Vehicle overheating

Asked by Apr 23, 2016 at 11:00 AM about the 1999 Dodge Durango 4 Dr SLT 4WD SUV

Question type: Maintenance & Repair

Vehicle overheats, temp goes over 210,
when in slow traffic, stop and go city
traffic. Temp goes down when at hi way
speeds. Have flushed engine, radiator and
new thermostat.

5 Answers

78,375

Check the cooling fan operation, but most of them don't kick on until around 218 to 225 degrees, depending on what the manufacture set it at. That is why a good radiator cap is essential. 210 degrees is still just a little too cool for most fans to kick in.

It has a fan clutch. Am trying to pinpoint whether it's the fan clutch, water pump or radiator. Hoping to get a little help before just replacing parts. Thanks

78,375

When the engine is cold see if you can spin the fan by hand, if it spins fairly free or the fan wobbles on the shaft the clutch is bad, you should look for oily residue anywhere on the clutch. If the whole fan and clutch wobble then the water pump is bad. HTH

Thank you that helps narrow it down. Yes I can turn fan easily by hand. And was leaning towards the problem being the fan clutch. Also it it the easier and cheaper part to replace versus radiator or water pump.

78,375

Yep that's it, replace the clutch and that should take care of it.

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