Climate control problems...

[cajunpsd]

The air for a/c comes out of defroster vents..you can press the buttons and see the symbol change positions on the display...but nothing Changes with vent.

[TooMuch03]

You sir have a vacuum leak, or your vacuum pump is shot. I am willing to bet your 4wwd hubs don't engage either.

[cajunpsd]

U r correct about 4x4 hubs..they stopped engaging with switch last year.forgot to mention..my a/c turns off when I engage into 4x4..how much is a vacuum pump? And location of it? Thanks,Todd

[TooMuch03]

I am not sure on the cost of the pump. Google Tousley ford. They usually have the best online prices around. It is under the hood above the passenger side wheel well, You will see it right next to the vacuum canister (large oblong black thing) When you turn the key to on, you should hear it run, but it should shut off within a minute or two. I bet yors keeps running all the time.

To check if your pump works, jus tpull the line that goes from the pump to the canister and pug the hole on the pump with you finger while you have the key in the ON position. If the pump stops almost immediately, it is good, and you need to look for a leak.

[cajunpsd]

The pump runs constantly..i took line off of canister and plugged with finger..pump stopped immediately..confused now..

[TooMuch03]

That tells you that you pump is good. The next step would be to isolate areas to find out where the leak is. Since your 4wd quit working first, I would check that first. Between the vaccuum pump and the passenger side battery, you should see the 4wd solenoid, it is mounted on the fender and has several wires and a couple vacuum lines going to it. Disconnect the line coming from the canister to the solenoid and plug that one. The pump will run a little longer but should shut off. If it does, then your leak is in the 4wd system. If it continues to run, the leak is elsewhere.

[cajunpsd]

Thanks for quick responses..I will trace system tonight..and post what I found..

[DoubleDpsd]

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[cajunpsd]

Disconnected the 2 solenoid hoses and plugged lines. A/c vent selection working again.. And a/c working in 4x4 again.. So the problem must be the hub lines, from solenoid to hubs..I can trace and deal with later..

[TooMuch03]

Most likely the issue is inthe automatic hubs, but it could also be your seolenoid. Generally, the lines don't leak.

I had a similar problem with my truck and it ended up being the solenoid that was leaking.