Noticing my idle does not change when I engage the air conditioning as stated in the Bentley manual (775rpm to 900rpm) I applied their test procedure to verify the AC microswitch and AC compressor signal are in working order.
According to "Table f. LH-2.4 and LH-3.1 System Electrical Tests" page 214-
15 (second from last item on the table) I should be getting approximately 10 ohms with the AC switch in the on position. I do not get 10 ohms. I get the same 1000 ohms as listed for AC switch in the off position. The AC compressor signal test produced high 4 ohm readings which fall into the 0-5 ohms listed in the table.My car idles at about 900rpm while in gear and about 1000rpm in neutral. This is according to the small tachometer installed in my dash.
I would like to get the car closer to the 775rpm idle speed listed in the Bently manual. Should I take care of the AC microswitch and see if that helps my idle? Prehaps I should fix it just as standard protocol, so to speak?
Any suggestions would be appreciated.
Thanks, Mehmet