AC/heat

Tiny
ANANDAMCA
  • MEMBER
  • 2000 MERCURY SABLE
  • V6
  • FWD
  • AUTOMATIC
  • 192,213 MILES
My AC blows nothing but hot air. Also, my heat went bad this winter and not sure what's wrong with it, my defroster stopped working also, can anyone help?
Friday, June 19th, 2015 AT 5:53 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
We most likely have a freon related issue, but we need to start with checking the pressure in the system to find out if when the compressor comes on the pressure is correct.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

However, we also need to make sure the compressor actually comes on.

If the compressor is not kicking on the we need to jump power to it and find out if the compressor will come on and blow cold air.

If not, then we have a failed compressor. If it does, then we need to dig into the control side as this could be a relay or even a pressure sensor issue.

So, let's start with this info and go from there.
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Wednesday, April 27th, 2022 AT 7:33 PM

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