HELP 2001 4.5 Air Conditioner

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Jul 27, 2015 | 10:58 AM

WARedBear

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HELP 2001 4.5 Air Conditioner

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.

Jul 27, 2015 | 12:22 PM

brokenleg

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

Jul 27, 2015 | 12:59 PM

WARedBear

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Quote:

Originally Posted by brokenleg

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?

Jul 27, 2015 | 01:02 PM

brokenleg

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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.

Jul 27, 2015 | 01:22 PM

auskip07

Cross-Country

Joined: May 2015

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From: Atlanta

what specific code is it throwing? 4.6l engine btw

Jul 27, 2015 | 04:00 PM

projectSHO89

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From: St Louis

Quote:

I habe been advised that a vacuum leak will cause this error.

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.