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Heater problems, car occasionally running hot

Tiny
BJACOB1129
  • MEMBER
  • 2006 SCION TC
  • 1.6L
  • 4 CYL
  • AUTOMATIC
  • 128,100 MILES
Sometimes when I turn my heater on, it blows cold air. When it blows cold air the temperature gauge quickly jumps to 3/4 of the way hot and sometimes to almost hot. My water pump was just changed and there is collant, its full. When the heater is off, the temperature gauge stays in the middle.
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Monday, November 25th, 2013 AT 8:17 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
It sounds like either you are low on coolant or there is an air pocket in the system. Have you tried bleeding the air from the cooling system? Has this problem started since the water pump was replaced?
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Tuesday, November 26th, 2013 AT 6:11 AM

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