View Full Version : Cause of Blowing A/C Clutch Fuse Corrected
QB93Z
10-31-2010, 08:21 PM
My 1993 ZR-1 had an A/C problem. The A/C Clutch 10 amp fuse was blown and since it provides power to the A/C Control module, all control and indications are lost.
My plan was to replace the A/C compressor and clutch.
However, after pulling the plenum, I discovered that the problem was a pinched wire to the compressor clutch:
http://i407.photobucket.com/albums/pp152/QB93Z/2010%2010%20Oct%20WMD/DSC03604.jpg
http://i407.photobucket.com/albums/pp152/QB93Z/2010%2010%20Oct%20WMD/DSC03608.jpg
Apparently the wire had been pinched between the plenum and injector housing. After the insulation wore through, the wire was shorting to ground, blowing the fuse.
Easy to fix by removing the lead from the connector and sliding a short piece of shrink tubing over the wire.
Everything OK now.
Aurora40
11-01-2010, 08:02 AM
Nice find, and much easier than opening up the A/C lines!
secondchance
11-01-2010, 08:41 AM
Saved one compressor!? That's great. Sorry I missed out on this get together.
QB93Z
11-01-2010, 09:08 AM
Nice find, and much easier than opening up the A/C lines!
The good news is: I didn't have to disconnect any freon lines.
The bad news is: I had the shop suck out all the freon before the job.
Jim
QB93Z
11-01-2010, 09:10 AM
Saved one compressor!? That's great. Sorry I missed out on this get together.
Scott stopped by (with his Z06). We talked about C4 rear suspension dynamics. We missed you.
Jim
Aurora40
11-01-2010, 10:07 AM
The good news is: I didn't have to disconnect any freon lines.
The bad news is: I had the shop suck out all the freon before the job.
Jim
Ahh, that sucks. I wondered how you were planning on handling that. Apparently, the legal way. ;)
Scrrem
11-01-2010, 06:25 PM
Great find Jim, too bad you had the freon sucked out.
Rich
GOLDCYLON
11-02-2010, 05:57 PM
Great find thanks for the post up
My 1993 ZR-1 had an A/C problem. The A/C Clutch 10 amp fuse was blown and since it provides power to the A/C Control module, all control and indications are lost.
My plan was to replace the A/C compressor and clutch.
However, after pulling the plenum, I discovered that the problem was a pinched wire to the compressor clutch:
http://i407.photobucket.com/albums/pp152/QB93Z/2010%2010%20Oct%20WMD/DSC03608.jpg
Apparently the wire had been pinched between the plenum and injector housing. After the insulation wore through, the wire was shorting to ground, blowing the fuse.
Any difference in performance? Could have caused vacuum or coolant leak if it kept the gasket from sealing.
Any difference in performance? Could have caused vacuum or coolant leak if it kept the gasket from sealing.
It appear's the green AC line was pinched between the compressor and plenum.
QB93Z
11-03-2010, 01:13 PM
Any difference in performance? Could have caused vacuum or coolant leak if it kept the gasket from sealing.
No leaks, I use Jerry's Gaskets. They never leak!
You are right. If it was the plenum to IH, there would have been other problems. I did not install the A/C compressor that is in there now, so I can't really say how it got damaged.
Jim
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