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inkubus91
18-04-2013, 17:38
Is it normal for a B18FT with standard engine management to idle high when the engine is relatively hot (between 2nd and 3rd line on temp. gauge) ?

Thanks :)
B18ftMOJO5
18-04-2013, 23:22
No idle should hold steady at all temps. Mine does anyway. Baccara b18ft.
SCHWARTZ
18-04-2013, 23:40
If you don't have the icv installed or it isn't working properly it will idle higher when hot.
inkubus91
19-04-2013, 10:47
If you don't have the icv installed or it isn't working properly it will idle higher when hot.

I do have an ICV :crap: what can I do to check it and/or repair it ? could it be something related to the sort of 'dump valve' connected to it ? I read somewhere that they usually fail when increasing boost...

Currently running 15psi on a Saab T25
SCHWARTZ
19-04-2013, 11:50
Tbh I have done away with mine to simplify the pipework. I just have mine idling slow when cold as I don't really drive it till its warmed up anyway. Best way to test would be to swap for a known working one and see if that sorts ya problem.
SCHWARTZ
19-04-2013, 11:51
Where snouts you based?
inkubus91
19-04-2013, 12:35
Where snouts you based?

Malta :cool:


haven't got a spare one and most probably I'm the only guy running a B18FT on the island.. no volvo's available for parts neither :crap:
SCHWARTZ
19-04-2013, 13:59
I'm sure a few other cars share the same valve. The Clio rsi uses same engine and obv 440 460 480 do but ifanyone could search the part numbers and compare.
inkubus91
04-05-2013, 17:24
Tbh I have done away with mine to simplify the pipework. I just have mine idling slow when cold as I don't really drive it till its warmed up anyway. Best way to test would be to swap for a known working one and see if that sorts ya problem.

How do you adjust the idle speed ?

The only way I've seen that can adjust the idle speed is by turning the small screw (originally covered by a small piece of black plastic and some sort of 'locking' clip) that stops the throttle wheel..
SCHWARTZ
04-05-2013, 19:17
That will open up the butterfly. Best way is to remove a plastic cap to the left of the butterfly and there will be a brass bypass screw that lets air bypass the butterfly.