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Second open clutch coil

medium1 on Sat May 22, 2010 4:43 PM User is offline

Year: 2000
Make: saturn
Model: sl2
Engine Size: 1.9
Refrigerant Type: 134

My daughter's Saturn lost another clutch coil. Where is the protection for the coil is there a diode somewhere and does anyone know where I can find a replacement coil for a reasonable price?

HVargas on Mon May 24, 2010 4:05 PM User is offlineView users profile

I am not sure as far as the protection for the clutch goes. How much voltage is the clutch seeing? As far as a clutch available, I don't have the clutch or coil available alone. It has to come as a whole new compressor unit.

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iceman2555 on Mon May 24, 2010 6:12 PM User is offlineView users profile

What test have been performed to determine exactly what is wrong with the clutch? What exactly is happening to the clutch? Post additional information and perhaps we can supply a more definitive response.

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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

Dougflas on Mon May 24, 2010 6:43 PM User is offline

the diode you speak of is usually to protect the vehicle electronics from the clutch magnetic field breaking and making.

medium1 on Mon May 24, 2010 8:20 PM User is offline

Quote
Originally posted by: iceman2555
What test have been performed to determine exactly what is wrong with the clutch? What exactly is happening to the clutch? Post additional information and perhaps we can supply a more definitive response.

medium1 on Mon May 24, 2010 8:26 PM User is offline

Quote
Originally posted by: iceman2555
What test have been performed to determine exactly what is wrong with the clutch? What exactly is happening to the clutch? Post additional information and perhaps we can supply a more definitive response.

The coil is open just like the first one did 2 years ago. The voltage to the coil is a little over 12 volts. The first coil lasted 7 to 8 years the second came from a junk yard but I have never had a coil go bad in any other car in my family over 50 years. The system has never been open or had any other AC service, not bad for a 10 year old car.

iceman2555 on Mon May 24, 2010 9:36 PM User is offlineView users profile

Has the resistance of the clutch coil been tested? Has the ground side circuits been tested? Has a voltage drop test been performed?
Two similar failures begs for more diagnosis procedures.
Not having the system serviced for 10 years is not a bragging issue. AC systems should be serviced periodically to prevent possible catastrophic failures. The number one cause of compressor failures is lack of sufficient refrigerant to maintain lubricant flow. Service for this issue alone could prevent a vast majority of the system failures the average shop encounters each year. Unfortunately most do not address the AC system until it fails to operate correctly. The modern AC system may require extensive ( read as costly) repairs to return the system to max performance levels.
However after some thought...a few seconds at least....it is a good thing that most do not attend to their systems.....keeps me busy each year.
Thanks....very much.

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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

NickD on Tue May 25, 2010 6:38 AM User is offline

Visualize a long piece of magnet wire with two terminals connected to each end, that's a total of just two connections, either soldered to the terminals or spot welded with a piece of silver solder ribbon between the wire and terminal. Wire is wound loose and random, not varnish impregnated, generally just tied and slapped in. A nick in the wire during assembly, not me, caused a hot spot that can burn through over time due to it's greater resistance. Fit into a housing with epoxy as a cover making repairs difficult, but needed to seal out moisture, sometimes that cracks letting in moisture that freezes and causes damage.

First and probably the only step is to polish the terminals, even slight discoloration has enough oxide to prevent a good connection. Unfortunately, getting stuck with a product with a minor defect in it, is much greater than picking the correct lottery numbers, such is life.

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