a/c won't engage???
Thread Starter
2nd Gear
Joined: Apr 2004
Posts: 2
Likes: 0
From: Lowell MI
a/c won't engage???
The Air Conditioning on my 98 C5 with electronic / dual zone climate control will not engage. Press the a/c button, it flashes a few times, & nothing. Fan operates though. Just turned 46,000 miles. Thanks in advance for your responses.
Burning Brakes
Joined: Jul 2004
Posts: 1,119
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From: Spring Branch Texas
Originally Posted by Tempted
The Air Conditioning on my 98 C5 with electronic / dual zone climate control will not engage. Press the a/c button, it flashes a few times, & nothing. Fan operates though. Just turned 46,000 miles. Thanks in advance for your responses.
Thread Starter
2nd Gear
Joined: Apr 2004
Posts: 2
Likes: 0
From: Lowell MI
RCK1999:
Thanks for the reply. The outside temp is reading -32F. It is actually in the upper 70's. So, by your reply, it sounds like the sensor is bad. Do you happen to know where this is located? And, is this a relatively easy task of unplugging the defective one and plugging in the new one? Your replies are appreciated.
Thanks for the reply. The outside temp is reading -32F. It is actually in the upper 70's. So, by your reply, it sounds like the sensor is bad. Do you happen to know where this is located? And, is this a relatively easy task of unplugging the defective one and plugging in the new one? Your replies are appreciated.
Burning Brakes
Joined: Jul 2004
Posts: 1,119
Likes: 0
From: Spring Branch Texas
Originally Posted by Tempted
RCK1999:
Thanks for the reply. The outside temp is reading -32F. It is actually in the upper 70's. So, by your reply, it sounds like the sensor is bad. Do you happen to know where this is located? And, is this a relatively easy task of unplugging the defective one and plugging in the new one? Your replies are appreciated.
Thanks for the reply. The outside temp is reading -32F. It is actually in the upper 70's. So, by your reply, it sounds like the sensor is bad. Do you happen to know where this is located? And, is this a relatively easy task of unplugging the defective one and plugging in the new one? Your replies are appreciated.
Drifting
Joined: May 2000
Posts: 1,917
Likes: 3
From: Southern NH
If the external sensor reports less than around 36F, it prevents the A/C from kicking in. The easiest short term fix is to unplug the sensor ( as per directions above). The external temp should default to around 58F which will allow the A/C to work. But check the connector for corrosion since that could cause a short circuit (vs. open) and prevent the temp from defaulting.
Advanced
Joined: Aug 2004
Posts: 57
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I just replaced my ambient temperature sensor on my 98. It should've been an easy fix, but the connector was so corroded that I had to replace it too. The sensor cost around $14 and the pigtail connector cost around $24. Once you replace the part, you have to drive the car for a few minutes (above 40 mph) before the new sensor correctly reads the external temp. Good luck.
