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1997 ford e350 a/c problems

05-09-2008, 04:59 PM
When i bought this van i had to drive it home and it worked fine all 3 days and then a while after but now it only blows out the defrost vents. Could this be a vacuum leak or a bad vacuum actuator? I know that the blend doors that control which vent the air comes out are vacuum actuated. any vacuum routing diagrams would be helpful too. I have heard that when there is no vacuum to power the actuators that it will go to defrost by default is this true? and where are all the other actuators for the other vent setting located?

Thank you

05-09-2008, 05:52 PM
I just got ahold of a diagram, now i would just like to know where the vacuum actuators that control the dash,floor,defrost functions are located?

05-11-2008, 06:14 PM
Hi cFrank2, I'm into the same issue for my '99 E150 Van. Would you post or email the diagram you got? Thanks alot.

05-11-2008, 07:14 PM
I'm not sure how to post an immage but if you post your email or send me a message so i can get your email i will send the diagram to you. My email address is and the diagram is for a 1997 e350 with a 6.8L engine, i dont think the size of the engine would make a diffirence for the a/c though

05-18-2008, 08:06 AM
Hi : I am having the same problem So if it would not be a problem a copy of the diagram would be great. With todays cost of a mechanics time I need to check it out first, Thank You for any help Bill G

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