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whew! many troubles with the MAT. help?

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Old Jul 5, 2004 | 10:11 PM
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whew! many troubles with the MAT. help?

ok so i installed my edelbrock performer TBI today.. and after all troubles.. yes the rear china wall leaks oill.. badly.. ok so i get to pull that off in a few minutes to redo it all..

but also driving around today to test it.. i get an SES light.. so i take reading and i get codes 22,25,33,42 . 22 is MAT temp lo, 25 is MAT temp hi, 33 is MAP volts hi/vac lo and 42 is the EST.

can someone tell me what is going on here?
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Old Jul 5, 2004 | 10:15 PM
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Did you re-connect everything correctly? Sounds like you have some stuff crossed or left un-hooked. Did you plug the MAP back into the rear of the TBI unit? Did you set the timing correctly?
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Old Jul 5, 2004 | 10:23 PM
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Re: whew! many troubles with the MAT. help?

Originally posted by TraviZ
but also driving around today to test it.. i get an SES light.. so i take reading and i get codes 22,25,33,42 . 22 is MAT temp lo, 25 is MAT temp hi, 33 is MAP volts hi/vac lo and 42 is the EST.

can someone tell me what is going on here?
I believe that you are slightly mistaken with code 22 there. It really means Throttle Position (TPS) Sensor circuit (Signal Voltage Low). Code 23 means MAT Temp (Low Temp Indicated) and I don't really believe that you will have code 23 & 25 both flashing at the same time.

Last edited by Trickster; Jul 5, 2004 at 10:26 PM.
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Old Jul 5, 2004 | 10:57 PM
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From: Woodland, CA
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Engine: L33 5.7
Transmission: T56
Axle/Gears: Stock IRS
you are correct, it is codes 23, 25, 33, 42.

and yes i got all 4 today at once..
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