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1990 Nissan Maxima 1990 Maxima thermostat losing temperture

Tiny
EYEIOFRA1981
  • MEMBER
  • 1990 NISSAN MAXIMA
Transmission problem
1990 Nissan Maxima 6 cyl Wheel Drive Type unknown Automatic 145000 miles

My car heats up pretty quick and it holds the temperature for about 10-15 minutes and the needle on the temperature gauge will drop down to cold and won't come back up. I thought it was happening when I would slow down coming off the interstate, but now it happens when I'm going at a steady pace, too. When I lose the heat, my car feels like it's heavier and the engine is louder. Does anyone know why this might be happening and what I can do to stop it.
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Tuesday, January 22nd, 2008 AT 10:04 AM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Have you checked the coolant level? If it's good replace the thermostat, and pressure test the radiator and cap. Last coolant flush and fill was? If more than 2 years now is good!
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Tuesday, January 22nd, 2008 AT 10:13 AM
Tiny
MAXIELVR
  • MEMBER
  • 2 POSTS
It's either coolant or thermostat. I had the same problem. I changed the thermostat and the coolant and now my car is fine.
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Monday, February 11th, 2008 AT 2:27 PM

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