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Idling and gear problem

JAPCAB

By JAPCAB,
in General Maintenance

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  • 2 weeks later...
blind_elk Grand Master

blind_elk

Posted
Posted
Hi all I have a idle problem from cold start. Wants to rev a 2k rpm until warm then OK with some hunting on occasions. The AAC is fully adjusted in and still revs high. Has happend since new turbo, plenum, throttle body fit up and yes above 20psi boost on occasions. May it need a clean or new diaphram or even the HKs idle stabilizer. PFC temp/idle settings seem OK.

Thanks

It's supposed to rev high when cold (but maybe 2k is a bit high).

The AAC should only be adjusted when the engine is up to operating temp, and you need to disconnect the electric plug first (otherwise the ECU will just keep making adjustments, countering your adjustment).

If it still revs high, check the position of the TPS, that it is closing properly and sending the 'closed throttle' signal to the ECU.

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