Hey guys, I will jump right into the issue.

When I start my lancer while engin is cold, I have to stay on the throttle untill it warms up or it bogs down and usually dies imidiatly.

But here is the weird part...

I can adjust the curb idle screw (on top of the throttle body) to where it will idle at 750RPMs at cold. Once it warms up, the idle speed also Increases to about 1500 - 1750.

Back story.

I have replaced my; idle air control valve and motor(IACV), throttle possition sensor(TPS), and plugs and wires.

I am still throwing codes; PO301 and PO507.

 

Cylinder 1 misfire & P0507 - Idle Air Control System RPM Higher Than Expected

 

Aside from the codes - when you start your car up, is your ac/heater on? if mine are on when i start them up sometimes my engine bogs down to the point where it seems it might shut off.

 

Mine did this at one point but figured out that my thermostat was finished. Replaced it and haven't had any issues since.

 

I do not have either on when I start. Also, a new issue has occurred. When I first start my car, the cruz control light turns on as well. (But my Cruz control does not work)

 

turns over but wont start in the am. stop trying and try it again.. after 5 5o 10 times it idles very slow. letit warm up a little than it will rev up. used to hit the key in the am amd it fast odles... no more ?????????????????????