When i unscrew maf sensor a little it works out air flow and it runs just fine but if i have it screwed all way down like it suppose to be maf sensor it jumps up and down and doesnt run to great,,,,

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I'm still not sure what you are unscrewing. The electrical connector or are you pulling the sensor out of the duct?

This is not a test that means anything to me. So the result is null. IF you are having an idle issue, look for broken intake air boots, vacuum leaks and fuel delivery issues. I would start by checking the DME for fault codes. If the system is not working properly, a fault code will be set. This will be your best bet when diagnosing.


- Nick