Car has problems starting once car warms up coolant fans come on and check engine light comes on at the same time
Getting trouble code 23 in my 95 z28
Manifold air temp sensor signal too low (MAT)
what could this be? Where to start?
Like always any help is appreciated

 

The description is much clearer on Shoebox's list, because it is specifically for the LT1.

http://shbox.com/1/Dtcs.htm

IAT (intake air temp) sensor is the one plugged into the side if the rubber intake elbow. High voltage, low temp indicated.

http://shbox.com/1/iat.jpg

Sounds like the harness connector may have fallen off. If it’s not that, use Shoebox’s test procedure:

4th Gen LT1 F-body Tech Articles

 

Thanks again injuneer I ended up having an extra intake elbow cleaned up the contact points real good on the sensor and the elbow plugged it back in & now it starts up good as new👍🏼