The AutoTemp can be a challenge to diagnose. Take it slowly. Be methodical. Walk away if you get frustrated. We need more information to have an idea what the problem is, but you mention one click which suggests to me that your compressor is coming on, but your fan is not. When the AutoTemp is turned on, two clicks should be heard. The first click is the yellow compressor switch. It takes less vacuum to activate. The second click is the green fan switch. The fan switch takes quite a bit more vacuum to activate, and can't be tripped when the AutoTemp system has a signifigant vacuum leak. Look for loose or cracked vacuum lines. Check the connection at the back of the selector switch in the dash. The selector itself can leak if the backplate has seperated from the switch body. A sneaky place for a vacuum leak is the vacuum switch for the fresh air door. Good luck! Dave Duricy 1973 Imperial LeBaron 1968 Imperial Crown convertible 1950 DeSoto Custom club coupe --- jhplc@xxxxxxxxxxx wrote: > Hi list, > > > Just got a 73 4dr and after checking all fuses, > vaccum and grounds on the Auto-Temp and jumping the > green master switch(assuming it was bad) and living > under the dash with the shop manual.. all it does is > make a click sound from the area around the master > switch/compressor switch and amplifier...could this > be the amplifer is bad, or worse the $$$ervo?? > > Thanks in advance > > Jerry/Pittsburgh, PA __________________________________ Do you Yahoo!? Yahoo! Mail - Helps protect you from nasty viruses. http://promotions.yahoo.com/new_mail ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm