![]() ![]() Bentley manual seems to think it's the FCM. When I did my testing, as I jumped for the high speed test, the relay clicked and the fans came on. I don't know.I may have two different problems that just surfaced at the same time. I have had two of them to be bad straight out of the box!įrom some other research I've read it could be my refrigerant control valve inside the compressor.my gauges don't fluctuate much when the compressor comes on, it won't produce suction on the low side.they say it can be replaced with the compressor still in the car, just have to have it discharged, open the back and replace, reclose it, pull vacuum and recharge. don't trust those $39.95 FCM regardless of where they come from. So, right now, I've got my on relay system working!. So, I installed the "new" FCM only to learn that the fans worked fine but the AC Clutch would not kick-in. My AC compressor clutch will kick-in with the Old OE FCM but the new fans will not come on. However, I have had issues with two new Fan Control Modules. I admit, I went the China route from eBay. Most folks here swear by OE replacement on the fans. Side note: If the dash fan doesn't work the above test will not work either. So, that would mean that the electrical resistor internal that "consumes" current to provide slow speed is burned out! ![]() If the fans work on high the brushes are okay. ![]() One is ground and the other two are high and low. You can unplug each fan and test to see if brushes or the low speed is the culprit. If not, the low speed aspect is burned out.Or, the brushes are shot. If you turn on the key, turn on the fan on the dash, and press the AC button, both fans out front should come on. The problem is most likely that the low speed on the two fans is burned out. Your compressor is just fine as well as the freon, evaparator, condenser, etc. ![]()
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