A/C blows cold on drivers side but normal air on passenger and the back

2005 JEEP GRAND CHEROKEE LAREDO
167,000 MILES • 3.7L • 6 CYL • 4WD • MANUAL
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JOSUE.H
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I bought a new blend door motor and replaced it, but it did it still did the same thing, so I took it off and returned it. I wasn't aware that I was supposed to sync it up by removing the fuse or by unplugging the battery. Does anyone think that's why it didn't work? When I start my vehicle with the original blend door motor you can see the gear move and when i had it off i moved the gear that don't come off back and forth but it still didn't change the way the air felt. I have a pregnant wife who cannot ride in our car at this time due to this. Can anybody help me out to figure out what the problem is here? I would really appreciate it. Thank you.
Jun 18, 2020 at 10:58 PM
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ASEMASTER6371
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Good morning,

If you moved the door manually and the air did not get cold then it is either the door itself in the heater case or it is a Freon issue.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

I would start by checking the actual pressures with a set of gauges to see if the system is working correctly. You can rent a set of gauges or buy a cheap set for this procedure.

The other possibility is the actual door itself inside the case. The gear may be moving but the door is not.

Roy
Jun 19, 2020 at 5:04 AM
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JOSUE.H
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I calibrated the blend door motor by removing the HVAC fuse for both front and rear and that still didn't work. I pulled out the glove box and seen the gears move and the door as well. So I don't think its any of that. I am on my way to go get Freon I hope that works, if not do you have any more ideas? Do you know where I would get a gauge and how would I use it and everything I would need? Thank you so much for your help i really appreciate it.
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Jun 19, 2020 at 1:02 PM
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ASEMASTER6371
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Harbor freight has a cheap set of A/C gauges and they have the Freon as well.

Roy
Jun 19, 2020 at 1:06 PM
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JOSUE.H
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Okay, thank you. with seeing the video do you think that's what it would be or do you think it would be something else?
Jun 19, 2020 at 1:53 PM
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ASEMASTER6371
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One step at a time. Let us see what the pressure are at this point.

Roy
Jun 19, 2020 at 1:58 PM
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JOSUE.H
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Is the gauge what is on the Freon can?
Jun 19, 2020 at 2:33 PM
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ASEMASTER6371
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No, it is a gauge set with the high and low side gauge to read pressures.

https://www.harborfreight.com/search?q=automotive%20ac%20gauges

Roy
Jun 19, 2020 at 2:40 PM
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JOSUE.H
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At this time I do not have the money for the gauges, but I do have the A/C Pro. Can I just use that to recharge my A/C or do I have to have those gauges? If not how do I recharge it? Again thank you so much for you help i really do appreciate it.
Jun 19, 2020 at 2:48 PM
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ASEMASTER6371
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You can try with the charge kit but it is not accurate at all.

Try adding a can and post a picture of the reading after you install the can.

Roy
Jun 19, 2020 at 3:03 PM
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JOSUE.H
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On the gauge on the A/C Pro says filled at 30 psi. so does that mean it's not the Freon?
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Jun 19, 2020 at 3:08 PM
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ASEMASTER6371
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Is this with the engine running and the A/C on?

If it is, how does the air feel in the car.

If it is without it running, no it is not.

Roy
Jun 19, 2020 at 3:12 PM
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JOSUE.H
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That's what it stopped at.
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Jun 19, 2020 at 3:33 PM
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ASEMASTER6371
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Okay, again, was the engine running with the A/C on?

How does the air feel inside?

Roy
Jun 19, 2020 at 3:54 PM
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JOSUE.H
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And yes that was with it running and the A/C in high with all the doors open.
Jun 19, 2020 at 4:17 PM
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JOSUE.H
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The air seems to be the same on both sides and the back blowing like it should be.
Jun 19, 2020 at 4:20 PM
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ASEMASTER6371
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Good. I would leave it there and enjoy it.

Good job.

Roy
Jun 19, 2020 at 4:24 PM
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JOSUE.H
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Thank you so much for your help. Much appreciated from my family.
Jun 19, 2020 at 4:54 PM
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ASEMASTER6371
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You are welcome.

Always glad to help.

Roy
Jun 19, 2020 at 5:05 PM