Failing Transaxle or PCM? - Page 3 - Taurus Car Club of America : Ford Taurus Forum
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post #21 of 49 (permalink) Old 06-09-2019, 12:21 PM Thread Starter
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Replacing the 15A fuse appears to have fixed the problem—time will tell. Automender12345, you did an awesome job! Thank you so much.
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post #22 of 49 (permalink) Old 06-09-2019, 06:30 PM
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The fuse was not the problem but an outcome of something else wrong. If fuse blows again then it is troubleshooting time. I would start at 02 sensor wires touching hot exhaust and maybe a bad AC clutch coil. From there, there could be a chafed wire harness and hopefully not bad solenoid wires internal in the trans valve cover.
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Last edited by Automender12345; 06-09-2019 at 06:36 PM.
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post #23 of 49 (permalink) Old 06-11-2019, 10:48 AM Thread Starter
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Fuse 28 (15A) blew again. Ended up being a short in the AC coil.
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post #24 of 49 (permalink) Old 06-11-2019, 01:31 PM Thread Starter
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When the AC compressor clutch coil goes, is it usually caused by compressor failure?
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post #25 of 49 (permalink) Old 06-11-2019, 02:38 PM
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Originally Posted by topgunovrtx View Post
When the AC compressor clutch coil goes, is it usually caused by compressor failure?
I have had 2 cars fail. Compressor fine, clutch rubber springs fail and then drag the clutch, heat cooks the bearing. In my cases I caught it in time and replaced the clutch/pulley and saved the coil.


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post #26 of 49 (permalink) Old 06-11-2019, 09:41 PM
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When the AC compressor clutch coil goes, is it usually caused by compressor failure?


No the coil can just fail but it is most likely due to a failing clutch bearing which heats up enough from the bearing failure or the clutch plate rubbing. Have you had a scraping noise from that area.



I have had all three of my Taurus fail a pulley bearing and all of them had a coil that didn't fail but one looked damaged by heat.



Have you inspected the wires to the coil. It may be time to get an multimeter and ohm out the coil to see if it is shorted. I have a spare coil to ohm for a comparison if you need the info.
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post #27 of 49 (permalink) Old 06-11-2019, 09:54 PM
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No the coil can just fail but it is most likely due to a failing clutch bearing which heats up enough from the bearing failure or the clutch plate rubbing. Have you had a scraping noise from that area.



I have had all three of my Taurus fail a pulley bearing and all of them had a coil that didn't fail but one looked damaged by heat.



Have you inspected the wires to the coil. It may be time to get an multimeter and ohm out the coil to see if it is shorted. I have a spare coil to ohm for a comparison if you need the info.
It is 3.2 ohms. Which makes for just over 4 amps.


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post #28 of 49 (permalink) Old 06-12-2019, 03:15 AM
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If the pulley wobbles badly enough it can cut into the coil over time. When I did the clutch in my old car I just left the coil because it was fine, but in your case you're probably better off unplugging the coil to disable the A/C system until you can replace the clutch or the compressor.
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post #29 of 49 (permalink) Old 06-12-2019, 09:01 AM Thread Starter
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I’ll probably replace the compressor, since I have 100,250 miles on it. Never any noise or problems with the AC (Motorcraft with BG Fridi-Quiet Lubricant), until this happened. Best AC I’ve ever had.

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post #30 of 49 (permalink) Old 06-12-2019, 10:51 AM
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I’ll probably replace the compressor, since I have 100,250 miles on it. Never any noise or problems with the AC (Motorcraft with BG Fridi-Quiet Lubricant), until this happened. Best AC I’ve ever had.
I had two Bulls, '01 & '03 DOHC's, Both had clutch fail the same week, both OE, 130K and 140K. In a rush had a shop replace the whole thing, got local guy to do the clutch only on the other, one hour labor and ~$70 for parts. The OE compressor and replaced clutch still going 6 years later. The new compressor failed at one year. Guarantee was 30 days.


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