The resistance value is just a guesstimate but it's nice to have a second test to verify your findings. Remember to check for a short to ground too, not just a short between the two termials.
These coils have such an extremely low failure rate, I would head to a salvage yard for a good used one. Some yards will only sell the complete compressor. They might have a core return unit you can pull a clutch from. Some yards will remove the clutch from the compressor for you. They might pull your old one off too or they might borrow / rent you the puller. I visted 11 of 16 "Pull-A-Part yards last summer. Pay a buck admission, grab a wheelbarrow, throw your tool box in it, and have fun. Parts are REAL inexpensive. That chain of yards is in Georgia, Alabama, Kentucky, Tennessee, Indianapolis, and other states east of those places. The are kept very clean and well-organized. I got a liftgate and sliding door for my rusty trusty '88 Grand Caravan for arounf 90 bucks for the pair. Similar yards around St. Louis think their parts are made of gold, and they charge accordingly. One guy wanted $250.00 for just the liftgate.
I just checked the price list from Pull-A-Part. An entire compressor sells for $14.35 without a warranty, $18.22 with a warranty, and $5.08 core charge for your old one. Add sales tax and an environmental fee and you're still looking at around 20 bucks, ... Less if you just pull the clutch off.
Friday, June 25th, 2010 AT 3:42 PM