94 eb explorer runs cool
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Joined: May 2002
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From: Santa Rosa US
94 eb explorer runs cool
my 94 eb explorer 5 speed runs cool on the temp gage. my gas mileage has fallen off as well--but it may be due to the lousy gas mixes they have in california.
i suspect it is the thermostat running open all the time. anything else i should consider? the sending unit?
is the gas mileage related to this? i have low miles on it--62k.
thanks
i suspect it is the thermostat running open all the time. anything else i should consider? the sending unit?
is the gas mileage related to this? i have low miles on it--62k.
thanks
Elder User
Joined: Aug 2001
Posts: 942
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From: South Texas
94 eb explorer runs cool
[updated:LAST EDITED ON 24-May-02 AT 11:42 PM (EST)]I had a thermostat stick open on my 91. Didn't realize it was stuck till I drove into a blue norther and could not get any heat.
It will affect your mileage also. If computer does not sense engine heating up it will remain in a closed loop mode and run the engine fuel mixture rich. Replace the thermostat, disconnect the battery to clear the computer, then drive normally and let the computer re-learn the engine.
Dialtone
It will affect your mileage also. If computer does not sense engine heating up it will remain in a closed loop mode and run the engine fuel mixture rich. Replace the thermostat, disconnect the battery to clear the computer, then drive normally and let the computer re-learn the engine.
Dialtone
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From: Santa Rosa US
94 eb explorer runs cool
What is involved with changing the thermostat? How much has to come out before you can get to it? A quick look suggests the radiator etc needs to come off--is that the case?
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From: South Texas
94 eb explorer runs cool
I have changed mine out several times and NEVER removed the radiator to do it. Thermostat is behind upper hose neck on front of engine. It has 3 metric screws (10MM I think) holding the neck flange in place, one of which is difficult but not impossible to get at. Remove the upper radiator hose and the serpentine belt to allow better access. Use a 1/4 drive socket set with a flex joint and the job is easier than using a 3/8 drive set. Be careful not to cross-thread or overtighten screws when you reinstall the neck. The metal is aluminum and strips out easily. If you strip the threads, it will be necessary to drill, tap and install heli-coil thread repair kits to the holes (not an easy job by any means).
Dialtone
Dialtone
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From: USA
94 eb explorer runs cool
A tip for you when you get to actually changing the thermostat. Some thermostats have a small hole in the outer part. If you purchase one that does not have this feature, install one. Use a 1/16 or 3/32 drill bit and place hole in the outer area of the body. Next when you install it in the vehicle make sure it is at 12:00 in the housing. This will allow air to bleed out of the engine block when you fill up the radiator with coolant. Unlike mine which I let the dealer put in (was too busy myself) and I am assuming that there is no bleed hole in the one in my Explorer. When I changed coolant last fall it took quite a long time to get all the air out of the engine block.
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