6.0L loss of heat control

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04-17-2016, 07:39 PM

bsigg

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6.0L loss of heat control

Would installing a XDP coolant filter cause loss of cab heat control?

If I set the thermostat to 60 F it cools down but if it is 65 F it is just as hot as max.

Thanks.

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04-17-2016, 08:06 PM

navistarnut

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Sounds more like an issue with the blender door, or whatever it's called on our trucks.

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04-17-2016, 09:28 PM

Thor'sHammer

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Check to see if you accidentally damaged or disconnected the vacuum line connecting to the heater core shutoff above the passenger side valve cover.

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04-18-2016, 08:19 AM

JeremyXDP

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Quote:

Originally Posted by bsigg

Hi I installed a XDP coolant filter on my 6.0L and switced to Prestone Command EC-1 and now for some reason I can't control my heat. If I set it at 60 F it cuts out but at 65 F it is just as hot as max.

This is troubling.

Thanks.

Addendum: This truck was mouse infested and was taken to a specialist in vehicle restoration. Maybe they didn't hook something up right in the heating controls? I didn't notice before but the weather has warmed up so its more annoying now.

From your other thread: ^^^

It sounds like something else is going on there. The Coolant Filtration System really wouldn't have any effect on the HVAC controls. I tried to send you a PM but it won't let me. Give us a call at 1-888-DIESEL-4 and we can get you in touch with our Tech Department.

Edit: PM's can't be sent your way for some reason.

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