Shawn855 Posted July 17, 2021 Report Share Posted July 17, 2021 At what temperature should the radiator fan kick on its lowest setting. Also is there a way to force the fan to kick on such as turning the AC on? Currently I noticed that my AC is not blowing very cold unless I'm driving the vehicle which normally points to a fan issue and now that I think about it I haven't seen my fan kick on ever really, though I keep an eye on my temp and it never goes above 105 celcius. Thanks Quote Link to comment Share on other sites More sharing options...
Shawn855 Posted July 17, 2021 Author Report Share Posted July 17, 2021 Nevermind. The fan does kick on when the ac is running. Any other ideas why the AC isn't blowing very cold when vehicle is stationary ? Quote Link to comment Share on other sites More sharing options...
OhareFred Posted July 18, 2021 Report Share Posted July 18, 2021 (edited) Low on Freon? Compressor on the way out? Low idle? Weak belt? Bad belt tensioner? Could be a few things. Are you knowledgeable about AC systems? If not, best to take it to a pro. AC systems can be touchy…. Edited July 18, 2021 by OhareFred Quote Link to comment Share on other sites More sharing options...
Shawn855 Posted July 18, 2021 Author Report Share Posted July 18, 2021 Freon was empty for a year and finally got a chance to bring it to my shop to have it topped up. I still suspect a leak, as I hear some hissing from time to time when the ac is on. Idle is good. But ya I definitely don't have a strong grasp on AC systems so I'll just deal with it for now until something more obvious breaks down. Quote Link to comment Share on other sites More sharing options...
2late4u Posted July 18, 2021 Report Share Posted July 18, 2021 was the dryer replaced when you had the Freon added ? also did they pull a vacuum on it or just added the Freon.? and ya find and fix the leak Quote Link to comment Share on other sites More sharing options...
Shawn855 Posted July 18, 2021 Author Report Share Posted July 18, 2021 All they did was attach their gauge to it, saw it was low on freon, topped it up, then had to use their obd2 tool to get the compressor to kick back on again. Quote Link to comment Share on other sites More sharing options...
2late4u Posted July 18, 2021 Report Share Posted July 18, 2021 i am NOT a mechanic but over the yrs have had several ac units fixed on cars and usually when a system has been run out of Freon they always replace the dryer unit ,and then they will find the leak,fix it then pull a vacuum to remove any air and also to verify the system is sealed then they had the Freon to the system, most of the times a leak is at the o rings or hoses..good luck it can get expensive OhareFred 1 Quote Link to comment Share on other sites More sharing options...
Shawn855 Posted July 18, 2021 Author Report Share Posted July 18, 2021 Thanks. I also forgot to mention they did put some dye in the system to try and trace the leak. So when I bring it back and they fix the leak, I'll mention that piece of advice to them. Quote Link to comment Share on other sites More sharing options...
OhareFred Posted July 18, 2021 Report Share Posted July 18, 2021 If you hear hissing it’s low on Freon. The “repair” that was done was lacking at best. Take it to an AC repair specialist… Quote Link to comment Share on other sites More sharing options...
Shawn855 Posted July 18, 2021 Author Report Share Posted July 18, 2021 I saw the gauge when he topped it up and it was full. The hissing is most likely the slow leak no? Quote Link to comment Share on other sites More sharing options...
OhareFred Posted July 18, 2021 Report Share Posted July 18, 2021 Sometimes when the Freon is low you can hear a hissing sound as the Freon that remained in the system travels through the hoses, condensers,etc. I heard the same sound coming from the dash when my Freon was low. Blew cool air, but not cold. Dealer (I have a lifetime MaxCar Warranty) found the leak (bad hose) evacuated the system, replaced the hose, vacuumed the system, tested for pressure, then refilled with the correct amount of Freon. Ice cold air now and no hissing! You need to find the leak and repair the system. Just adding Freon isn’t going to work, will be expensive, and is definitely not a good situation. Quote Link to comment Share on other sites More sharing options...
Shawn855 Posted July 18, 2021 Author Report Share Posted July 18, 2021 Yes I understand that but again, it hissed the first time on my way back from the shop after he topped it up completely so the hissing wouldn't be caused from low freon in this instance. I also understand that simply adding freon isn't going to work as I had mentioned that he put dye in when refilling the system that will help track the leak when I head back. And finally, as mentioned above, the vehicle blows perfectly cold while the vehicle is in motion. It's only when it's at a standstill that the AC doesn't blow as cold. Quote Link to comment Share on other sites More sharing options...
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