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2003 explorer overheating
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John88
New User
Jun 7, 2011, 8:40 PM
Post #1 of 2
(5864 views)
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2003 explorer overheating
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2003 ford explorer
4.0
92,000 miles
Hello all, for the last 3 or 4 weeks I've been having a problem with my 2003 explorer..at random times usually on the interstate I think..the car overheats goes all the way up to h and says hi temp low oil. My oil is fine. I think i was going 80 or sometimes it happens when I accelerate but I'm not positive what triggers it. I opened the hood and noticed that the coolant got pretty high..but then it receded and cooled off after awhile and then it was fine. I've brought it to Ford but they can't find anything wrong with it..i don't know what I'm doing to make it overheat lol. Any help would be appreciated..thanks.
(This post was edited by John88 on Jun 7, 2011, 8:45 PM)
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jun 8, 2011, 3:30 AM
Post #2 of 2
(5847 views)
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Re: 2003 explorer overheating
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I'll just list out some of the maybe things and questions:
* Is radiator and condenser clear of debris?
* Fan working properly?
* Antifreeze exceeding the 50/50 common recommendation? Won't cool well with too much antifreeze but is needed for corrosion protection if not just to not freeze up in cold weather.
* Have you flushed out cooling system?
* Oil issue: If sludged up oil and heat can do that it may not return to oil pan fast enough??
* Sometimes water pump impeller gets corroded and inadequate.
* Thermostat could be erratic? Guess only a new one would prove that.
__________________
If random like you said and at higher speeds if the air dam isn't in place (they break off too much) air flow would be challenged. If missing, replace it.
Are you talking coolant level reads or looks high at radiator or recovery tank? Either it changes by temp of coolant normally but usually will stay between high and low marks barring extremes.
If losing heater set to hot goes cool on you, you probably have air/vapor in system either from boiling or combustion gasses and if so check for head gasket or upper manifold gasket issues.
Will system hold pressure? If not find out why. Even a bad pressure cap can cause overheating as coolant will boil at a much lower temp and not cool well,
T
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