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bad gm iat sensor?

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Old Dec 9, 2010 | 02:12 AM
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From: ma
bad gm iat sensor?
My iat is logging straight 240deg in evoscan all the time, from time to time it will go to 50deg but nothing in between. Anyone know how to test it I have a multimeter but cant find what to test for.
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Old Dec 12, 2010 | 08:57 PM
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Old Dec 12, 2010 | 10:02 PM
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Have to ask, are you logging the correct address? You aren't logging the default MAF IAT address are you?
Last edited by razorlab; Dec 12, 2010 at 10:05 PM.
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Old Dec 13, 2010 | 07:14 AM
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Yes I am, thought thats what you used to log it with the spoolinup harness. I have the iat -> mat set to 0x03.
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Old Dec 14, 2010 | 12:05 PM
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Old Dec 15, 2010 | 01:17 PM
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Anyone?????
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Old Dec 15, 2010 | 02:14 PM
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See post #3 above , then see item #2 in the first post here:

https://www.evolutionm.net/forums/ec...y-patches.html

Then see:

https://www.evolutionm.net/forums/ec...e-logging.html
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Old Dec 15, 2010 | 02:32 PM
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I read all that, thats for logging iat threw the fuel temp input. With the spoolinup harness Im using the mat for the iat.
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Old Dec 15, 2010 | 02:45 PM
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Originally Posted by 3gEclipseTurbo
I read all that, thats for logging iat threw the fuel temp input. With the spoolinup harness Im using the mat for the iat.
Sorry I must have read right over that.

Ok, so are you using the correct evoscan Eval formula for the GM IAT, or the standard OEM IAT scaling?
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Old Dec 16, 2010 | 10:04 AM
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Im using the Eval formula list in that thread now and it just stays at 195deg....
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