The answer to your first question is: noticeable The answer to your remaining question is: Refer to sections N:08:15 AND N:08:16 in the DeLorean Workshop Manual. If your mode switch is the factory installed unit I would suggest you replace or rebuild it to correct a vacuum loss problem. DMC Joe www.dmc.tv "See You At The Cruise-In" DMC Help / De Lorean Services / <dmchelp@xxxx> ----- Original Message ----- From: sk1pper@xxxx To: dmcnews@xxxxxxxxxxxxxxx Sent: Saturday, September 01, 2001 5:34 PM Subject: [DML] about ac vacuum system i know this might seem odd, but a wile back the center vents stopped working. the sides still did, so i knew the system was not a total loss. i found a man that worked at a dealership here locally that fixed it the first time. it was an unplugged air hose. bestdes the obvious "go back to him" fix, there does not seem to be anything unplugged. the air still flows throughout when i manually engage the ? accumulator? under the dash next to the vents on the passengers side. two questions 1. how much vacuum pressure should there be in laymans terms coming from the tube when i take it off the accumulator and test it in the palm of my hand. not noticeable noticeable pulls the skin 2. does anyone know the installation sequence of the hoses to the back of the controls. ive noticed they have numbers. www.sk1pper.com vin #10246 [Non-text portions of this message have been removed]