1997 4.6 overheating
12-20-2009, 06:06 PM
#1
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1997 4.6 overheating
I have a 97 4.6 that hase been overheating the past couple of days. But when I turn the heat on its alright. So i replaced the thermostat and drove it around today but it still overheated. Any ideas of what can be wrong I dont want to spend money replacing parts that i dont have to.
The radiator is probably clogged or one of the hoses has a blockage.
12-20-2009, 06:29 PM
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Did you check the antifreeze and what color was it? If it is brown or dirty, you are going to need to get that flushed. Just in case you didn't do that already. I would also check the radiator for small holes and see if the fan is engaging while it is running. Also might check to see if your water pump is going bad. Hope this helps!
12-20-2009, 08:49 PM
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Was the cooling system low on coolant when you decided to replace the t-stat? Next question is not trying to jack you up, which way did you install the t-stat? Last question, after the t-stat replacement, what type of driving were you doing?
12-21-2009, 03:14 PM
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So I finally found out what i think is the problem with my truck. The fan is never engaging so now im tryin to figure out is what kicks the fan on and off?
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12-21-2009, 05:29 PM
#10
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I see you are in Hawaii, am wondering what the temps are right now. Here in Las Vegas the temps have to be upwards of 110 degrees for my fan to engage.
Something I have found out to be a good rule of thumb to go by with overheating conditions. Overheating out on the open road with higher speeds points towards a radiator problem. Overheating in city type driving and slower speeds points toward the fan clutch. At high speeds the ram air cools the coolant, in slower speeds the fan has to do the cooling so there fore it engages and pulls more air across the radiator.
Something I have found out to be a good rule of thumb to go by with overheating conditions. Overheating out on the open road with higher speeds points towards a radiator problem. Overheating in city type driving and slower speeds points toward the fan clutch. At high speeds the ram air cools the coolant, in slower speeds the fan has to do the cooling so there fore it engages and pulls more air across the radiator.