lately the idle on my 22RE truck has been pulsing every so often, either nearly dying and normal idle speed, or between a normal or high idle. usually 1 second between pulses here. applying or removing my foot from the brakes has no effect, though sometimes i can get it to kick down to either a normal or high idle by slapping the gas pedal.

never had anything like this before...anybody have any insight?

'79 sport 4x4 longbed <img src="/forums/images/graemlins/smile.gif" alt="" />
20/22R hybrid with EB's OS valves, 268c cam, offy intake, weber 32/36, thorley header, 5 speed swap, 34" LTBs, downey 3" springs, marlin hysteer, 4.88s and locked

'91 4x4 shortbed
22R-E, W56, the dd!