AC Not working, clutch not engaging, Solar Sensor errors on BMW Scanner 1.4

katit · #1 05-14-2014, 10:35 PM

All comes down to proper tools. #5 is not hard. It's just 3 bolts that hold your compressor to engine. 2 upfront and one on a back. Pretty easy to get to. I did take them out so I can move compressor little backwards (more room)

Soo.. NO NEED to do this if you have good 90 degree snap ring pliers. First snap ring that holds pulley is almost on top and the one on a coil is little deeper, thats all.

As for locating pin.. Coil have to be oriented in certain position (wires going up) It can rotate. So, there is a small hole in compressor under coil and coil has small pin sticking out that goes to this hole. This is to prevent coil from spinning. Original coil has pin in a proper spot. But eBay replacements do not have it in proper spot and you need to grind it off in order for coil to be flush. But then nothing stops replacement coil from spinning. I was told that it's OK, it won't go anywhere. Worked for 5 years

Attaching pictures of original (white) and eBay (black) coils

diddy0071 · #2 05-14-2014, 10:39 PM

Quote:

Originally Posted by katit

All comes down to proper tools. #5 is not hard. It's just 3 bolts that hold your compressor to engine. 2 upfront and one on a back. Pretty easy to get to. I did take them out so I can move compressor little backwards (more room)

Soo.. NO NEED to do this if you have good 90 degree snap ring pliers. First snap ring that holds pulley is almost on top and the one on a coil is little deeper, thats all.

As for locating pin.. Coil have to be oriented in certain position (wires going up) It can rotate. So, there is a small hole in compressor under coil and coil has small pin sticking out that goes to this hole. This is to prevent coil from spinning. Original coil has pin in a proper spot. But eBay replacements do not have it in proper spot and you need to grind it off in order for coil to be flush. But then nothing stops replacement coil from spinning. I was told that it's OK, it won't go anywhere. Worked for 5 years

Attaching pictures of original (white) and eBay (black) coils

Where did you grind? I can't tell. They both look similar, except the bottom one (original) has what looks like a resistor or chip in it.

katit · #3 05-14-2014, 10:43 PM

Marked pins in red. Picture is before I grind it. On black coil just take this notch off with a wheel, dremel, etc.

On original it's not resistor, it's diode. I think it's optional. I did move it to the new coil, but I hear it's not necessary.

diddy0071 · #4 05-14-2014, 10:48 PM

Quote:

Originally Posted by katit

Marked pins in red. Picture is before I grind it. On black coil just take this notch off with a wheel, dremel, etc.

On original it's not resistor, it's diode. I think it's optional. I did move it to the new coil, but I hear it's not necessary.

Sweet!!! So it looks to be something that isn't too hard! Definitely tackling this when I get the part in.

katit · #5 05-14-2014, 10:54 PM

Yes, took me about 2.5 hours start to finish with breaks. Good thing is that AC driven by separate belt, so even if you didn't finish - just make sure mount compressor back on (3 bolts) and put your fan on and you can drive for couple days..

diddy0071 · #6 05-17-2014, 10:05 AM

Quote:

Originally Posted by katit

Marked pins in red. Picture is before I grind it. On black coil just take this notch off with a wheel, dremel, etc.

On original it's not resistor, it's diode. I think it's optional. I did move it to the new coil, but I hear it's not necessary.

The coil I received looks nothing like yours. did I get the wrong part?

2001 2003 BMW x5 Compressor Coil 97349 10S17C 5GRV | eBay