Originally Posted by P10Pate

Hi folks! I'm having a problem with adjusting the base idle and timing with my Prime. I'm from Finland so i have to excuse if i'm having some lingual difficulties.

The problem is; when i get to the point where i am supposed to adjust the base idle to 650 rpm when TPS is disconnected, I CAN'T GET IT TO THE SPECIFIED RPM's! When the idle screw is turned all the way to clockwise, the car runs about 1100 RPM's with the TPS disconnected. When i connect the TPS again, the car runs about 800 RPM's.

I tried to check for vacuum leaks and i found none. I tried to check that the throttle plate closes fully and the "idle-up thermo element" isn't blocking the throttle from closing all the way. They seemed to be OK.

Then, i took off the entire throttle body, cleaned the MAF, adjusted the TPS that was actually not in the specified Kilo-Ohms when the throttle is closed. My repair manual says that the resistance of the TPS should be 0.5 Kilo-Ohms when closed throttle. It was 0.7 Kilo-Ohms.

Then i took off the IACV and the FICD and also cleaned them up.

Then i installed the throttle body and tried the idle-adjusting again. STILL HAVING THE SAME PROBLEM! The car just continued idling 1100 RPM's when the TPS was disconnected and the idle screw is bottomed out!

Therefore, i can't get to the timing adjusting point because i'm stuck with this goddamn idle problem that is really frustrating.

I am VERY VERY VERY thankful if someone has a cure for my problem. Something just isn't normal....

Thank you, from Finland.