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Pete, Auto Service Technician
Category: Ford
Satisfied Customers: 29111
Experience:  Over 17 years diagnosing and repairing automobiles various makes and models with some training and certifications.
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2008 F350 Ranch with Dual Climate Control, Passenger side

Customer Question

2008 F350 King Ranch with Dual Climate Control, Passenger side not operating properly, changed blend door actuator and no change
JA: What is the model of your '08 Ford?
Customer: F350 King Ranch
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: changed blend door actuator
JA: Anything else you think the mechanic should know?
Customer: both blend door actuators have been changed, display works as should except passenger side temperature
JA: How many miles are on the car? Have you checked the coolant level?
Customer: 92,000 Kilometers, Coolant level is fine
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Ford Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Ford
Expert:  Pete replied 1 year ago.

Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.

Is the temp to hot or to cold compared to how the temp is set at?

Does your model have the Auto heater and ac controls or manual?

Let me know so we can continue,thanks Pete

Customer: replied 1 year ago.
Auto controlsThe temperature is approx. 70 on passenger side vents regardless of what the drivers side is set at, or even if dual climate option is even on or not. You can set the temperature hotter or colder but no change whatsoever
Blend door moves freely as should, actuator was replaced with new aftermarket as well I changed it out again in hopes of a new defective part but no luck
Expert:  Pete replied 1 year ago.

O.k.,looking through the info on this model here I dont see a special calibration for this actuator.If you know for sure the actuator was installed correctly and all other heater and ac controls operate properly I suspect this fault here is due to an internal electrical fault in the dash control itself for the heater/ac system.I have seen this fail before in the past and had to replace it.

If you have not had the fault codes checked/read out using a scan tool that can plug in and communicate with all computers in your model this needs done.If any codes are set in the heater/ac control panel this will help diagnose and locate the fault here.I suspect the dash control may need replaced to correct this fault here.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete

Customer: replied 1 year ago.
do you have the wiring diagram to check for proper voltage to test or the test procedure?
Expert:  Pete replied 1 year ago.

Here is the complete diagram for this model here.Unfortunately my info is not showing me a specific test procedure without knowing the codes set.

Let me know if you need anything else and feel free to rate my help here as this is how I receive credit for my time.

Thanks Pete