200-203F coolant temp needs addressing
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200-203F coolant temp needs addressing
We moved to Myrtle Beach from central Oregon last April. I stored our truck over the summer and have recently started using it again. The ambient air temps here have been 85 to 90F. After 10 miles in this heat, coolant temp rises to 200 sometimes as high as 205. If I keep the AC off and cruise at 55, the temp will drop to 195 or so.
The oil temp stays a steady 10-12 deg higher than the coolant, but as high as 15 deg higher.
When we were in Oregon in the hottest part of the summer, it never went above 192 on a blazing hot day.
So my question is this: Could a partially clogged oil cooler cause these extreme coolant temps? I m thinking a mild system flush with new coolant and thermostat, and cleaning out the radiator fins and see how that works.I have a coolant filter installed, but have 185K miles with what I believe is original coolant.
I've read a few of the threads about oil cooler changing..not sure if I have the tools needed to pull that off.
Thanks for any suggestions,eh?
Brad in Myrtle Beach,SC.
The oil temp stays a steady 10-12 deg higher than the coolant, but as high as 15 deg higher.
When we were in Oregon in the hottest part of the summer, it never went above 192 on a blazing hot day.
So my question is this: Could a partially clogged oil cooler cause these extreme coolant temps? I m thinking a mild system flush with new coolant and thermostat, and cleaning out the radiator fins and see how that works.I have a coolant filter installed, but have 185K miles with what I believe is original coolant.
I've read a few of the threads about oil cooler changing..not sure if I have the tools needed to pull that off.
Thanks for any suggestions,eh?
Brad in Myrtle Beach,SC.
Cargo Master
Joined: Oct 2003
Posts: 2,833
Likes: 4
From: Jefferson, Iowa
A clogged oil cooler will not raise coolant temps. I would not run a coolant flush chemical unless you are ready to do your oil cooler. Have you scanned for codes? Could be a failed fan clutch. I personally would pull the radiator and power wash it and the intercooler. I have seen these get pretty plugged with crap over time.
Fleet Mechanic
Joined: Nov 2008
Posts: 1,443
Likes: 9
From: South Alabama
200 is not bad. Some strive for that as optimum operating temp. One company offers a 200 deg. Thermostat. The 10 - 12 up to 15 is a concern but not damning. Over 15 new cooler is in your future. Not flushing system for 185,000 miles with original ford gold caused this. I made the same mistake for 165,00 miles mine ruptured and created a mess in cleaning out system. Do not flush until you are ready to replace cooler, then flush well and replace cooler. A few hand tools, sockets, torx bits nothing special and you can do it yourself. Diesel Tec Ron (rip) has a step by step video on YouTube that was the best thing I found to use.
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waumpuscat
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Nov 10, 2011 08:41 PM
