E38 Make Sensors Work Thread

Disassembly, Reassembly, Tools and devleopment. Going deep with Hardware and Software.
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E38 Make Sensors Work Thread

Postby OldSkoolGP » Tue Jun 14, 2022 11:18 am

My Pontiac GTO is now driving around on an E38 computer like it came that way from the factory. Now I want to get some of the sensors the E38 is capable of reading working on my car.

First up is the oil temp sensor. I wired one in and plugged it into in X2-23, but it only returns a constant reading of 32 degrees F. HPTuners has a switch to say look for a real oil temp sensor, but it doesn't seem to work. I'm guessing I'll have to modify something at the hexidecimal level to get it doing what I want. Is there a guide anywhere that says what address ranges control what pins, or vice versa? Or is there maybe a chart of tables that describe address range values that can be set?

Specifications:
GM '06-07 E38 (Serv No. 12597121)
OS: 12607218

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Re: E38 Make Sensors Work Thread

Postby ironduke » Tue Jun 14, 2022 11:56 am

Can't help much if at all really but I had some links saved where I had run into some discussion on this before.. Might help get the ball rolling so to speak..

https://forum.efilive.com/showthread.ph ... tost242012
https://forum.efilive.com/showthread.ph ... nsor-Input
https://ls1tech.com/forums/conversions- ... m-pin.html

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Re: E38 Make Sensors Work Thread

Postby OldSkoolGP » Tue Jun 14, 2022 1:23 pm

I have read these before. This guy is smart, I wish he had documented addresses and hex values he changed.

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Re: E38 Make Sensors Work Thread

Postby hjtrbo » Tue Jun 14, 2022 9:19 pm

It might be possible to get you close. Have you got the hpt file you can attach? There is some unused data blocks above and below that might help nail down the offset in your file from the info that I've got.

Screen shot shows the switch to flick it from TOT to EOT for OS12609099

Screenshot 2022-06-14 211452.png

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