I'm out of ideas....
Car was running fine, and still is except I found the car has no power when climbing hills -or- on the level, I push the accelerator pedal to the floor for passing gear and the tach just stays at 3k or whatever I was cruising at. Engine starts fine when cold (hr. in Pennsylvania temps in the morning have been abt 10 deg) and doesn't miss when running. When I push pedal for trans to shift to "passing gear" it does, but w/ no increase of engine speed - nothing happens.
When in park, idliing, engine winds-up easily to 4.5 - 5.5k -- seems like no problem w/ air flow.
Only a couple of months ago (about 5k miles) I put new air filter, checked vacuum lines, etc. Last summer (abt 8k miles) I installed new fuel filter and replaced pre-pump w/ new screen mesh filter (old one was maybe 120k on it). Air flow sensor flapper moves freely --
I've also checked air-duct-to-manifold for splits or cracks causing air leaks -- don't find anything.
Any ideas much appreciated !