7m-gte Idle

[Deeznuts]

Hey guys My 7M runs pretty good but I believe I have a intake leak somewhere. I I have a stock 7m-gte with 3in exhaust and a open airfilter. I sprayed Brake Clean around the intake and IC setup i got no change in sound ofcourse maybe I should have someone sit inside and watch the RPM's. At idle it sits at 1000 when I first go to start it sometimes after driveing a bit when coming to a stop it will idle a 1500- 2000 rpms. If it tap the gas pedal the rpms will drop back down to 1000 ( i believe that is the ISC valve). I played with the TPS and it didnt do anything. I thought it was the timeing at first reset the timeing (wrong by accident ) and the rpms were normal but no power. So now im think its a intake leak.
Thank you for your time.

 

[1989MKIII]

make sure you have all of the vacume lines hooked up in the right stop. i know when we built my custom intake, we had some of them in the wrong place. and it did that. then i got a book. and got online and got a layout of the lines and got it right. now it idels fine...

justin

 

[Deeznuts]

ok heres an update. I swapped my ISC's I have two. (one is good it seems and the other you have to beat on, the resistance is in spec on both) Well I got my good one to close and i put it in. Then I lefted it unplugged I started the car adjusted the screw and it idled fine(600). After a bit of driveing when comeing to a stop it idled at 1500- 2000 again tap the pedal and it dropped to 1000-900. But not 600 which it idled at before i started driveing. The throttle is completely closed when my foot is off the gas. Tomorrow ill check and make sure the plate isnt sticking as far as I kno right now it isnt sticking but I will check.
__________________

 

[shaeff]

you adjusted what screw? you're not supposed to adjust any screw for idle. it's computer controlled, and any adjustment you make, will just be adapted to by the ECU.

-shaeff

 

[Deeznuts]

vaccum is 21 at idle

 

[mkiiSupraMan18]

probably the same screw I always mess with.... thats the first thing that popped into mind when he described it.... good luck getting it back to normal...

 

[Deeznuts]

well that throttle body come out of a 88 my engine is a 90. Which has no screw.
Even so why when i come to a light it idles at 1500 - 2000 I tap the pedl and it drops to 1000. I swapped out the throttle cable the plate goes all the way back???

 

[jetjock]

you adjusted what screw? you're not supposed to adjust any screw for idle. it's computer controlled, and any adjustment you make, will just be adapted to by the ECU.

-shaeff

Sigh.....http://tinyurl.com/7b2ka

 

[shaeff]

Sigh.....http://tinyurl.com/7b2ka

no reason to sigh, sir. thats some good info. (cant believe i missed it!)

-shaeff

 

[drunk_medic]

I never had a need to look it up, but I was a little puzzled when I heard people talking about idle problems and mentioned adjusting a screw, especially when they do not list a Lexus AFM as a modification. It's good to clear this up; the thought of people blindly adjusting their cars is horrifying - especially given the beauty of our cars.