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  1. #1
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    Default puzzling pickup problem

    yesterday evening my wife and i were driving home with a load of fresh horse manure in the pickup truck when the oil temp light came on. well at first i thought the oil level was low so i pulled over and checked to be sure there was oil but now i realize that it is the oil temp light that came on. this is a 99 f-150 with the v6. so we continued driving and then i saw that the temperature gauge was on hot. pulled over again and shut it down and waited a couple. we started up again and it had cooled down a bit. so we got home without the truck exhibiting and of the symptoms you might look for in vehicle that is running way too hot. no burning smell. no coolant smell. no excessive blast of heat when i lifted the hood. when it cooled down i checked the radiator plastic tank and it was empty. i put water in. so now i finally got around to running it to try to get it to repeat the incident but it didn't happen.
    do you think its possible that this occurred because of insufficient coolant? i will check the level again when it cools down a bit since i just ran it. must be a slow coolant leak somewhere?

  2. #2
    Silver Member amaxwell's Avatar
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    Cub Cadet-Yanmar ex450 -Ford 1300-Mahindra 2415

    Default Re: puzzling pickup problem

    Quote Originally Posted by randy41 View Post
    yesterday evening my wife and i were driving home with a load of fresh horse manure in the pickup truck when the oil temp light came on. well at first i thought the oil level was low so i pulled over and checked to be sure there was oil but now i realize that it is the oil temp light that came on. this is a 99 f-150 with the v6. so we continued driving and then i saw that the temperature gauge was on hot. pulled over again and shut it down and waited a couple. we started up again and it had cooled down a bit. so we got home without the truck exhibiting and of the symptoms you might look for in vehicle that is running way too hot. no burning smell. no coolant smell. no excessive blast of heat when i lifted the hood. when it cooled down i checked the radiator plastic tank and it was empty. i put water in. so now i finally got around to running it to try to get it to repeat the incident but it didn't happen.
    do you think its possible that this occurred because of insufficient coolant? i will check the level again when it cools down a bit since i just ran it. must be a slow coolant leak somewhere?
    Water pump leaking ??????????

  3. #3
    Veteran Member RobertBrown's Avatar
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    Florida
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    Bolens G192/TS1910 Ford/New Holland 1920

    Default Re: puzzling pickup problem

    Is the radiator fan working correctly?
    You said oil temp light?
    Typically the oil light is oil pressure and the temp is water temp.
    Did you check the oil?

  4. #4
    Super Star Member brin's Avatar
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    Georgia - Mt. Vernon by The Store just 5 miles east and right by the big oak tree then to the creek.

    Default Re: puzzling pickup problem

    Until you get it figured out I would sure travel with a few gallons of coolant or water in the back of the truck ...just in case...
    Bob

    WORRYING does not take away tomorrow's TROUBLES, it takes away today's PEACE.


    NH - TC-29 , FEL, Bush hog, Bush hog brand finishing mower, Post hole digger, 6' Back blade, sub-soiler, Pallet forks, 20KW PTO Generator , 21 hp Murray Mower
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  5. #5
    Elite Member
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    1949 farmall, 1961 Fordson Dexta, 1986 Duetz Allis, 2001 Kubota.

    Default Re: puzzling pickup problem

    Puzzling pickup problem... I was thinking of something else until I saw the word wife?

    mark
    red tractor
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  6. #6
    Bronze Member
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    don't

    Default

    I had a very similar problem which caused much consternation before I could figure out that I had a very small leak in my heater core. Over time I developed a small air bubble that would sometimes form on one side of the thermostat preventing it from operating correctly. I'd refill the coolant tank and be fine for a while but then I would overheat even though I had coolant. I finally burped the whole rig - left the radiator cap open and just kept letting it spill over and added more water - until I worked all of the air bubbles out. It took a while, but it doesn't happen so long as I stay on top of my coolant level.

  7. #7
    Elite Member
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    Knoxville, TN
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    Bobcat CT225

    Default Re: puzzling pickup problem

    Quote Originally Posted by jomar215 View Post
    I had a very similar problem which caused much consternation before I could figure out that I had a very small leak in my heater core. Over time I developed a small air bubble that would sometimes form on one side of the thermostat preventing it from operating correctly. I'd refill the coolant tank and be fine for a while but then I would overheat even though I had coolant. I finally burped the whole rig - left the radiator cap open and just kept letting it spill over and added more water - until I worked all of the air bubbles out. It took a while, but it doesn't happen so long as I stay on top of my coolant level.
    That's funny. I have this exact same problem with my Jetta. I have had it at the mechanic twice and he swears he can't find a leak, but every so often, my coolant reservoir is empty. I wonder if that's it.

  8. #8
    Epic Contributor Bird's Avatar
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    Default Re: puzzling pickup problem

    Both brin and jomar215 mentioned the things I'd check; fan clutch and heater core. I used to have one of those 1999 F150s with the V-6. Never had those problems with that truck, but I've seen it on others.
    Bird

  9. #9
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    Default Re: puzzling pickup problem

    i'm for sure going to bring some additional coolant/water mix with me. i read that you have to take the dash board apart to replace the heater core but the part itself is pretty cheap. if the heater core is leaking some will it drip to the ground while the truck is parked? the fan is working. we'll see how well it gets us to the farmers market tomorrow morning.
    mark-sorry to disappoint. wife doesn't approve of any pickup but the truck.

  10. #10
    Epic Contributor Bird's Avatar
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    Default Re: puzzling pickup problem

    I'm not real sure on that model, but I think it would not drip to the ground. A slow enough leak can evaporate before it runs down and drips on the ground, and some heater cores (I suspect yours) will leak onto the floor/carpet inside the truck on the passenger side if the leak is big enough instead of outside. And of course at this point I guess we're not at all sure that's your problem.
    Bird

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