240sx high idle

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scottp85
Posts: 2
Joined: Wed Mar 13, 2013 9:49 am
Car: 1992 nissan 240sx convertible

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hi guys im new here and having trouble with my 92 240sx convertible. first off it idles high at 2000 rpm and drops to 1000 rpm when put in gear but when i put it in drive or reverse it lunges forward and backward. and when in park and revved and let of the pedal it drops to 2000 rpm and jumps back up drops again and does that couple times before finnaly stopping at 2000 rpm. any help or ideas would be very appreciated and helpful

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sx moneypit
Posts: 8911
Joined: Wed Aug 26, 2009 2:54 am
Car: 2010 Nissan 370Z
1986 Toyota MR2
Location: Memphis,Tn.

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Moved this to 240 technical.

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scottp85
Posts: 2
Joined: Wed Mar 13, 2013 9:49 am
Car: 1992 nissan 240sx convertible

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thanks man. appreciate the help
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CSUPUEBLOTIM
Posts: 742
Joined: Mon Mar 31, 2008 3:45 pm
Car: 1992 240sx Sr20det Coupe Silvia Front

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I would check for possible vacuum leaks first.
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