j30 Idle

[misfit6794]

So I've got a 93 j30 with 117,000 miles. So far I've cleaned the maf and iac and throttle bodies, including the connectors, replaced the air filter,plugs (ngk platinums),fuel filter, and battery. I still have a miss/rough idle, I can't figure out whats left that could be causing it, maybe a bad battery cable? Im out of ideas, any help would be greatly appreciated.

[Q45tech]

Ohm each injector to evaluate the ethanol damage, test each indivual ignition coil for proper voltage and cleanliness [arcing prior to plug].

Evaluate ecu sensor voltages with Consult