How true are the Cts readings

[hrlyguy2]

Notice that my temp gauge on my truck said it was running 210 but the Cts said ect was running 170. Big difference there

 

[duramaxdiesel]

Usually the CTS reading are very accurate.

 

[1978steven]

Cts is gonna give you a more accurate reading as it's relaying the info the ECM is seeing, the stock gauge clusters are well known for inaccurate readings. Sounds like it may be time for some t-stats if that was your fully warmed up operating temp..

 

[Harbin_22]

I think they do it on purpose. All the LMM's I have messwd with are the same way. My gauge will be at 210° from the time EFI reads 185° and won't move up until it is above 210°

 

[hrlyguy2]

Thanks.Wasnt sure what the heck was going on
Its been brutally cold .So I let it run about 15 mint before I drive
Just the temp difference between the two I was wondering Wtf