Another A/C question !
#1
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Another A/C question !
I'm having trouble with my a/c system also ,but not the same as the other topic below. I discovered that the compressor clutch was not engaging so , naturally , the first think I did was to jump across the low press. safety switch . To my dismay , that still didn't make it engage. I do have gauges and so I went ahead and connected the low pressure line and the system does have pressure (about 85 psi) . I decided to hotwire the clutch directly to the battery to see if this was the problem . The clutch engaged this time . I checked the large fuses on the firewall and they were OK. Guys , am I having a problem with the switch in the dash or is it something else ? By the way , once the compr. came on , I did find the freon to be low but the line coming out of the back of the accumulator was getting cold . This system hasn't been touched since new so I'm sure that it'* got to be low after 13 years ! Not bad GM ! Thanks for all input
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I had the same problem on my 93 SSEi...It turned out to be the relay located in the maxi fuse panel under the hood...I replaced the relay and It works like a charm... Hope this helps....Keep us posted.
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Originally Posted by suctoes
I had the same problem on my 93 SSEi...It turned out to be the relay located in the maxi fuse panel under the hood...I replaced the relay and It works like a charm... Hope this helps....Keep us posted.
#6
DINOSAURUS BOOSTUS
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Thanks on the year/model in sig.
Yes, many have found the relay to be malfunctioning over the years. It'* well worth looking at before scanning to see if the pcm is commanding the AC on.
Yes, many have found the relay to be malfunctioning over the years. It'* well worth looking at before scanning to see if the pcm is commanding the AC on.
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Ok guys, I've tried swapping relays around and got nothing . Question : if the system is a little low in freon will it not come on at all or would it at least cycle if the relay was the issue ? I'm thinking it would at least kick on for a few seconds . I've seen on the other posts about scanning the PCM to see if it'* commanding the a/c on . Do I just need a regular OBDII scan tool for this or something else ? As always - thanks for all answers!!!