how can i raise my rpm at idle . its at like 300 with no a/c and a turn signal. please help. i'm not very car smart so please explain detailed

 

Yeah. And its quite simple. All you do is turn a screw located near the TB.

 

does anyone know why my rpms would drop below idle during breaking? it doesnt do it all the time, but sometimes at night it will make the light go dim for a sec and then back to normal any ideas?/?

 

Before you adjust the TB screw you need to close the AAC valve otherwise you are not correctly setting the idle. To close the AAC valve you need to turn the diagnostic screw on the ECU to the diagnostic mode (Do a search on this forum for where the ECU is located etc) then you can adjust the idle via the TB screw. Once you have it set right, then turn the ECU screw back to where it was.

Brent

 

Before setting the base idle speed, make sure the throttle body is clean. The idle speed has dropped over time because the TB is dirty. Adjusting the screw lets more air in, but there is a limit to how much the AAC can flow to compensate for extra load on the engine and a dirty TB.