Excursion AC issue, VACUUM? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 2 (permalink) Old 06-16-2014, 11:39 PM Thread Starter
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Excursion AC issue, VACUUM?

Ok folks, my new to me excursion has an issue I found, When running the AC, the cold air is coming from the lower and windshield ducts and a tiny bit from the dash ports, now when I get to a stop light after hiway riding, with my foot on the brake, the ac works fine in the dash vents, then once I drive on after the light turns back green, it goes back to the other vents once I get up to 1800 rpm's. Sounds like a vac. issue, anyone got any idea's or have this happen before? Any help is appreciated.
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post #2 of 2 (permalink) Old 06-17-2014, 03:32 AM
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If it's a 4x4 check the vacuum lines at the reservoir and going to and ftom the vacuum switch on the inner fender. The lines are plastic and sometimes the battery cables and other stuff bibs on them and causes them to become damaged. My V10 did this exactly when I bought it, the fix was about $3 worth of rubber hose.

The Current Truck (Oct-2013 to Present):
1999 (Early) F-350 Lariat, CCLB, SRW, Black/Tan

7.3L Powerstroke, 4R100, 4x4, 3.73, 37x13.50-18s, '05 Axle Swap, 6" Fabtech lift, GTP38 "D66" turbo upgrade, SCT 4-position chip with custom tuning by me, Straight Piped 4" down pipe through 5" dual stacks, N-Fab full length triple steps, Pro-Tech cab guard and tool box, louvered 5th wheel gate, Hella 500 Fog and Driving lamps, much more to come...
The one I'll miss, (Mar-2009 to Jan-2014):
2000 Excursion XLT 4x4

6.8L V-10, 4R100, 4.30, 285/75-18, 271whp / 388wtq
The one I won't, (Jul-2005 to Sep-2012):
2005 F-350 XLT, CCLB, SRW, 4x4 FX4

6.0L PSD, ZF-6S650, 3.73, 35x12.5-18, 4.5" Lift
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