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Old 10-26-2010, 05:58 PM
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normal running temps? Truck wont warm up

What is the normal running temp for a 7.3? Lately my truck won't get much above 150* and usually it stays at about 149. I have a vegetable oil conversion on it and I thought maybe this could cause it to warm up slower but even after driving for a long time it still stays right around 150, and this is unloaded, both city and hwy. During the summer it would get to about 165 but this was during 110* heat outside, and now its been around 60-80 so I don't see how it could be too cold. And since it won't warm up I can't run it on vegetable oil. Any ideas??
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Old 10-27-2010, 06:37 AM
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Could your thermostat be stuck in the Open position?
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Old 10-27-2010, 07:14 AM
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How could I check this?
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Old 10-27-2010, 11:02 AM
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Really, the only way to be sure would be to take it out and look at it. At that point, you might as well just put a new one back in either case

I'd go get a new one (their not expensive) and put it in, see if it fixed the problem....
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Old 10-27-2010, 11:06 AM
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Quote:
Originally Posted by NoRalPh View Post
Could your thermostat be stuck in the Open position?
thats exactly what is going on,take your thermostat out and you will run at that temp...put you a 195 in there i beleive thats what ford calls for on that year
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Old 10-27-2010, 06:09 PM
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ok thanks guys I read a few things and it doesn't look like too difficult of a job so I'll replace it this weekend.
Thanks
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