ok i have a 92 GT and the other day i took the two sensors on the throttle body off to clean them, and when i put them back on it started idling very weird. it would idle real low one minute and the next it would idle really high and when i accelerate or drive steady it stutters/hesitates really bad.
when i cleaned the sensors i used WD-40 on the top sensor and i used throttle body cleaner on the idle air control valve.
i just replaced both sensors and it hasnt changed anything, its still bein moody lol
so if anyone has some advise, it will be GREATLY APPRECIATED



by the way i only have headers back exhaust, cold air intake, pulleys, msd coil, and msd ignition
none of these problems started till i took the sensors off to clean them

 

What 2 sensores? TPS and IAC? Both probably out of adjustment. FYI dont use WD-40 on sensors! How did you set them when reinstalled?

 

IAC sensor (on the side) should just bolt on and off, the TPS (on top) is the one you can screw up, did you align the little tabs on the TPS to your t body?

 

Plus, you have to set the closed throttle voltage on the TPS too somewhere around .98 volts.

 

yea i never use WD on anything but a friend of mine said it was fine to use on the TPS sensor.
and yea it was the TPS and IAC. and the same friend said he set the adjustment right, but i dont know.
the idle problem went away when he did his thin but the stutter/hesitation is still there


DrDirt- - how do u know when its at .98 volts?

 

If you dont know this its probably not set right. You have to use a volt meter, you cant just mark it and reinstall it "in the same spot" that adjustment is very finickey

 

ok, thats wat Ray was sayin too

so how do i do that? just put it on to where i can adjust it and splice the wires for the volt meter and and set it to .98

 

vaccum leak by chance (IAC)? did you reset the ECU after you took the TPS off?

 

yea, i reset it
and i checked all the vacuum lines

 

i was thinking more the IAC to throttlebody seal than lines