Air conditioner cycles off then back on in 2005 Taurus... dash lights and radio turn on and off too (I hear a ding sound)... only happens in 90+ heat... after an episode, when car is turned off I hear a "clicking sound" from the ignition switch for a few seconds.
The compressor was replaced last April. One mechanic said the system was low. The most recent filled it back up just a week ago.
I am still waiting to get to the mechanic and tell him what you found.
No luck with it being the electronic ignition. They drove it all day with no issues. It WAS about 8 degrees cooler outside (92 instead of 100.) Don't know if this is temperature related or not...
They got it to duplicate the fault once or twice, they just couldn't track down the cause. They DID tell me the motor shuts off when this happens, they had a computer hooked up while they were driving it.
I don't know. But I am headed by a dealer today and will ask him how much it would be to replace it, (or I might just order the part online, should be just a small rectangular box with some wires on the inside if I read the drawings right.) Doesn't LOOK that hard to replace myself (with a little help) and it's CHEAP.
will keep you posted... THANKS AGAIN PETE!
just an update. replaced the electronic ignition switch VERY EASY... seems to have done the trick, no more electronic hiccups