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Truck over heated?

1108 Views 16 Replies 10 Participants Last post by  24valvediesel
I was driving down the road about 60mph and all of a sudden my "check gauges" light come on...I look down and the temp qauge was moving up to 240

I was driving about 20 miles before this with no problems at all...I just dont understand why the temp climbed out of no where so fast

shut the truck down and coasted to the side of the road and let it sit for a min...got out checked the colant resivor, which was full. Started the truck back up and it was at normal operating temp (190) bout 2 miles down the road it started climbing again, so I let off the throttle and it hovered around 215-220 (the mark between 190 and 240) Then once I got back on it it would slowly rise to 240..The first time it happened it just shot up there

Checked for leaks around the water pump, nothing

Any Ideas?? Thanks
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Sounds like the same problem I'm having. Oil from the crankcase vent on the radiator.
 

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maybe ya got a 53 block and its a small crack and water is seaping out. kinda like a gasser if oyu have a pinhole in hte radiator hose it can over heat and sometimes you will never see faulking leak.when the truck is at 190 try to squeeze the top hose if it is solid then you have no leaks but if it is all spongy hten you got a air leak into the system somewhere that is your problem
 

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I'de start with changing your thermostat, cheap and easy:thumbsup:
 

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maybe ya got a 53 block and its a small crack and water is seaping out. kinda like a gasser if oyu have a pinhole in hte radiator hose it can over heat and sometimes you will never see faulking leak.when the truck is at 190 try to squeeze the top hose if it is solid then you have no leaks but if it is all spongy hten you got a air leak into the system somewhere that is your problem
I have a cracked 53 block & have been driving it for about a month now with the crack & the hightst temp I have seen is 201. It may be a sticking T-stat or bad water pump??? Good luck hope you get it figured out
 

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Whle you are overheating, Is the A/C on? Sounds like it might be a fan clutch issue.
 

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I got windows, too, but when it's 110 outside I'll keep the a/c!
The crap that blocks the airflow on the radiator is inside the fan shroud area, search for some pics. If it isn't the tstat start planning to pull the rad and give it a GOOD cleaning. not too tough, just a little time consuming.
 

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Discussion Starter · #12 ·
I donno if its a 53 block...i have been meaning to check but havent got around to it...Ima replace the thermostat tommorow, dont know if thats the problem but wont hurt. then I will check the back of the radiator. thanks for the input guys
 

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Mine is doing something similar if I run at 70 mph 90 ambient temp ac on it goes over 190 and the check engine lite came on once, if I slow to 65 the temp comes down. I do Have 4.11 gears but the truck should be able to run 70 with a small trailer and no load.
 
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