squirrelybird

So last week I was messing with my air intake, and I know my MAT sensor is messed up, so i was not surprised when the SES light lit up the next day, and it turned out to be a CODE 23 (MAT sensor low temp. fault). well, since no one seems to stock those things, i've been driving it to work daily and every day when it warms up the SES lights up. Well today i finally pulled the codes again, just in case, and now it shows the 23, but also a CODE 33 (MAP sensor voltage low--pressure low/voltage high), and a CODE 42 (EST circuit grounded [HEI module failure]).

So could the MAT sesor have caused the other two? what exactly does all this low temp this and voltage that mean?/? what should i check or replace??

thanks,
EVAN

6cyl92CamaroRS

I had code 23 and 33 never fixed the 23 but what happend was i had a borken vacume line from my manifold to the MAP sensor so might want to check that out and once i fixed that i had another code that i cant remember than never came back maybe 34 or 24 cant rmeember but check that out.
Mitchell