Darryl&Rita Posted June 17, 2022 Report Share Posted June 17, 2022 I guess that's what I was implying when I insisted on an analog meter. Digital meters won't always differentiate PWM output differences. Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
SuiteSuccess Posted July 22, 2022 Author Report Share Posted July 22, 2022 Update: My A/C is up and running! Thanks to all the suggestions and help. You obviously can teach an old dog some new tricks. For review the fan quit running then after some cursing and manipulating ran normally for a couple of days and quit again. So with some sleuthing based on suggestions above I checked continuity in the “resistor “ (that’s what it’s called if you order one and in YouTube videos). It appeared to be okay. Replacement would have been around $75. I took the fan out and connected to 12 volt at home and fan ran. Hmm! Went back to truck plugged in resistor and metered the two wire connector to the fan. The control module metered 10 volts at low fan speed and incremental increases to 12.4 volts at high speed so I felt pretty satisfied the resistor was good. So I’m thinking, voltage from controller (panel control) seems to be making it to the resistor and variable voltage is coming from resistor to fan, that still points to the fan as the culprit. So plugged in old fan. Tries to run but stops. Voila, order a new fan motor, plug in, and runs like a dream at all speeds…for now! Hope there are no gremlins lurking. Again thanks everyone for helping me work through this. Next step is to educate myself on reading electrical schematics. Can’t be that hard right? Maybe like learning Mandarin. Quote 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
Case20hp Posted July 23, 2022 Report Share Posted July 23, 2022 I had my fan motor quit Father’s Day weekend but had to replace the complete heater box. Mine was rusted out. The plus side was driving into the wind I had some AC with all the holes in the box. Quote Link to comment Share on other sites More sharing options...
rickeieio Posted July 23, 2022 Report Share Posted July 23, 2022 Congratulations figuring it out. I hope it stays fixed. I don't know it this holds true for Volvos, but for many years, a John Deere fan motor cost about three times what the same motor cost elsewhere. But for $75, you done good.🙂 Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
SuiteSuccess Posted July 23, 2022 Author Report Share Posted July 23, 2022 39 minutes ago, rickeieio said: Congratulations figuring it out. I hope it stays fixed. I don't know it this holds true for Volvos, but for many years, a John Deere fan motor cost about three times what the same motor cost elsewhere. But for $75, you done good.🙂 $180 for fan motor. $75 would have been in addition if resistor had to be replaced. Still pretty cheap. I’m thinking dealer cost for the job around $1000 if I was lucky. Quote 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
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