Quote:
Originally Posted by Clan
It seems your constant Idle valve isn't working or not adjusted properly More likely throttle blocked with carbon around the edges not allowing enough air through.
If this problem has gradually got worse suspect a dirty throttle plate and housing inside .
if it suddenly happened , maybe an electrical problem.
If it happened after you did something perhaps throttle and position sensor need setting up from scratch again.
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The idle valve and ECU will compensate for carbon build up, this problem only happens shortly after starup. If it doesn't stall the ECU will compensate. Like I say above the ECU compensation isn't kicking in for some reason.