Moving cross country. Wife is driving my F-150 and the AC cuts out about 15 minutes into the drive. It may or may not come back on. Getting check engine light code cylinder D. Clear that out and AC again works for 15 minutes. Told I have a vacuum leak. Have the dash apart looking. In Dallas so I need help fast.

 

cylinder D? whats the cylinder have to do with AC? Take it to a garage and get it fixed...otherwise Drive it.

 

I habe been advised that a vacuum leak will cause this error. Driving it is not an option because it is to hot. Anybody with actual helpful advise?

 

well we can tell you all kinds of stuff what could be wrong. but you are there with the truck. if you are in a hurry. a shop probably is your best bet.

 

what specific code is it throwing? 4.6l engine btw

 

You were probably advised wrong. A misfire on cylinder 4 ("D") will not cause an A/C fault nor will a vacuum leak cause either of your symptoms.

Most likely, the intermittent AC is due to a worn clutch, see HVAC FAQs.

The misfire is probably a COP/plug.