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Join Date: Feb 2004
Posts: 3
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944S temp control fuse keeps blowing
Help! My 1987 944S keeps blowing a fuse. The dial that controls the interior temp. and well as the 2 sliders that control where air is directed don't work when this fuse pops. It seems to happen when I try to turn the A/C on--which now doesn't blow cold either. Maybe the fuse blows when the A/C compressor turns on? A new 7.5 fuse lasts no more than a minute. I'm out of fuses and ideas... any suggestions?
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02-23-2004, 06:00 PM
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Join Date: Feb 2001
Location: Viera FL
Posts: 5,642
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You have a short somewhere in your HVAC system (most likely the AC system.)
This can be a tricky one to troubleshoot. Which fuse is blowing? AFJuvat
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Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
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02-23-2004, 06:11 PM
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Join Date: Feb 2004
Posts: 3
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it's a 7.5 fuse in slot #29 in the fuse box. It's labeled Heating and Air Conditioning.
Thanks! |
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02-23-2004, 06:28 PM
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Join Date: Oct 2002
Location: nashville,tn
Posts: 1,124
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I have the same proble with a 85.5 that I take care of.
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86 944 daughters 88 944 step-sons 07 Ranger 4x4 I have tons of spare parts, let me know what you need. |
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02-23-2004, 06:35 PM
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Hey guys,
Did you ever figure this out? I have an 87 S with a new compressor that does the same thing, and I have three different control units and they all blow the fuse when the AC button is activated.
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Current: 87 944S Black/Black, 89 944 Turbo S ANDIAL White/Burgundy, 78 924 Black/Black, 17 Cayenne S, 03 Turbo X50 Aero instagram @mhariush http://stores.ebay.com/Techniker-Parts/ |
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04-25-2012, 06:01 PM
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fyi, been trying to troubleshoot this problem, no luck, but I swapped out the 7.5 fuse with a 10 fuse and it hasn't popped yet and the ac works great. Still trying to find the real problem so if any has any leads let me know.
thanks
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Current: 87 944S Black/Black, 89 944 Turbo S ANDIAL White/Burgundy, 78 924 Black/Black, 17 Cayenne S, 03 Turbo X50 Aero instagram @mhariush http://stores.ebay.com/Techniker-Parts/ |
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05-22-2012, 09:31 PM
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Join Date: Oct 2002
Location: nashville,tn
Posts: 1,124
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It is the magnetic coil in the compressor. It can be changed out with the compressor in the car. If you un-plug the elec connector on the compressor, and read the resistance across the coil, it will be too low. This causes a high amp draw when you apply voltage to the coil.
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86 944 daughters 88 944 step-sons 07 Ranger 4x4 I have tons of spare parts, let me know what you need. |
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05-23-2012, 04:27 AM
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