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| A/C Fan Clutch... To Spin or Not To Spin. http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=75586 |
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| Author: | thomas04 [ Thu Jun 13, 2013 9:10 am ] |
| Post subject: | A/C Fan Clutch... To Spin or Not To Spin. |
Good day. My a/c fan clutch does not seem to engage anymore. I cranked the a/c and popped the hood but fan clutch was still. However, upon jumping back into the jeep the a/c was darn cold and blowing hard. Is this normal? Looking up info on a/c fan clutches and most said if the clutch does not engage there would be no cold air. So why is my a/c seemingly working fine except for the fact the clutch stays idle? I have on 06 sport with 118 000 k/m. Thanks to any and all responses. Peace, Thomas |
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| Author: | papaindigo [ Thu Jun 13, 2013 10:41 am ] |
| Post subject: | Re: A/C Fan Clutch... To Spin or Not To Spin. |
I'm not AC person but how long did you run the system? I ask because I do know the AC compressor clutch is not "engaged" all the time as the compressor does not run all the time. How often it cycles, what triggers the cycle, etc I don't know. |
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| Author: | flash7210 [ Thu Jun 13, 2013 12:30 pm ] |
| Post subject: | Re: A/C Fan Clutch... To Spin or Not To Spin. |
Are you talking about one of the fans in front of the engine or the A/C compressor clutch? The A/C compressor clutch will activate as needed to keep cold air blowing in the cab. With the A/C on, the electric fan in front of the radiator should also come on. It has no clutch. The engine driven fan has a clutch but it usually wont engage until the engine is starting to overheat. |
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| Author: | thomas04 [ Thu Jun 13, 2013 2:14 pm ] |
| Post subject: | Re: A/C Fan Clutch... To Spin or Not To Spin. |
Thanks for the responses. A/C clutch is the issue. I know it is to turn on and off sporatically, is there a way to test its functionality without removing the serp belt? Peace, Scott |
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| Author: | flash7210 [ Thu Jun 13, 2013 3:30 pm ] |
| Post subject: | Re: A/C Fan Clutch... To Spin or Not To Spin. |
Are you sure you are looking at the A/C clutch? Not the viscous heater clutch? You could... 1. have someone inside the cab push the A/C button, while you in front of the engine listen for the click of the clutch engagement, and listen to the engine tone change. or 2. with the engine idling and A/C on, pull the A/C relay and use a jumper wire in the A/C relay socket to see if the clutch engages that way. Just be sure you jumper the right contacts. You don't want to accidentally short something out. |
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| Author: | papaindigo [ Thu Jun 13, 2013 4:00 pm ] |
| Post subject: | Re: A/C Fan Clutch... To Spin or Not To Spin. |
A legitimate thought. Thomas - the viscous heater is located on the upper passenger side front of the engine and has a couple of hoses coming out of the top. It does have a clutch that IIRC engages based on coolant temp and will not be engaged if the temp gauge is much above about 1/4 or so. The AC compressor is basically at the bottom front drivers side of the engine. |
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| Author: | CIMARRON13 [ Fri Jun 14, 2013 11:31 am ] |
| Post subject: | Re: A/C Fan Clutch... To Spin or Not To Spin. |
Is your freon topped off? I hooked a gauge to mine yesterday to check pressure level and it showed high so I let some out to be in the "normal" range but noticed the clutch cutting in and out in that range. I added freon and the clutch stayed on but the gauge shows high pressure. |
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| Author: | thomas04 [ Fri Jun 14, 2013 7:54 pm ] |
| Post subject: | Re: A/C Fan Clutch... To Spin or Not To Spin. |
I was looking at the viscous heater after all. Thanks for the education. Totally understandable why the clutch was not engaging while the A/C was on haha. My bad. Peace, Thomas |
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