Buster83 Report post Posted May 4, 2012 I have a 2002 Monaco Knight. When I first bought it, used, the AC had reverted to its default status ( flowing through the defroster vents). I found that the vacuum pump fuse was blown. After a year and a half, the system went to default again. The fuse is good. I think there must be something wrong with the pump or wiring to it. I can not locate the vacuum pump. Please help! Share this post Link to post Share on other sites
wolfe10 Report post Posted May 4, 2012 Most are under the front of the coach. Look in the compartment in front of the driver's front wheel and/or the "nose". Tracing the vacuum line from the dash HVAC system may help you locate it. Brett Share this post Link to post Share on other sites
