when you start the car but it is warm it will idle at about 1000rpm then if you hit the gas it will not come down from 1500rpm and the only way you can get it back down to 1000rpm is turn the car off. this is a na 86 i just took my intake manifold off because it had a vacuum leak and then i put it back on

 

bump

 

Dude, if you can completely re-phrase this question.. I will be able to help you.

I am having difficulty following the path here.

 

i just fixed a vacuum leak now when you start the car and after it is warmed then i turned the car off and then started it back upand it will idle at about 1000rpm then you can rev it up then it will not idle under 1500 rpm unless you turn off the car

 

bump

 

Where did it idle when you had the vacuum leak ? Perhaps you need to reset the idle back to ~750 ?

Remove the cold start mechanism

 

it idled at about 800rpm with the vacuum leak .how do you reset the idle and i don't think i have the cold start mechanism i did the tb mod

 

well.

youve modded the TB..
I have never done that, so im at a loss as to how its really broken, but you need to follow the factory service guide to set the idle and use that "set" wire and stuff.

also, check the TPS and check for a stuck throttle or cruise cable
neither should be very tight.

 

it idled ok when it had a vacuum leak and before it idled ok too with the other intake manifold it had and the tb was modded.I also checked the tps and the cables. the problem is that when you start the car up when it is warm it will idle at 1000rpm then go up to 1200rpm by it self and if you rev it it will not idle under 1500rpm unless you turn the car off

 

bump

 

y don't you just **** with the idol screw till it goes down to 750

 

you need to adjust the idle and TPS and possible timing all together.

This will ensure proper operation.

ONLY DO THIS IF THE ENGINE IS UP TO TEMP.

otherwise youll have this problem all over again.

 

never mind i just found out it had a vacuum just after i tried fixing it and i just took the intake manifold off again
to fix the leak