Strange overheating problem....
#2455748
02/22/18 06:54 PM
02/22/18 06:54 PM
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Joined: Nov 2006
Posts: 4,670 Star Idaho
67vertman
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OP
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Joined: Nov 2006
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It just started yesterday, and the again today.
1998 Dodge Ram 1500 5.7, it only overheats in the mornings, it has been cold lately, 28-32 degrees, it runs fine on the highway, a little warmer than normal, but not bad. Come off highway and the temperature really goes up. On the return trip home 50-60 degrees, still runs a little warm but does not over heat.
Its not low on fluids and I run a 50/50 mixture for radiator fluid.
New radiator six months ago, and I am changing out the thermostat today. It does not have an electric fan
My other thoughts is it could be water pump related?
Any other suggestions/thoughts?
My Monster are real!
Living within your means makes life pretty easy.
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Re: Strange overheating problem....
[Re: poorboy]
#2456045
02/23/18 11:17 AM
02/23/18 11:17 AM
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Joined: Jan 2003
Posts: 43,458 Round Lake Beach, Illinoisy
Rhinodart
Rhinotruck
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Rhinotruck
Joined: Jan 2003
Posts: 43,458
Round Lake Beach, Illinoisy
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How is the heater, good hot heat?
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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Re: Strange overheating problem....
[Re: 67vertman]
#2456126
02/23/18 02:15 PM
02/23/18 02:15 PM
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Joined: Nov 2006
Posts: 4,670 Star Idaho
67vertman
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Thanks guys, "5.9 right? Being a 98? I would suspect possible fan clutch," Yes 5.9 (lol) I was think fan clutch as well. over 300,000 miles and never replaced. Poorboy, I have checked all toughs things Thats is what leading me to believe that the thermostat may have gone bad. Rhinodart, How is the heater, good hot heat? Good point, I will check it out. I didn't get a chance to pull the thermostat yesterday, will do so today. It just seems strange to me that it is worse during the cold mornings then the warmer afternoons.
My Monster are real!
Living within your means makes life pretty easy.
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Re: Strange overheating problem....
[Re: 67vertman]
#2458665
02/28/18 12:56 AM
02/28/18 12:56 AM
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Joined: Nov 2006
Posts: 4,670 Star Idaho
67vertman
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OP
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Posts: 4,670
Star Idaho
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Sorry for the late reply guys, I got called away for work.
I pulled the thermostat and tested it, works fine. pressure tested they system and radiator mix (my friend Al, let me borrow his testers), no leaks and fluid is at a 50/50 mix. Checked the inside of the cab for leaky heater core, no leaks. It really had me scratching my head.
Decide to check all the other fluid levels. Pulled the oil dip stick....down well over two quarts, not good. Decided to change the oil and filter, drove it three days no overheating, So, sometimes its the things you are not looking at that cause your problems. Second lesson, start checking the oil level more frequently.
My Monster are real!
Living within your means makes life pretty easy.
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