1996 Chrysler Concorde no power

Engine Performance problem
1996 Chrysler Concorde 6 cyl Front Wheel Drive 160000 miles

The idle speed changes by a couple of hundred rpm and after reving the engine and taking my foot off the gas, it has a tendency to die. It has no power when it's in gear. We checked the fuel pump, changed the plugs, installed a new fuel filter, cleaned the throttle bore, cleaned the pcv valve, put in a new air filter, checked the compression and 2 cylinders are running about 85 psi and the rest are about 105 psi, the injectors are clicking, the timing belt was changed about 30,000 miles ago. I have run out of ideas, can you help? Thank you very much.