88 Supra idle

lethalwithasupra · 07-29-2006, 09:48 AM

... does it idle high at first for maybe 10 or 15 mins and then go down to a normal idle after it warms up ? Cos it could be the cold-start injector doing its normal job

soccerwolf · 03-12-2010, 01:08 AM

Completely forgot about my original post here. I eventually traced the problem to the idle speed screw. It was loose and the engine vibration caused it to rotate in or out. I could adjust it to a decent, low idle then drive the car for a few miles and the idle would be back to 2000+. Solved the problem by removing the screw and reinstalling with a stiff spring under the head. The spring tension eliminated the vibration-induced self-adjustment.

07-29-2006, 09:48 AM	#1
lethalwithasupra 3" Exhaust Join Date: Sep 2005 Location: south cantebury Posts: 112	Not trying to sound like an arsehole, but unsure how else to phrase it ... does it idle high at first for maybe 10 or 15 mins and then go down to a normal idle after it warms up ? Cos it could be the cold-start injector doing its normal job __________________ So I bought this old Honda bike, an NSR250. Bit of a street racer, I guess. I'm told they're fast. Delivering it home with a friend driving the Supra for the first time. I drop gears and make a scream from the twin pipes flowing down this pony's flanks and it takes off like it's tail's on fire. I look back when the Honda gets to its tap-out and the Supra's only two lengths behind. No one I've let ride my bike has told me its slow, they've all loved the thing. That car is a good thing indeed.

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03-12-2010, 01:08 AM	#2
soccerwolf Stock Join Date: Jul 2006 Location: South Carolina Posts: 3	Completely forgot about my original post here. I eventually traced the problem to the idle speed screw. It was loose and the engine vibration caused it to rotate in or out. I could adjust it to a decent, low idle then drive the car for a few miles and the idle would be back to 2000+. Solved the problem by removing the screw and reinstalling with a stiff spring under the head. The spring tension eliminated the vibration-induced self-adjustment.