M62/L61 IAT low input - Boost Forum

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M62/L61 IAT low input
Friday, July 25, 2008 12:59 PM
Ever since I got my ECU reflashed I have been getting a CEL. Each time I checked it at either GM or AutoZone it has said that the IAT sensor had low voltage or input. I have gotten new terminals and made sure that they were crimped real tight and not bent, and the light still came on. All 3 of my local GM Goodwrenches have told me that they can't help me because I installed it my self and didn't pay them to. They won't even look at it for less than 400$.

Has anyone had this problem before? Does anyone have any idea how to fix this?

Re: M62/L61 IAT low input
Friday, July 25, 2008 1:20 PM
Last time i had a problem like this is was the connector. Oil changing place got rough with the airbox and damaged it.



2004 Cavalier. Razzi. (Sold)
1998 Corvette. Some mods.
1992 Typhoon. Lots of mods.
1994 Civic VX 44MPG
Re: M62/L61 IAT low input
Friday, July 25, 2008 6:17 PM
Same thing happened to me. I can tell you what it is:

When you wired in the T-Map you eliminate the stock IAT sensor, somewhere in that new wiring there is an issue. Its only 2 wires but for whatever reason there is a break there. I got pissed off with the connectors so I cut them off and hard wired them, soldered and shrink wrap. It turned out that I had the IAT wires reversed. You should read the directions one more time and look at the colors, the guy I had helping me with the wiring was a mechanic for 20 years and he reversed them. If the wires are reversed it will throw that code. The other option is the conector. The last option would be a bad T-Map sensor.

Good luck.




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Re: M62/L61 IAT low input
Saturday, July 26, 2008 9:52 AM
Okay, according to the first edition ecotec build book (same book Pace took the instructions from) black goes into location B. According to the instructions that came on the cd with the kit black goes into location A. So which is it?
Re: M62/L61 IAT low input
Saturday, July 26, 2008 2:03 PM
Ill check my car in a few minutes




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Re: M62/L61 IAT low input
Saturday, July 26, 2008 2:25 PM
So I cut my connector off, what I have is:

brown wire to light brown wire
Black wire to red wire

Since your only dealing with 2 wires what you might want to do is reverse them, clear the code, and see if it comes back.




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Re: M62/L61 IAT low input
Wednesday, July 30, 2008 11:54 AM
Thanks Gameover, so far it hasnt come back
Re: M62/L61 IAT low input
Wednesday, July 30, 2008 7:34 PM
Sweet dude, good luck with the car!




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