here is one for you guys. i have a 97 lx with a 4.6. it has 117000 miles on it. new mototcraft plugs and wire, new maf,gas filter, just ran 2 bottles of lucas through the engine.trans was flushed out with mercon v , the problem is when i turn on the air. it starts to miss then it smooths out ,then it misses ,it does this the entire time that the air is on. by the way this car averages 24 miles to the gallon. this is driving me nuts. i've checked out the coil packs they are ok, i thought that i might have had a clogged injector, thats why i ran 2 bottles fo lucas in the last 2 fillups. anyone else have this problem?