The water pump was replaced and now when I turn.

Tiny
ANONYMOUS
  • MEMBER
  • 2003 LINCOLN AVIATOR
  • 170,000 MILES
The water pump was replaced and now when I turn on the compressor the air turn cold even with the temp on hot. In other words the heat goes from hot to coldwhat should I do to fix this
Friday, January 11th, 2013 AT 1:02 PM

2 Replies

Tiny
HMAC300
  • EXPERT
Check the vacuum motors for vacuum whenheat is on. Also check water vavle to see if it is getting vacuum. Lastly check for a vacuum leak it starts underhood. You r water valve may be open then closing causeing no heat
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Friday, January 11th, 2013 AT 2:39 PM
Tiny
HMAC300
  • EXPERT
Forgot to send pic lol.
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Friday, January 11th, 2013 AT 2:39 PM

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