I've been chasing an intermittent miss at idle and just off idle for about a month, now. Items that have been recently changed include: igniter/coil pack, TPS, distributor cap, rotor button , plug wires. I also checked the NGK plugs I installed back in January this year and they show minimal fouling, none were 'white' from water in the combustion chamber and all checked out @ .031 inch gap (standard). Tomorrow I'm going to check all the vacuum lines and also give the throttle body ANOTHER good cleaning ( last cleaning was in January when tne plugs went in [before a road trip]}.

I'll keep ya posted.

Mike in AR