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I'm having wierd idle problems with my mr2 and im not sure wat the problem is...when i first start up the car cold it idles higher than usual like it should...but when the car is fully warmed up the car idles up and down...sometimes i have no problem...sometimes it idles slightly up and down...but other times it idles so drastically that the car is about to die and then it revs up past 1000 rpm....the problem is not constant but it occurs kinda randomly...so wats my problem?...can anyone help me? thanx
 

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Make sure your coolant is bled all the way. The BGB has an odd procedure that must be followed for this. If it's not bled, it will give a false indication to the ECU telling it the engine is cold when it's warm.

Make sure your TPS is functioning correctly. This is what tells the ECU to start controlling the idle.
 
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