1997 Chevy Blazer po507,po420

Possible causes for code P0507 are faulty throttle stop screw, stuck IAC valve or throttle linkage, rich or lean fuel system, throttle body bore stuck with foreign material.

The IAC valve is located near the throttle body assembly for the 2.2L engine and on the throttle body assembly for the 4.3L engine. List your specific engine size and I can post diagram.


I would first inspect your oxygen sensors for next code before paying a hefty repair on the cat. converter. To learn how to check an oxygen sensor, follow the link below..

https://www.2carpros.com/how_to/how_to_test_oxygen_sensor.htm


Thanks for using 2CarPros.com!

thanks for telling me too check the oxygen senser before getting catylitic converter you can tell im not a mechanic.now for my engine size its a 4.3 cpi for locateing the iac valve i still cant find it on the car thanks for your help

igot the pic but i cant tell where number two is located,thanks for the pic.

thanks guys for your help and patience ive added you all in my favorites............GOD bless.