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Old 04-29-2014, 11:54 AM   #1
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Air Cond

I have a 98 Southwind, the engine A/C compressor clutch stopped engaging, figured it was a fuse just like on a regular automobile, however I cant seem to find the fuse. Any help would be greatly appreciated.

The chassis is a P-30 Chevrolet, 7.4L. Attached is a pic of the fuse panel by the driver side under the dash, under the "hood" is another fuse panel but it only has fuses for the coach.
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Old 04-29-2014, 12:03 PM   #2
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Low Freon
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Old 04-29-2014, 12:26 PM   #3
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Low freon
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Old 04-30-2014, 08:01 AM   #4
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OK

Did not know low freon would that but I guess it makes sense so nothing is damaged.

Now I need to find someone who will check it out for me.
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Old 04-30-2014, 08:22 AM   #5
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You can bypass the low-side pressure sensor to help troubleshoot.
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Old 04-30-2014, 08:41 AM   #6
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I like doing my own work (save $) but I don't have any manuals for the chassis, so bypassing the sensor would require some sort of manual or guidance to accomplish.

I was applying regular vehicle logic that there was a fuse that I could check, I have a 2004 Dodge Ram and the A/C stopped working, the clutch was not engaging and found, via a A/C service place, that it was a blown fuse labeled very clearly in the fuse box, cost me $100 for that $1 fuse and its worked great every since.

I can buy the low Freon idea because the A/C was blowing cool but not cold and my plan was to get it serviced until the clutch stopped engaging.

I can read wiring diagrams so I could find the fuse that way.

Does anyone know where to get chassis manuals for a P-30?
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Old 04-30-2014, 09:05 AM   #7
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Quote:
Originally Posted by gary276 View Post
I like doing my own work (save $) but I don't have any manuals for the chassis, so bypassing the sensor would require some sort of manual or guidance to accomplish.

I was applying regular vehicle logic that there was a fuse that I could check, I have a 2004 Dodge Ram and the A/C stopped working, the clutch was not engaging and found, via a A/C service place, that it was a blown fuse labeled very clearly in the fuse box, cost me $100 for that $1 fuse and its worked great every since.

I can buy the low Freon idea because the A/C was blowing cool but not cold and my plan was to get it serviced until the clutch stopped engaging.

I can read wiring diagrams so I could find the fuse that way.

Does anyone know where to get chassis manuals for a P-30?
p30 chassis manual - Bing

Check classicwinnebagos.com
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Old 04-30-2014, 09:24 AM   #8
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To test you disconnect the low pressure sensor jump the 2 wires the clutch should come on I don't have the manuals above but I have the factory GM manuals PM me iTunes want them
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Old 04-30-2014, 10:33 AM   #9
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First do not do that other than a flashing as no freon is a bad thing.

Look at the workings of the ac system and follow the pipes.

There will be a round part with a couple wires on it.

That will be your switch.

You can unplug it and check the switch with ohmmeter.

If freon is under pressure it will be shorted and if not enough present it will be open.

Switch sometimes fails but not often.

Best to have a pro check it and charge it.

If it was r12 and converted to 134 it may be low as 134 seeps through r12 rubber
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Old 04-30-2014, 11:28 AM   #10
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Agree test only this is how you add if low I got the PM I'll send this evening
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