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We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.

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I have never understood why Dodge used the systems that it does to control the Heat / AC diverter door. The vacume devise is at best overly complex. I'm wondering why an old fashoned push/pull cable would not be better. Why not re-engineer it? "Choke cables" are cheap.

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You could the old Dodge Van and truck were pull cable type vent once long ago. But even back in the 70's that I remember all the vehicles with A/C had vacuum even then. It was just the heat only system that had pull cables. Now on the 94-98 bodies the blend door is cable twist cable operated but the rest is vacuum controlled.

  • Author

I'm pretty sure my 97 Cirrus is twist cable. Heat / AC

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.