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90 240sx ka24e HELP PLEASE!!

1102 Views 4 Replies 2 Participants Last post by  240justin
It starts fine and runs as long as you keep rpm up say above 1700 but cuts off
when i start to let it idle down.Any help is greatly appreciated.
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The IACV assembly, might need cleaning. There could be a lot of powdered carbon in it which would prevent the AAC valve from moving freely.
There may be a major vacuum leak in the intake system. Check the intake manifold nuts to make sure they are tight. Also check the intake plenum bellows at the throttle valve and at the MAF for cracks or loose clamps.
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