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1989 Dodge Dakota.240 degrees overheating?

Tiny
SCOOTER567
  • MEMBER
  • 1989 DODGE DAKOTA
Engine Cooling problem
1989 Dodge Dakota 4 cyl Two Wheel Drive Manual 105k miles

After replacing a bad water temp guage, my temp guage now reads a constant a 235-240 degrees, but never boils over. Tried another guage, same thing. Hooked up radiator fan to run constantly, made no difference in temp. Should I worry about it on such an old truck?
Roger
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Thursday, April 8th, 2010 AT 8:36 PM

4 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
So long as it doesn't go over and stay above 240 will be OK.
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Thursday, April 8th, 2010 AT 9:19 PM
Tiny
SCOOTER567
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I also replaced the old thermstat with a 192 degree thermostat. Sure looks like it is opening & closing when the temp goes from 240 down to 235 degrees. At what temp could I expect it to boil over & leave me stranded beside the road?
Roger
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Friday, April 9th, 2010 AT 6:34 AM
Tiny
BLUELIGHTNIN6
  • MECHANIC
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May want to try a cheap mechanical water temp. Gauge to see if its even reading accurate. If it is truly at 240 constant then that is a bit warm, running at 260 or higher would most likely boil the coolant
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Friday, April 9th, 2010 AT 11:35 AM
Tiny
SCOOTER567
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That 240 degree reading is with a AZ mechanical guage. My factory installed guage was very erratic & all over the dial.
Thanks,
Roger
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Friday, April 9th, 2010 AT 2:45 PM

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