AC not working
Senior Member
Joined: Mar 2013
Posts: 2,106
Likes: 235
From: Fullerton, CA
Start by turning on the motor and set the A/C to Max A/C and full cold. Open the hood and locate the compressor. If the center part of the pulley is spinning the compressor is running. At this point it's most likely you have a small leak and need to add freon to the low side of the system. Usually identified by a BLUE cap. The high side is red. Never add to this side. There are kits that allow you to add sealer and freon BUT if you've never done this I would take it to a shop or at least go on You-Tube and find a video that shows you how. Good luck
Senior Member
Joined: Dec 2011
Posts: 13,811
Likes: 3,184
From: Texas
About sealer, my experience.
Used it in my 08, did not help. I assume I had an evaporator pinhole leak. it impacted the cooling. I removed all 134a and opened system. The fixed orifice valve was coated and blocked by the sealant.
Put a new one in, vac down and recharged by weight. Worked as best it was going to for an 08 with 125K on it.
I would just go to wall mart and get a bottle with gauge and charge it up, forget the sealer.
Just me though. You have either a hose leak, look for oil and dirt around fittings, a compressor seal failure or an evaporator leak under the dash, big repair!
Used it in my 08, did not help. I assume I had an evaporator pinhole leak. it impacted the cooling. I removed all 134a and opened system. The fixed orifice valve was coated and blocked by the sealant.
Put a new one in, vac down and recharged by weight. Worked as best it was going to for an 08 with 125K on it.
I would just go to wall mart and get a bottle with gauge and charge it up, forget the sealer.
Just me though. You have either a hose leak, look for oil and dirt around fittings, a compressor seal failure or an evaporator leak under the dash, big repair!
Junior Member
Joined: Jun 2014
Posts: 3
Likes: 0
Hello, I have a 2000 F 150 5.4 I need to recharge my air. I bought a hose kit and used it to recharge the air on my Maxima, but it does not seem to fit the Ford. It will "almost" go on. I am using the port close to the firewall. Is there a special hose that I need to buy? Thanks
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Senior Member
Joined: Dec 2011
Posts: 13,811
Likes: 3,184
From: Texas
Hello, I have a 2000 F 150 5.4 I need to recharge my air. I bought a hose kit and used it to recharge the air on my Maxima, but it does not seem to fit the Ford. It will "almost" go on. I am using the port close to the firewall. Is there a special hose that I need to buy? Thanks
Does your truck and Maxima both use 134a? I don't know when ford switched. My 98 took R12.