Hvac showing negative numbers
Thread Starter
Heel & Toe
Joined: Sep 2010
Posts: 16
Likes: 0
From: Ocala Florida
Hvac showing negative numbers
I own a c5 1999 the ac works 90% of the time, when it doesn't the ac light flashes and the hvac control shows negative numbers one time it counted from -30 to 2, once the car has been sitting off the ac will start working again this happens about once a week.
I bought a can of freeon 134a that has a gauge to check the pressure of the system it was reading low but acceptable, I charged it up to the highest acceptable pressure but i still have the problem. Any suggestions?
I bought a can of freeon 134a that has a gauge to check the pressure of the system it was reading low but acceptable, I charged it up to the highest acceptable pressure but i still have the problem. Any suggestions?
Burning Brakes
Joined: Jun 2010
Posts: 1,014
Likes: 5
From: Rockwall TX
BO333 is the outside temp sensor
BO365 /BO367/BO446 reference the R side actuator
I would suggest you replace the outside sensor first (the least expensive part),
then check codes again after you reset them.
BO365 /BO367/BO446 reference the R side actuator
I would suggest you replace the outside sensor first (the least expensive part),
then check codes again after you reset them.
Tech Contributor
Joined: Jan 2007
Posts: 19,450
Likes: 1,155
From: Dyer, IN
Even thought the part is cheap, troubleshoot first. It's very common for that connector to become corroded. Inspect the connector closed for corrosion, and make sure you have a good ground, and 5 volts.
Thread Starter
Heel & Toe
Joined: Sep 2010
Posts: 16
Likes: 0
From: Ocala Florida
When I got the car 3 weeks ago I checked under the front bumper and saw a loose connector on that side the fog light was out also I assumed that connector went to the foglight maybe a previous owner disconnected the sensor to get the ac to work.
I will know shortly I am chauffeuring the wife around to garage sales right now.
I will know shortly I am chauffeuring the wife around to garage sales right now.
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