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· Registered
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Discussion Starter · #1 · (Edited)
Engine Overheat

Hi, this is my first time on the website. Thanks for any help anyone can give me.

I have a 2004 Toyota Highlander V6. When I drive on the highway with AC off the temp stays within normal range and holds steady. When I get off the highway temp stays steady for a minute in stop and go traffic then starts to overheat. I parked the car and open the hood. Both fans are off and coolant is boiling in coolant recovery tank. When I turn on the AC both fans turn on and the temp starts the go down. Not all the way back to normal but close. The fans looks and sounds like on low speed. Does anyone know what the problem is?

· Squirrel Chaser Extraordinaire
'04 Highlander, 3MZ-FE, U151E // '07 Highlander, 2GR-FSE, U151E /// '08 Highlander, 2GR-FE, U151F
323 Posts
Fans die

Had the same problem (slo-mo fans) on my '04, 3.3L V6, around the end of last Summer. Unfortunately, I was on the road, at the time.

To make the story short, even though I found aftermarket fans to get me through my trip, at AutoZone, when I got back home, I bought the complete fan and shroud assembly from NAPA. Never an overheating problem since then.
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