Coolant temperature

Tiny
H20SKIER70
  • MEMBER
  • FORD EXPLORER
I have a 1998 ford explorer sport with the 4.0 SOHC V6 engine and I have noticed the the coolant temerature gauge has been getting to the high side everytime I start to drive and the check gauge light comes on. What could be causing my coolant to get so hot?
Monday, November 27th, 2006 AT 3:59 PM

2 Replies

Tiny
CATCH_15
  • MECHANIC
  • 250 POSTS
First and foremost, check your coolant level. Next, when the temperature gets to about 3/4 of the way to maximum, does the coolant fan come on? If it does, it could be that the thermostat is bad and needs replaced.
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Monday, November 27th, 2006 AT 4:02 PM
Tiny
BRUCE HUNT
  • MECHANIC
  • 3,754 POSTS
One is the coolant could be low, another is that the thermostat is failing. Sometimes the thermostat will stick and not open in a timely fashion. Ensure that the vehicle is not losing coolant. If it is, you need to hunt down the source of the loss. A faulty radiator cap can also play havoc with the temp and a system that is corroded will have problems allowing the coolant to flow through the radiator and thus not cool as efficiently as it should.
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Monday, November 27th, 2006 AT 4:03 PM

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