91 Explorer overheating at idle/in traffic, only when in drive. | Ford Explorer Forums

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91 Explorer overheating at idle/in traffic, only when in drive.

Tony112302

New Member
Joined
September 4, 2012
Messages
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City, State
Simi Valley, CA
Year, Model & Trim Level
1991 Explorer XLT
Hi Guys,

I have a 91 Explorer, 4x4 XLT, v6. It has started to overheat (I won't let it get past the "m" in the word normal on the temp gauge). It usually runs between the "n" and "o," however, I noticed that if I am in traffic, or leave it at idle, it starts running hot. It does not happen in park, and if I rev the engine, it cools down. It also runs hot when going up hill.

I replaced the thermostat and water pump, as well as flushed the cooling system, and it's still doing it. Fluids all look good. Someone told me that it was probably the transmission cooler had failed, but I wanted to get some more input before I picked one up.
 






I'd replace the fan clutch.. You've already changed out the water pump, thermostat and did a flush.
 






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