jasonperry77
Junior Member
- Joined
- Dec 5, 2013
- Posts
- 1
- Reaction score
- 0
- Ram Year
- 2006
- Engine
- 5.9 cummins
im in oregon and we have had a cold few weeks. lows around 15. anyways im looking for some advise. i have my trucks block heater plugged in overnight and in the morning on my way to work i notice my temp guage go up to about the middle of the guage and warm air comes out of the vents. then the guage dips down to almost cold and cold air starts coming out. as i drive the guage goes up and down up to 5 times sometimes getting cold air then warm air. then the guage almost pegs into the red and then it stops in the middle and stops doing that. thermostat? any info would be much appreciated. oh. and i have a 06 2500 with the 5.9 cummins. thanks.