wont start well when cold.just started

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zen

New Member
1995.no cold start injector type.been perfect apart from knock sensor fault which has now cleared itself.
Untill last night and this morning..starter wizzes it around but no start for ages.fine when warm.suspecting iacv not opening..yet iacv is working..was perfect 2 days ago!.
Have fuel so therefore should have spark.
What would cause iacv to not open when cold yet be ok when warm?
When warm does open iacv for starting..ie kinda blips the throttle then drops revs..
Also..it is fueling the car when cold rich like it shoukd..
Thanks
 
Oh..once it starts from cold it keeps the revs up as it should(but after blipping the throttle)
 
Yes.getting good reading at ecu .besides should open iacv when shuttingcdown engine for next start cold or hot..and also it knows that it is cokd as richens up mixture when cold.
 


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