Idle temp going crazy

Bump it up a bit, if you want a higher temp. Diesel engines need a higher RPM to come up to full temp. The newer ones will pretty much hold it, once it’s gotten there.

If you’re comfortable. Don’t worry about it.

Back in the day, we stuck idle sticks on the throttle in extreme cold. Used them for cruise control too lol

 

Drive it and don’t worry unless it reads wrong in sub zero temps and won’t idle it that’s your heat source

 

No, this is normal. Sun is probably hitting it directly.

 

Lmao. Wait until you park in summer time. They tend to pick up engine heat when you’re parked, it give a false reading because of that

 

Where is the sensor mounted? You’re catching heat from the truck. If you start driving it will likely go back down to whatever the temp actually is.

 

Correct - it will go down once you start driving. I was in Phoenix last summer and my gauge read 127 degrees. It went down to 105 once I was moving.

 

It was probably reading right. 127 is about right sitting cooking on the concrete or asphalt. I see 130's a lot sitting.

Casper is like dead accurate too when I'm moving.

 

If it does it while your driving, you need a new sensor. They’re not that hard to replace, but the company is probably mot going to see it as a priority. This means you’ll just have to get used to it being wrong. On a plus note, you can buy one in the truck stop for about $20-$25. Stick the sensor on the under side of your mirror and velcro the display to your dash.