AC Low Side Service Port On A 2006 Ford Crown Victoria - Page 2 - Ford Forums

cbennett2060 · 09-11-2009, 08:43

Quote:

Originally Posted by rtg143

If it's switching to defrost, the problem is a vacuum leak somewhere or the check valve isn't working. The freon won't have any effect on that.

Hi rtg143: could you tell me the location of the check valve? I bet I'll have to hunt down the vacuum leak if that is indeed the problem, but any help with that would be greatly appreciated as well and thank you in advance.

**rtg143** · 09-11-2009, 11:02

The check valve on the older ones is on the vacuum manifold aginst the firewall near the transmission dipstick tube. When the engine is running, listen under the dash to see if you can gear any hissing sound. If the dash was removed before, sometimes the vacuum hoses get pinched or damaged.

cbennett2060 · 09-12-2009, 12:11

Quote:

Originally Posted by rtg143

The check valve on the older ones is on the vacuum manifold aginst the firewall near the transmission dipstick tube. When the engine is running, listen under the dash to see if you can gear any hissing sound. If the dash was removed before, sometimes the vacuum hoses get pinched or damaged.

Thanks rtg143, I'll give it a shot and report back in a few days.

Steve83 · 09-17-2009, 06:49

I don't want to pay an eye surgeon to play golf 4 days a week, or go to Maui 6 times per year. But that doesn't mean I'm gonna grab a scalpel and carve up my kid's eye. If you want it done right, either spend the time to learn how to do it, or pay someone who has.