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:thumbup:

Take an ir temp gun a check the temp of the hoses coming right out of the core. Operating temp..fan on high....full heat.

I have had a vacuum leak in my 93 460 since it was new.

I guess my old stuff is maybe a bit older. The 90's fords were notorious for blend door problems.......mostly from pens dropped down the defrost vents.

It's not so hard to diagnose a heater core. Sure, if it's leaking it needs replaced. If you don't have hot air it's time to look at other problems. No airflow through the core but no temp diff indicates the outside is plugged. Too great a temp differential indicates a plugged core. A...

What kind of pickup? Sounds like he fugged up a blend door.