LT1-LT4 Modifications 1993-97 Gen II Small Block V8

code help????

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Old 03-19-2011, 09:21 PM
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Default code help????

car sputtered a couple times while taking an evening cruise with the family. got home and hooked up my datamaster to it and it gave me a code 23: MAT low, and a code 48: MAF system fail. any idea what would cause this? recently had to pull the intake and pulles wires and such out of the way to repair things, put it all back and been driving it over a month. any advice is welcomed and appreciated.
Old 03-20-2011, 02:05 AM
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This thread helps me a lot when I have dtc's
https://ls1tech.com/forums/lt1-lt4-m...eshooting.html

23 is the IAT, intake air temp sensor, its prolly a faulty sensor or wiring
As far as the maf sensor, it could be bad or the wiring
Old 03-20-2011, 11:17 AM
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http://www.mifbody.com/DTCs/DTC%2048.jpg
http://www.mifbody.com/DTCs/DTC%2048_2.jpg

Try this diag out and see if you can track down the issue or not.
Old 03-20-2011, 11:54 PM
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very funny, but makes me feel very stupid for asking before i looked myself.... my intake air temp sensor was unplugged.... not sure how that happened, but seems to have fixed the problem. thanks for the help guys.



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