Little background on the car. I just bought it a few months ago and the intake and water pump were leaking. So last month I decided to reseal the intake and repalce the water pump. I also put in new plugs, wires, cap, rotor and coil. Well after a month of blowing it off i finally put it all back together today. Start it up to bleed the air from the cooling system and my ses light comes on.

code 23 for the iat sensor.

I decided to go give it a drive around the block and find out it wont move when i hit the gas. Would a iat sensor cause this? I figure if the sensor is bad and showing 5v it should just make it run rich, but it should still move around at least right? I had the car running for a good 15 minutes, and it seemed to run fine. I didnt notice any misfire while idling.

Just wondering if anyone else has any ideas on this? I was hoping to enjoy a nice cruise tonight with the weather being so nice



--fixed the dtc 23. I left the sensor unplugged under the upper plenum. oops. plugged it back in and tried to drive it. i can get the car to move under light to part throttle but any heavy throttle and it bogs down real bad

 

the iat is a controlled vacuum leak that the ecm uses to maintain a steady idle speed.. sometimes they get gummed up and don't seal, which causes a vacuum leak, which causes the engine to run really lean, which causes it to die..
pull it out and clean it up with some carb cleaner..

i don't know if there is any kind of adjustment to it on your car or if the ecm automatically does it, but i do know that there is a procedure to adjust the one on my 84 Regal T Type...

 

When I had the intake apart i cleaned everything in the throttle body. It seems more like its running rich. I can smell fuel, and i have almost no throttle respones unless its light throttle.

Could timing cause this?

 

Sounds like your timing is off.
Also check your fuel PSI regulator vac line for raw fuel.

 

+1

 

timing was def. the issue. was advanced all the way off the indicator. the line was showing up at about the 3 oclock position. oops.


runs great now though!