BULLDOZER370

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

lovinCTD59

Have you let the truck idle with the radiator cap off untill the thermostat opens? This will take a while...

BULLDOZER370

Have done this also have released air serveral times

bobva

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.

BigIron70

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.

SpeedyWS6

Hopefully it is the egr cooler and not the head gasket.

BULLDOZER370

We have raised the truck up and released air several times. still same problems. the egr has been disconnected and removed. still same problem. head gasket is next step i guess.

BigIron70

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.

quadstar

Did anyone ever figure out what was wrong with this truck? My truck is doing something similar, I was hoping to find someplace to start looking for problems...

Diesel pipeline

Yes I would like to know what it was. I'm having same problems. Has it been fixed?

Girolomo Pace

i have the same problems 08 2500 4x4 smarty jr chip airintake 5"exhaust turbo back. I've changed two thermostats water pump done all sorts of head gasket test and it fine i did EGR delete i don't know what to do either

Girolomo Pace

Thats great and all but i have the same problems and i did egr delete

Girolomo Pace

hello bulldozer did u ever fix ur truck