I pulled my Firebird out for the season To find very high erratic idling and lots of hesitation in the throttle.

I used a scanner and came up with code 14 (coolant temp sensor indicating high temperature) code 22 (TPS voltage low) code 23 (intake air temp sensor voltage low) and code 34 (MAP/MAT sensor voltage low)

I am confused as I have changed all of these sensors with no change (I have a parts car and they should all work). I am wondering if it all of these codes could be because of some main component issue. It seems weird to me that They all showed up at the same time, and I wiring and electronics is not my strong suit.

Looking for suggestions on what I can try to diagnose my issues and post my progress on this thread.

Thanks! I am new to posting.

 

Have you set the tps voltage to .54 ?
This is done with the blue and black wires.
You should also check the reference voltage on the grey wire. It should be 4.50-5v.
The tps and cts share a common ground. Be sure to check the resistance to ground on both the tps black wire and cts black wire.
34 is for maf low signal, focus on the tps and cts and see if 34 still occurs.

 

http://www.chevythunder.com/tps_code_22.htm