wtf i dont get it

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
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sodtoast
Posts: 293
Joined: Sun Nov 08, 2009 1:03 pm
Car: 1991 2+2 300zx

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my car idles fine at a stop or at 45mph or lower but if im on the freeway and push in the clutch for too long it stalls out i dont get it, oh and i just put a 120k timing belt kit on itany ideasthx


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Zwicked
Posts: 3133
Joined: Mon May 14, 2007 6:19 am
Car: 1990 300 ZX tt, 1990 240SX

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You should set the base idle properly on the IACV.

- warm the engine to operating temp and shut it off- unplug the AAC-start the engine and set the idle screw so it idles at 650-plug the AAC back in

It should immediately increase and settle at about 750. If nothing happens, the AAC solenoid might be NFG or the IACV casting might be plugged with oil buildup.

Having the base idle set too low, or if the AAC is dead will result in the idle diving and sometimes stalling the engine when the clutch pedal is depressed.

Also check the TPS to ensure it is set right.

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sodtoast
Posts: 293
Joined: Sun Nov 08, 2009 1:03 pm
Car: 1991 2+2 300zx

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Fer sure I'll try it and let you know if it workedthx


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