Question about Ford F-350

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Had ball joints replaced and now when I use my ESOF the A/C stops cooling/heating, etc. Seems as though the vacuum is being diverted, leaking, etc.? Any ideas?

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 ESOF: Electronic Shift On (the) Fly.
Get the vacuum lines checked.There is definitely a leak or blocake some where.
There is definitely something wrong in the climate control mode selector system, and it's usually a vacuum issue. If the control head doesn't receive the appropriate amount of vacuum, then the actuator is unable to change positions. I'd check for vacuum and work from there.

Note: Ford directly references a fault in the Vacuum Pump on certain models, providing the vacuum lines are in good condition. Ford even outlines the prevailing symptom being climate control stuck on defrost. Additionally, the 4X4 may be inoperative as well, as it depends on system vacuum for proper operation. The fix is replacing the Vacuum Pump.But before replacing any part get it checked first.

Also check the wirings if they are getting short and this can make the ac stop when ECOF is applied.
Thanks.

Posted on Jun 06, 2010

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