Overheating: 2006 Dodge Ram 1500 5.7 hemi. Please help!

5

Asked by Nov 01, 2016 at 10:07 AM about the 2006 Dodge Ram 1500 Laramie Mega Cab SB

Question type: Maintenance & Repair

I've replaced the thermostat, radiator, water pump, & coolant sensor.   Before I replace the thermostat- the temp would fluctuate every 15 seconds from 1/2 to 3/4 back and forth.  After I replaced the thermostat- it goes to 3/4 and fluctuates a little...but not much.  If anything, it goes up and gets close to the red zone and then back down.  It doesn't increase with speed.  The fan clutch seems to be working.  I do here gurgling sometimes.  I don't see any leaks.  Any help is appreciated!

5 Answers

10

If you've done all the work mentioned, sounds like you have air in the system. When the air gets over the sensor, the air is always hotter than the liquid thus the sensor reads this. Trying bleeding the air out and post results.

1 people found this helpful.
5

I tried bleeding the air. I let it run through several cycles as I added water. It took a lot of water. I turned on the heat and noticed the heat temp goes up and down....it seemed to be hot when the temp gauge was at 1/2 and seemed to cool off as the temp gauge went to 5/8. I'm wondering if its the heater core? I don't see any leaks and the floor board isn't wet. I've also read about a head gasket leak? Thanks for any help.

My truck is doing the same thing. Please can anyone help. I think today I will bypass the heater core. Ray S , El Paso Tx.

10

My truck is the same, replaced everything, fan clutch, water pump, lower radiator hose, radiator, sensor. Please help

10

Ok so far this is what I've figured out. I've replaced the radiator, the thermostat twice and the third one a 180, replaced the radiator cap, the water pump, everything except the heater core. I've been trying to figure out the problem for months. Started out with a coolant flush this summer. First problem, I replaced the coolant with just the normal green stuff. Prestone. WRONG STUFF.......... I spoke with a mechanic and he told me Dodge should take PINK OR ORANGE. So I did a flush again ran for 4 hour trip to make sure I got it good and flushed. Ran water through it, more water through it and more. Really wanted to make sure I had all that green stuff out. I replaced with orange and have not had a problem since. Who knew.......ohh those who read the owners manual, that's who. Honestly, I hope I'm not wrong in saying this but I thought that coolant was coolant. No matter what color. Now after reading up on it I know it is definitely different.

1 people found this helpful.

Your Answer

Ram 1500

Looking for a Used Ram 1500 in your area?

CarGurus has 9,549 nationwide Ram 1500 listings starting at $800.

ZIP:

Dodge Ram 1500 Experts

  • #1
    Dan Connell
    Reputation
    6,960
  • #2
    pudgybear
    Reputation
    6,620
  • #3
    dandyoun
    Reputation
    6,170
View All

Related Models For Sale

Used Ford F-150
2,344 Great Deals out of 215,478 listings starting at $1,300
Used Chevrolet Silverado 1500
1,781 Great Deals out of 149,289 listings starting at $1,495
Used Dodge Ram 2500
147 Great Deals out of 4,934 listings starting at $2,495
Used GMC Sierra 1500
722 Great Deals out of 58,462 listings starting at $1,900
Used Toyota Tundra
478 Great Deals out of 38,526 listings starting at $1,999
Used Toyota Tacoma
439 Great Deals out of 44,078 listings starting at $1,995
Used Dodge Charger
243 Great Deals out of 32,692 listings starting at $1,800
Used Ford F-250 Super Duty
374 Great Deals out of 42,218 listings starting at $1,600
Used Dodge Dakota
68 Great Deals out of 3,085 listings starting at $1,800
Used Chevrolet Colorado
295 Great Deals out of 41,685 listings starting at $1,900
Used Nissan Titan
254 Great Deals out of 22,942 listings starting at $1,995
Used Ford Mustang
270 Great Deals out of 37,084 listings starting at $2,150
Used Dodge Ram 3500
74 Great Deals out of 2,162 listings starting at $5,980

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.