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I just replaced heater core on my 99 f150 and now no controls are working. I think it's a vacuum problem but not sure where to look. Dash is not completely back together but enough to check it out. I hope i don't have to drop dash again. Thanks

Pᴀᴜʟsᴛᴇʀ2
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russell lawson
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1 Answers1

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I would first check you are getting vacuum and then make sure the pipes are in the correct places.

Solar Mike
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