I have tested all of the usual culprits and the only thing that I can come up with is that my iac thinks it's -39 degrees. I have tested the signal wire and the ground and they are both good. Btw the sensor is brand spanky out of the box because I figured it was the problem.

Could anyone please offer some insight into my issue?

 

IAC or IAT? I assume iat, because that reads intake air temp. Iac controls idle flow. While I can assume you mean one thing though, you could have replaced the other. If your iat is new though and still reading -39 then there is an electrical problem somewhere. If you replaced your iac, then you need to look at your iat.

 

Thank you RedRovin', I did mean IAT Sensor, just put it in today.

 

Okay, that's good. Sadly I haven't learned too much about the iat and it's communication with the ecm. The RAVE has little to no information about its operation. I do know that prior to starting my truck, my scangauge says -40 for the temp reading, but once it's established connection it will read normal. Also, if I disconnect it, the number auto jumps to 199. Based on that info, I would guess that your iat is not sending any info to the ecm at all. I would trace back the wires and see if it's grounding out somewhere or cut. Hope that helps

 

I've already tested the wires (good ground and good connection) that's what has me stumped. But my fuel pump went out trying to start her this morning, hopefully just a wire or a relay.

 

What are you using to view intake temp? (Scangauge, ultragauge, etc). Have you had the adaptive values reset? I tried everything with that being my last resort and it worked. I had a 1300 idle before and now at 705.

 

Im using my buddy's snap on modis to check the temp. No I haven't had it reset yet, I need to find a local shop that can do the deed.