Greg Sharman

Member

• Aug 11, 2017

• #1

According to Nanocom my IAT is reporting way out - reporting -5c when it's more like 20c

If it was a cheap sensor i'd just replace it - but it isn't (£100+!) - so, what effect does it have? - a quick google suggests it causes the ign to retard for cold start - any other effects? is it worth changing? is there a more common sensor that can be used in it's place?

Lots of questions sorry!

Greg

 

Wazzajnr

Well-Known Member

• Aug 11, 2017

• #2

I have noticed some readings from nanocom that are way out.
Is there a problem with the car?

 

Greg Sharman

Member

• Aug 11, 2017

• #3

Don't honestly know yet as hasn't fully adapted since reset.

 

Wazzajnr

Well-Known Member

• Aug 11, 2017

• #4

I would think that if it was working to - 5deg then it would be running like a bag of fertiliser.
I think it is just one of those nanocom readings that don't make sense!
Is it gems or thor? If it's thor, I'll have a look at mine next week when I get home and see what mine reads. I've got a brand new MAF on mine so it should be right.

 

J

johnnyb70

Well-Known Member

• Aug 12, 2017

• #5

This is very common nanocom always reports this temp wrong on gems. Leave it plugged but definitely don't change. The only effect it has is if the temp exceeds 45degrees c or another sensor has packed up ie it's a backup. This sensor is identical on the x300 jag( and 95 96 xjs) so may be a cheaper source but really don't fret. The battery voltage is also reported wrong at 16v
Jb

 

Greg Sharman

Member

• Aug 12, 2017

• #6

Thanks for that gents - will leave as is...