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Old 04-29-2015, 09:51 AM   #1
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2005 E-350 6.0L A/C failure

I have the same problem as described here:

http://www.ford-trucks.com/forums/50646 ... blems.html

"The air conditioner works fine as long as we're moving (and getting the RPM's up). When we are in stop and go traffic or just sitting and idling for more than a few minutes, the A/C stops blowing cold air. It gets warmer and warmer until it's just as hot as the outside (90 degrees or more!)"

Is there a solution?
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Old 05-01-2015, 12:07 AM   #2
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Re: 2005 E-350 6.0L A/C failure

There is a common issue that the vacuum chamber cracks, this is what holds the AC flaps open at low rpm when the engine doesn't make enough vacuum to hold them open. Your problem description sounds just like that. Problem with the E350 is access to replicating the vacuum reservoir is way more work that anyone cares to do, so many just bypass the reservoir with an aftermarket one placed in the passenger footwell. I put mine behind the passenger side headlight. if you search this forum you will find the information.
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Old 05-01-2015, 04:11 AM   #3
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Re: 2005 E-350 6.0L A/C failure

If this is the common vacuum reservoir problem there are several threads on FTE covering quick and inexpensive fixes.

Here are a few:

http://www.ford-trucks.com/forums/12...-problems.html

One more:

http://www.ford-trucks.com/forums/10...efrosters.html

Each thread needs to be culled for the best info---lots of bantering in them.

Hope this is helpful.
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Old 05-01-2015, 06:48 AM   #4
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Re: 2005 E-350 6.0L A/C failure

Quote:
Originally Posted by SheepShagger
There is a common issue that the vacuum chamber cracks, this is what holds the AC flaps open at low rpm when the engine doesn't make enough vacuum to hold them open. Your problem description sounds just like that. Problem with the E350 is access to replicating the vacuum reservoir is way more work that anyone cares to do, so many just bypass the reservoir with an aftermarket one placed in the passenger footwell. I put mine behind the passenger side headlight. if you search this forum you will find the information.

Thank you guys
Any links for buying the bypass?
Can you post some pics of your installation?
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Old 05-15-2015, 08:59 PM   #5
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Re: 2005 E-350 6.0L A/C failure

Quote:
Originally Posted by ArikB
Thank you guys
Any links for buying the bypass?
Can you post some pics of your installation?
I was sure it was the 1 way valve and not the tank, so I removed the fender and drilled a hole in the innerfender so I could grab the valve and test it.



It wasn't the valve, so I made a new tank and plumed it into the front just behind the headlight and fusebox. IT was made out of what I had on hand, just PVC pipe.





The valve and reservoir are under all the AC & Heater crap on the engine side of the firewall. No way to get to them without pulling all the AC / Heater or drilling a hole. BUT, you can bypass the whole lot without drilling a hole. From the inside passenger footwell you will find a rubber hose entering from the engine bay. This is the outlet end of the reservoir & 1 way valve. In the engine bay just by all the AC gubbins, you will fine the same size rubber hose being fed down the bulkhead, this is the feed to the reservoir & 1 way valve. So, with a lot of playing you can run a new piece of pipe from the passenger footwell up to somewhere in the engine bay. (You will probably need a fish). One you have that run, cut the OEM pipe in the passenger footwell and splice the tube running up into the dash directly into the new pipe. In the engine bay, cut the OEM pipe as it runs down the fire wall, add a 1 way valve, then a T, one end of the T goes to the new pipe, the other to the new reservoir.
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Old 05-18-2015, 08:42 AM   #6
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Re: 2005 E-350 6.0L A/C failure

Thank you SheepShagger for posting the pics.. looks like a lot of work

I wonder if I should order the OEM reservoir:

http://www.ebay.com/itm/261575237541?_t ... EBIDX%3AIT

and cut a hole like this guy did and replay the OEM reservoir and valve :
Attached Thumbnails
e150HVACcanisterfenderhole (Medium).jpg  
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Old 05-19-2015, 04:55 AM   #7
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Re: 2005 E-350 6.0L A/C failure

There's no need to cut into the body or even remove the fender as SheepShagger did although that's quite an impressive way to test this part of the HVAC system. .

The check valve and new reservoir can be mounted and inserted into the control system all under the hood, nearly nothing removed. Take a moment to read though the links I posted to see how this can be accomplished with the least amount of effort.
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Old 05-24-2015, 05:38 PM   #8
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Re: 2005 E-350 6.0L A/C failure

Quote:
Originally Posted by JWA
There's no need to cut into the body or even remove the fender as SheepShagger did although that's quite an impressive way to test this part of the HVAC system. .

The check valve and new reservoir can be mounted and inserted into the control system all under the hood, nearly nothing removed. Take a moment to read though the links I posted to see how this can be accomplished with the least amount of effort.
Don't cut a hole to test (or to replace the tank). Just use the info in my post above and bypass the whole dam lot. Trust me I wish I had followed what most people on net said and just bypassed it all in the first place rather than trying to fix it. I wasted a full day trying to fix it, took me 1 hour to bypass the whole lot with a new tank & valve.
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