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 > It's too hot! AC quit.

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1995brave

San Antonio, TX

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Posted: 06/11/18 07:17pm Link  |  Print  |  Notify Moderator

2012 Ram went to work Friday morning AC working great. Got out of work 9 hours later (98 degrees out) started up the truck, turned on the AC knew it would take a little while to cool down, drove all the way home and it never cooled down. Picked up one of the recharge kits with low pressure gauge. Followed directions, compressor turning on, gauge shows in the green, high side line getting very hot, not getting cold. Picking up full set of gauges tomorrow from HF to check out high side pressure. Any ideas on what could be stopping it from working? Did a google search with no real help everything was for Gen 2 and 4 Rams, mine is Gen 4.

transamz9

Lawrenceburg Ky

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Posted: 06/11/18 07:27pm Link  |  Print  |  Notify Moderator

Blend door is stuck/broken or clutch fan is not working.


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ScottG

Bothell Wa.

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Posted: 06/11/18 07:45pm Link  |  Print  |  Notify Moderator

My guess would be the blend door stuck so there's always heat.
Might be a one time hiccup and work fine tomorrow!


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miltvill

Ft. Lauderdale FL

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Posted: 06/11/18 08:48pm Link  |  Print  |  Notify Moderator

I had a similar problem with a Dodge Charger. The compressor fuse would get hot and stop working. Replaced the fuse and all was fine.


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newman fulltimer

louisiana

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Posted: 06/11/18 08:56pm Link  |  Print  |  Notify Moderator

If has a electric ac fan fyluse popped

1995brave

San Antonio, TX

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Posted: 06/12/18 10:53am Link  |  Print  |  Notify Moderator

Update, blend door is fine, compressor clutch is turning on and off as I turn the AC on and off. Fans are all running. I'm down to the expansion valve or actual compressor. Won't know until I get the gauges tonight. Hope it's not the evaporator core, that requires the dash to be pulled out.

ScottG

Bothell Wa.

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Posted: 06/12/18 11:34am Link  |  Print  |  Notify Moderator

Not overly knowledgeable on this stuff.. wouldn't the failure mode of the evaporator be that it leaks or is there some other way it can cause trouble?

1995brave

San Antonio, TX

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Posted: 06/12/18 12:42pm Link  |  Print  |  Notify Moderator

ScottG wrote:

Not overly knowledgeable on this stuff.. wouldn't the failure mode of the evaporator be that it leaks or is there some other way it can cause trouble?

An internal failure of the compressor or dryer can cause oil or other particles to travel through the system.
I'm afraid i'm going to be spending around $300 at rockauto.com for compressor and other items, and then who knows how much for some one to evac and fill the system.

newman fulltimer

louisiana

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Posted: 06/12/18 04:26pm Link  |  Print  |  Notify Moderator

I just fixed the wifes you can rent a vacume pump and guages or for under 200 get from harbor frieght i used coupons bought mine for 136 for guages and pump worked just fine ac blowing cold

1995brave

San Antonio, TX

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Posted: 06/13/18 06:14am Link  |  Print  |  Notify Moderator

Well picked up the gauges and vacuum pump from HF on the way home yesterday. Outcome is not good, High side is low, Low side is low. Put in some Freon, low side rose, high side stayed the same. shut the AC off high and low stayed the same, not equalizing. Either obstruction or compressor shot. Opened low side port and oil came out. Went to rockauto.com and ordered everything. It will be here in the day I head to the coast fishing (going to take the KIA Soul).

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