Page 1 of 1
95 F150 A/C not working
Posted: Fri Jun 08, 2018 12:31 pm
by Eck
IΓÇÖve checked fuses and they are good. Blower works but it blows hot air. Anyone know what steps to take to check for why the A/C doesnΓÇÖt work?
Sent from my iPhone using Tapatalk
Re: 95 F150 A/C not working
Posted: Fri Jun 08, 2018 12:36 pm
by TOOLMAN
No freon?
Re: 95 F150 A/C not working
Posted: Fri Jun 08, 2018 12:40 pm
by Viperwolf1
My guess is the compressor isn't turning. Could be clutch problem or no current to activate it. No current could be due to low pressure in the system. There is a pressure switch that will allow the compressor to run only if there is good pressure in the system. That switch could be bad or you may have a small leak.
Re: 95 F150 A/C not working
Posted: Fri Jun 08, 2018 12:45 pm
by Eck
Viperwolf1 wrote:My guess is the compressor isn't turning. Could be clutch problem or no current to activate it. No current could be due to low pressure in the system. There is a pressure switch that will allow the compressor to run only if there is good pressure in the system. That switch could be bad or you may have a small leak.
Thanks. Is there a way to check the switch or for a leak? Or to even see if the compressor is turning?
Sent from my iPhone using Tapatalk
Re: 95 F150 A/C not working
Posted: Fri Jun 08, 2018 12:47 pm
by horseplay
hey Mike like they are saying you need to verify that you have a proper charge in the system a start working out from there.
Re: 95 F150 A/C not working
Posted: Fri Jun 08, 2018 12:53 pm
by Viperwolf1
Eck wrote:Viperwolf1 wrote:My guess is the compressor isn't turning. Could be clutch problem or no current to activate it. No current could be due to low pressure in the system. There is a pressure switch that will allow the compressor to run only if there is good pressure in the system. That switch could be bad or you may have a small leak.
Thanks. Is there a way to check the switch or for a leak? Or to even see if the compressor is turning?
Sent from my iPhone using Tapatalk
You can probably check the switch easily. Just check both sides for 12v. If it's only on one side then you should have the pressure checked by someone who knows what they're doing.
Don't use parts store recharge kits with stop leak in them. There is no way to get that glue out of the system and it will plug up a.c. machines. A.c. shops will test for the glue before hooking up their machines. If it has glue in it they probably won't work on it.
Re: 95 F150 A/C not working
Posted: Fri Jun 08, 2018 12:54 pm
by Strike2
I've disconnected the lo pressure harness the turn the engine and a/c on and using a jumper wire (briefly) jumper the harness just to see if the compressor starts more than likely you have low Freon if the compressor starts. Good Luck
Vipers way is probably more sensible (but then I would have to put my
down to use a multimeter)
Re: 95 F150 A/C not working
Posted: Fri Jun 08, 2018 1:19 pm
by Eck
Tried to jump the switch and I canΓÇÖt tell if the compressor is kicking on. Air definitely wasnΓÇÖt getting colder. My multi-meter is dead and I donΓÇÖt have a battery for it so couldnΓÇÖt check voltage to the switch.
Sent from my iPhone using Tapatalk
Re: 95 F150 A/C not working
Posted: Fri Jun 08, 2018 1:47 pm
by TOOLMAN
Eck wrote:Tried to jump the switch and I canΓÇÖt tell if the compressor is kicking on. Air definitely wasnΓÇÖt getting colder. My multi-meter is dead and I donΓÇÖt have a battery for it so couldnΓÇÖt check voltage to the switch.
Sent from my iPhone using Tapatalk
You should be able to hear the compressor kick on. You'll usually hear a click or snap type noise when the clutch engages. and the engine speed will change a little.
Re: 95 F150 A/C not working
Posted: Sat Jun 09, 2018 7:07 pm
by Digger
You can see whether it is turning or not. The inside of the pulley does not rotate when A/C is not cycling.
Center of pulley should cycle on and off with A/C on.
I would guess you have a leak and have lost enough freon that the low pressure switch will not let the comp engage.