jtaylor0521
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Diesel engine running hot at 58 mph in the mountains
I have a 2005 Monaco Cayman 37' with a 300 hp cummings engine. Yesterday was the first time we have encountered mountains. I was running in 5th gear at 58 mph up and down the hills on I40. I noticed it was runing hot, over 200 degrees for awhile the it really started to heat up until the check engine light came on. I stopped and checked everything and it all checked out and the engine cooled down, so we started out again, watching the temp gauge. When it started to heat up again I down shifted to 4th and ran at 53 mph. The engine cooled of to 200 and I had no more temp issues. My question is: How fast can I run in 4th without causing problems. The RPMs are 2200 at 53 mph in 4th gear. Is it normal to run hot in the mountains. BTW the outside temp was 85 degrees.5.4KViews0likes22Comments
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