Overheating and no cab heat
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Overheating and no cab heat
ihave a 2008 5500 dodge ram 6.7 that has made me crasy. the temperture gage will go to overheating and then the heater will shut down and I have no heat. Been to dealer 5 times and they said air pockets. been to mech 5 times and he said air pockets. have change water pump, raditor cap, themostate, and bleed air lines serveral times. will run normal for awhile then overheats and no heat in cab. what can I try
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Joined: Apr 2006
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From: granite falls washington
I dont have a 6.7 but my 12 valve there is a plug on the head next to the T-STAT. It lets the air out.
With truck parked on ramps or whatever get the front end HIGH pull plug fill RAD till AF comes out hole re plug.
you may have to fill heater core by itself first.
With truck parked on ramps or whatever get the front end HIGH pull plug fill RAD till AF comes out hole re plug.
you may have to fill heater core by itself first.
Cummins Guru
Joined: Feb 2008
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From: Sunny Southern California Land of Fruits and Nuts
Most likely your egr cooler is leaking. I have seen several doing this lately, it causes air pocket and engine overheat condition. Pull the egr cross over tube and take a look if egr and cooler are clean no soot. It will look like it was steam cleaned, then cooler is leaking. Put pressure tester on and you will see egr cooler to start filling with coolant.
I just changed one on 5500 last week, owner said truck never ran so good. 
Tell dealer Reference Star case Number: S1118000061 has the info he needs to check.
I just changed one on 5500 last week, owner said truck never ran so good. Tell dealer Reference Star case Number: S1118000061 has the info he needs to check.
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Cummins Guru
Joined: Feb 2008
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From: Sunny Southern California Land of Fruits and Nuts
OK the egr has been removed but did you remove the EGR cooler also? If not then you could still be getting exhaust gases into the cooling system.
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Joined: Feb 2014
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From: nj
ihave a 2008 5500 dodge ram 6.7 that has made me crasy. the temperture gage will go to overheating and then the heater will shut down and I have no heat. Been to dealer 5 times and they said air pockets. been to mech 5 times and he said air pockets. have change water pump, raditor cap, themostate, and bleed air lines serveral times. will run normal for awhile then overheats and no heat in cab. what can I try
Registered User
Joined: Feb 2014
Posts: 3
Likes: 0
From: nj
Most likely your egr cooler is leaking. I have seen several doing this lately, it causes air pocket and engine overheat condition. Pull the egr cross over tube and take a look if egr and cooler are clean no soot. It will look like it was steam cleaned, then cooler is leaking. Put pressure tester on and you will see egr cooler to start filling with coolant. I just changed one on 5500 last week, owner said truck never ran so good. Tell dealer Reference Star case Number: S1118000061 has the info he needs to check.
I just changed one on 5500 last week, owner said truck never ran so good. Tell dealer Reference Star case Number: S1118000061 has the info he needs to check.Thats great and all but i have the same problems and i did egr delete
Registered User
Joined: Feb 2014
Posts: 3
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From: nj
ihave a 2008 5500 dodge ram 6.7 that has made me crasy. the temperture gage will go to overheating and then the heater will shut down and I have no heat. Been to dealer 5 times and they said air pockets. been to mech 5 times and he said air pockets. have change water pump, raditor cap, themostate, and bleed air lines serveral times. will run normal for awhile then overheats and no heat in cab. what can I try
hello bulldozer did u ever fix ur truck
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