Cooling Issues Troubleshooting help!
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Joined: Nov 2008
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Cooling Issues Troubleshooting help!
Hello All! I have a 1994 Ford F150 and cannot seem to figure out my cooling issue. The truck warms up to the "L" in normal and will stay there and not get cooler. Sometimes on long uhphills it will be a bit warmer. It won't overheat but is running too warm.
I have replaced to thermostat to no avail so I tried my radiator as it was the original w/ 230k and it runs at the same temp w/ both new components. My next suspicion is a new fan clutch. Can a faulty fan clutch really make this truck run so warm?
Thanks in advance,
adam
I have replaced to thermostat to no avail so I tried my radiator as it was the original w/ 230k and it runs at the same temp w/ both new components. My next suspicion is a new fan clutch. Can a faulty fan clutch really make this truck run so warm?
Thanks in advance,
adam
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
A fan clutch is only going to keep your truck cooler when moving very slowly or not moving at all. Anything over about 30 mph and you don't even need a fan at all.
It could be your temp gauge or sender. Can you temporarily hook a mechanical temp gauge up to it and see what the temp really is? The L in normal is really hot, I suspect you're not getting an accurate reading.
It could be your temp gauge or sender. Can you temporarily hook a mechanical temp gauge up to it and see what the temp really is? The L in normal is really hot, I suspect you're not getting an accurate reading.
Lead Driver
Joined: Nov 2002
Posts: 9,557
Likes: 44
From: Concord, NC
In the winter, my truck sits right on 192 (motorcraft thermostat from dealer) during highway driving and fluctuates between maybe 185 and 195 in city driving. Summer time it runs between 195 and 200 pretty steady.
Elder User
Joined: Aug 2007
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Stock gauges are miss leading.If you have access to an infared heat gun shoot near the sender.Then compare your dash gauge.Then compare upper radiator and lower radiator hose temp.They should be within 6-10 degree.If the split is higher then you have either a plugged radiator or a bad t-stat.If your truck gets real hot fast then i would go for the water pump.In my world i install low pressure gauge in the heater hose to test for a broken vane or shaft on the w/p. Checking with the infared gun is best done when you know the t-stat is open.I have also seen bad body grounds or battery grounds make the gauges go hey wire.
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