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Intake Temp


A_Fat_Duck

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Hi guys, been looking through my ECU logs after having both the MAF and IAC die on me a while ago and trying to troubleshoot. I've noticed that the intake air temp is almost always at -40degC but can go occasionally up to -36degC. Anyone else had a problem like this and what could I try to do to fix it? 

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  • 3 weeks later...
56 minutes ago, evowrx said:

Cant help but all the logging ive done with fmic and big turbos has me at ambient thro to +10deg c max.

This is reading negative 40 not plus 40 with a stock turbo and not sure what fmic but it's a decent size. Where is the intake temp sensor on a 99 GC8?

Also not sure if I said but it's reading -40deg c right from the start even with the car sitting around not running 

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3 hours ago, A_Fat_Duck said:

This is reading negative 40 not plus 40 with a stock turbo and not sure what fmic but it's a decent size. Where is the intake temp sensor on a 99 GC8?

Also not sure if I said but it's reading -40deg c right from the start even with the car sitting around not running 

 

Yep got the negatve somethings clearly F***ed. If its a gc8 it should be in the intake pipe post airbox. Might not be plugged in.

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6 minutes ago, evowrx said:

 

Yep got the negatve somethings clearly F***ed. If its a gc8 it should be in the intake pipe post airbox. Might not be plugged in.

2

thought as much.. although the previous owner put a pod filter on so I have no idea what they've done. everything that I can see looks to be plugged in. What does it look like?

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7 minutes ago, evowrx said:

Ovalish black 2 pin plug pretty much under where the airbox sits. Is part of the loom that comes from around the brake booster area.

Just had a look and I cant see anything like that at all, does anyone have a picture of what it should look like and location? 

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5 hours ago, pedro said:

Google it..

I tried that and saw quite a few different ones and it definitely didn't have the actual location of it o.O

1 hour ago, evowrx said:

Thanks @evowrx I'll have a look when I'm done with work 

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4 hours ago, evowrx said:
 

I've got a v5/6 but I assume it's in the same pipe as the 3/4 that you've linked? There's a part of the loom right under that by one of the injectors that looks like it's been messed with and electrical taped again so when I have time I'll try pull it apart and have a proper look as I assume it would have come off of that as it looks like it traces back to the brake booster.

 

Sorry for sounding like a muppet, I've only ever worked on diesels before this O.o

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