weird idle... need help

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s13r20det
Posts: 168
Joined: Wed Sep 06, 2006 7:24 am
Car: 1990 Pignose s13

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well for the past month or so, my car has been idling very weird. sometimes its idles around 800 which was normal before but when i drive in the idle goes up to like 1500 and just stays steady at 1500. when i am on the freeway for like 20 minutes and get off, then it goes up to 2000 then drops back down to 1500 and then repeats until i start driving. i have searched and cannot find anything.

anybody got any ideas?

thanks!


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SpeedRacer1
Posts: 3144
Joined: Fri Jul 26, 2002 7:44 pm
Car: 1990 240SX, G35

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What ECU?

s13r20det
Posts: 168
Joined: Wed Sep 06, 2006 7:24 am
Car: 1990 Pignose s13

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not sure what number it is without looking, its the stock ecu for s13 blacktop and it has no head fins...

does that help?

bonestocksr20
Posts: 216
Joined: Thu Jul 12, 2007 4:18 pm
Car: 1993 240sx w/ sr20det

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mine did the same thing and it was the idle air control valve. they can be cleaned but i just replaced mine and it has idled perfect ever since

s13r20det
Posts: 168
Joined: Wed Sep 06, 2006 7:24 am
Car: 1990 Pignose s13

Post

bonestocksr20 wrote:mine did the same thing and it was the idle air control valve. they can be cleaned but i just replaced mine and it has idled perfect ever since
ya, on a different sr i tried cleaning it out with the carb cleaner and after that i had a ticking noise in the head. i think there might be a boost leak at the intercooler too because the bottom of it is all ****ed up...

s13r20det
Posts: 168
Joined: Wed Sep 06, 2006 7:24 am
Car: 1990 Pignose s13

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anyone else?


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