Vacuum Pump Inoperative or Runs Continuously, Climate Control Defaults to Defrost Mode – 1999-2006 Ford

 

FORDeBay logo:1999-2006 F-Super Duty
2000-2005 Excursion
1999-2006 F-650, F-750

 

1999-2006 F-Super Duty and 2000-2005 Excursion vehicles built before 6/27/2005 and 1999-2006 F650/750 vehicles, all vehicles equipped with the 7.3L or 6.0L diesel engine, may exhibit a vacuum pump that is inoperative or running continuously.

 

If the pump is inoperative, the climate control system will default to defrost mode and the 4×4 system may also be affected.

 

ACTION:

Install a new vacuum pump.

Before replacing the pump, check for and repair any pinched or leaking vacuum line(s).

 

PART NUMBER PART NAME
6C3Z-2A451-BA
Dorman 904-214 Vacuum Pump Compatible with Select Dodge / Ford Models
  • Ideal replacement - this vacuum pump matches the fit and function of the original equipment pump to restore operation of vacuum-operated functions
  • Durable construction - this vacuum pump is made of quality materials to ensure reliable performance and a long service life
  • Century of experience - for over 100 years, Dorman Products has provided quality automotive replacement parts to its customers
  • Quality tested - this part has undergone try-on testing to ensure a quality fit
  • Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle.

Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API


 

Vacuum Pump

 

Prestone AS259 All Season Windshield Washer Fluid - 1 Gallon
  • Combines bug wash technology with de-icer for winter frost
  • Strong cleaning against bugs, tree sap and road grime in the spring and summer
  • Ability to melt frost and light ice during the fall and winter
  • One washer fluid to protect and improve visibility all year long

Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API


 

Rain-X 800002250 Glass Treatment Trigger, 16 Fl Oz - Exterior Glass Treatment to Dramatically Improve Wet Weather Driving Visibility During All Weather Conditions
  • Flash point: 28.00 degrees_celsius
  • Improved Visibility - Dramatically Improves Wet Weather Driving Visibility Helping Repel Rain And Reduces Adhesion Of Sleet And Snow To Your Windshield
  • Glass Treatment - Treats The Glass Surface With A Super-slick, Non-stick Invisible Barrier Acting As A Repellent To The Elements Improving Safety And Driving Comfort
  • Trusted Brand - For 50 Years, Rain‑X Has Provided Drivers With Products To Help Them Outsmart The Elements. Products Are Designed To Help Keep Our Customers A Confident Step Ahead On The Road
  • Simple To Use - Simply Apply The Treatment To Exterior Glass And Watch The Raindrops, Snow, Sleet, And Dirt Fly Off Your Windshield While Driving

Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API


 

Prestone Bug Wash Windshield Washer Fluid, 1 Gallon
  • Removes and repels the toughest road grime
  • Power cleans: Winter - salt and road grime; All Year - road grime & dirt, bug residue and bird droppings
  • Water beading technology to improve visibility
  • Streak and glare free, improves windshield visibility; safe for rain sensing technology windshields
  • Size: 1 gallon

Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API


 

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