fix one thing and two more go wrong!

wrinx