Why does my Duramax diesel engine keep overheating?
I and 3 friends with duramax diesels are having same issues. The top radiator hose is collapsing ,preventing flow of coolant to engine. Replacing hose seems to fix problem for a while but need to figure out why the hose is collapsing when engine is under heavy load ,pulling trailer up long grades.
What should the temp be in a tow truck?
However, when I tow an 8000lb 5th wheel on 100F days at 60MPH up 6% grades, mine goes to 240F, the fan comes (around 225 but it takes a several seconds to have an affect) and then the temps drop like a rock to 190-195, the fan goes off and it starts all over again.
How to keep my truck from overheating when towing?
The fan always pulls the coolant temps down but the intake air temps keep slowly rising. I have tried everything suggested and more. I am installing a auxiliary cooler and be done with it. At high loads, the radiator isn’t big enough and there isn’t enough room to install a bigger radiator.
Why does my truck run cooler in SRW?
Be prepared for a ton of reading.Good Luck. I have the same truck in SRW. You are implying it ran much cooler at one time under the same conditions (load, temps, speed, hills). If so, then it might be a clogged radiator (internal or external), the fan slipping, head gasket, etc. Something changed.
I and 3 friends with duramax diesels are having same issues. The top radiator hose is collapsing ,preventing flow of coolant to engine. Replacing hose seems to fix problem for a while but need to figure out why the hose is collapsing when engine is under heavy load ,pulling trailer up long grades.
However, when I tow an 8000lb 5th wheel on 100F days at 60MPH up 6% grades, mine goes to 240F, the fan comes (around 225 but it takes a several seconds to have an affect) and then the temps drop like a rock to 190-195, the fan goes off and it starts all over again.
The fan always pulls the coolant temps down but the intake air temps keep slowly rising. I have tried everything suggested and more. I am installing a auxiliary cooler and be done with it. At high loads, the radiator isn’t big enough and there isn’t enough room to install a bigger radiator.
Be prepared for a ton of reading.Good Luck. I have the same truck in SRW. You are implying it ran much cooler at one time under the same conditions (load, temps, speed, hills). If so, then it might be a clogged radiator (internal or external), the fan slipping, head gasket, etc. Something changed.