My 1986 4x4 does not like to idle at a constant RPM. It will run at 1,200,
then drop to 1,000 and speed back up to 1,200 about once/second. I need to
get it through DEQ within the next two weeks. I know that's a high idle
speed, but it was set that way so that the A/C would come on. Any lower
and the compressor would not engage. I'm in Tucson!
Any idea where to look for a surging idle problem like this?