When riding on hill engine start loosing power and speed. Engine shaking on 40mh on 1995 Ford Crown Victoria

Hi, I have a problem with my Ford crown victoria 1995. It was sitting about 1,5 years. So I replaced plugs, plug wires, ignition coils, fuel filter, clean MAF. So still have the problem when i riding on hill engine start loosing power and speed. And when I accelerate from 30 to 40 miles/hr engine hesitates and shaking. Any ideas? Thank You

by in Clinton, IA on March 16, 2014
2 answers 3 comments
ANSWER by on March 16, 2014
Check the fuel filter and fuel pump pressure/volume.
COMMENT by on March 16, 2014
Can it be bad switch solenoid in automatic transmission or oxygen sensor malfunction?
COMMENT by on March 16, 2014
You diagnose it and let me know what you find.
ANSWER by on March 16, 2014
Light on??
COMMENT by on March 16, 2014
No check engine light