TwinTurbo.NET: Nissan 300ZX forum - I am having this same problem on both of my Z's.
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Subject I am having this same problem on both of my Z's.
     
Posted by pieboy100 on August 13, 2015 at 1:36 PM
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In Reply To Re: Good info. posted by madkiwi on August 13, 2015 at 10:04 AM
     
Message It will be ok most of the time, and then when I am at idle at a stop light it will jump to 1500 RPM. Then the next stop light it is idling normal, even for days at a time it will be normal. One car I changed the throttle position sensor but still did the same thing. Maybe I need to set it up like you did.

     
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