ok i start my 89 tII up in the moring and the idle goes up to like 288 and drops off to like 850 in like 1 sec how can i fix this? it has a jdm motor

 

sorry not 288 but 2800

 

Adjust the thermowax/fast idle cam per the fsm. And maybe clean out the water passages to the thermowax. Make sure the water hose is connected to the throttle body. But......back to the first...adjust the fast idle cam and fast idle screw/thermowax. It's in the fsm. Fuel Section.

 

Even without the A-spec AWS, the ECU still does a fast idle warm up using the BAC.

One option is to put in a J-spec ECU.
Then you get less revs & more fuel mixture enrichment during warm up, and no check codes for deleted emissions solenoids.

 

well i dontknow if the person befor me put in the j spec ecu. is there a way i can tell

 

Why not just start it in gear?

 

Ok. What was the question? You WANT to see the normal factory approx 3000rpm for 17 seconds? Or no high rpms at startup?

 

i would like the factory warm up to run at 3000 for 17 secs