[john walker's workshop]

Get a cigar lighter digital voltmeter you can watch. Weird things happen with over charging. Unplug the over-rev relay up by the left front hood hinge. Check fuel pump fuse and wires for loose and crusty. Check the red wires on the + battery terminal for loose. Check the domelight fuse that powers the O2 relay, and the relay plug and relay under the pass seat. When that goes south, you get a low rough idle when it goes lean, but doesn't die.