Thermostat

Tiny
SMOKEY19
  • MEMBER
  • 2006 ISUZU NPR
  • 2WD
  • AUTOMATIC
  • 104,000 MILES
My trucks temperature goes up when parked but when driving the temperature goes back to normal what does mean
Friday, September 9th, 2016 AT 12:47 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,910 POSTS
It means you're not getting sufficient air flow through the radiator at low speeds. That is due to an inoperative radiator fan. The fan isn't needed at higher speeds when natural air flow is all that's needed.
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Friday, September 9th, 2016 AT 8:39 PM

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