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IAT or MAT sensor
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phallet
New User
| Posts: 1
| Joined: 10/12
Posted: 10/22/12
03:29 PM
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I have an 84 corvette that codes 23 on it which indicates the IAT or MAT sensor. After days of research there is nothing that I can come up with for this sensor. From what I gather this motor (trottle body) was only out for a short time and I can not find information out on this car for the life of me. These parts (IAT or MAT) can not even be found. Is this sensor really in this car? I NEED HELP!
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Posted: 10/22/12
07:22 PM
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autozone covers the crossfire in 3 different sections..
82 corvettes..
84 corvettes
83 firebirds..
you will have to log in and select those models and search around for it...
its been a while since i was under the clamshell of a crossfire C4.. but i don't recall seeing an air temp sensor..
lets take a look around...
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Posted: 10/22/12
07:49 PM
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this is the list of diagnostic trouble codes for the L83 crossfire motors...
can you identify the COMPUTER number 122XXXXX and look in at the PROM numbers... WXYX 1234 post those...
13 left O2 sensor open
14 ECT high temp above 130C
15 ECT low temp below -32C or open
21 TPS volt HIGH.. or idle TPS above 0.9Vdc
22 TPS volt LOW . idle 0.03 0.9 v
not used on crossfire. 23
24 VSS circuit
42 EST circuit
43 ESC
44 02 sensor lean
45 02 sensor rich
51 MEMCAL pcm error
55 REPLACE ECM
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