Air conditioning issue.

93fordturbo · May 23, 2016

85 cc drw 6.9 auto. Bought the truck and guy said he replaced blower motor.( I believe the round thing in front of the glove box passenger side.). The AC works, blows cold air but not very much pressure. When I switch from low to high, I can hear the fan blowing more, but it isn't much pressure at all. Doesn't matter if I have it on max AC or vent, air comes out of the defrost and vents and floor. The air always comes out every spot no matter the setting. What could be my issue. I want more air forced out of the vents and to be able to change from floor to vent to defrost etc. Thanks in advance for the help guys

DaveBen · May 23, 2016

Your vacuum to the AC unit is not connected. Blowing out of the defrost is the default. Look for a broken or disconnected vacuum line.

Dave

93fordturbo · May 23, 2016

Ok, will do where should I start looking. It's still blows everywhere else though. Not just the defrost. I'm wondering if when the person who sold it to me, might have screwed something up with the install?

crash-harris · May 23, 2016

Start with the vacuum solonoid on top of the duct box tucked up next to the passenger side fender. That little white vacuum line is notorious for rotting out.

icanfixall · May 23, 2016

crash-harris said:
Start with the vacuum solonoid on top of the duct box tucked up next to the passenger side fender. That little white vacuum line is notorious for rotting out.

This is exactly the place to start looking for a broken line. It might confuse you because this white vacuum line goes into the wire harness and disappears in the loom. Just carefully cut back the outside wrap with a new exacto knife being very careful not to nick a wire. Mine has broken off 3 times since 1996 when I purchased my rig..

BDCarrillo · May 24, 2016

It might also be a good idea to remove the blower motor and take a look inside the air box with a mirror. I had one that was home to a big rats nest, and the condensation/debris gunked up the evaporator.

93fordturbo · May 24, 2016

I do notice that every once in a while, some black specks come out and land on the top of my dash. It almost looks like old foam or something. But I feel like it needs to blow harder and it should be able to switch between settings

79jasper · May 24, 2016

Quick dumb question.
Where's the condensate drain on these?

Sent from my SAMSUNG-SM-G935A using Tapatalk

OLDBULL8 · May 24, 2016

Pull the glove box out, behind it is the heater and AC coils. Might be a lot of debris in there.

79jasper: the drain is there also, should be a hose connection, but the hose is on the outside. The hose may be plugged up on the bottom, spiders like to make a nest up in the hose end.

OLDBULL8 · May 24, 2016

You can carefully pull the heater/AC control unit out, check for vacuum hose connections.

Air conditioning issue.

93fordturbo

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DaveBen

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93fordturbo

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crash-harris

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icanfixall

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BDCarrillo

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93fordturbo

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79jasper

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OLDBULL8

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OLDBULL8

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