ok so i celaned to TB the IAC and now upon startup it idles at 500 rpm ( when it used to be 700) and it fluxuates and someitmes goes lower and then if goes below 500 the engine makes a bad sound and i noticed that the voltmeter flickers too. i'm really pissed off and desperatly need help

i took the iac off and cleaned it again and it is spot less

and i used the CRC air intake and TB cleaner

 

Did you reset the ECM when you were finished? This must be done after cleaning or replacing the IAC.

 

what did you clean it with? i believe those throttle bodies
are coated and if you use the wrong cleaner it removes coating and you get erratic idle and some other problems

 

How do i reset the ecm?

 

Disconnect the negative battery cable, and then turn on the headlight switch for a couple minutes. Turn the headlight switch off, and reconnect the negative battery cable.

 

Nope just tried it didn't work i left the -cable off for like three mins and still nothing are you sure that a 1994 has to habe the ecm reset

 

I know for a fact that all vehicles with an IAC need to have the ECM reset after cleaning or replacing it. I'm not saying that that's for sure your problem, but it has to be done. Did you turn on the headlight switch while the battery was disconnected? If not, 3 minutes isn't long enough to reset your ECM.

 

Yes i turned the headlight switch on when the battery was disconnected. any other sugestions? your help is deeply appreciated

 

What else did you do when you cleaned the throttle body? Did you remove the TPS? Did you install a new IAC gasket and a new TB gasket? Was your EGR passage clogged, and did you open it up?