I Need Input on 98 Plymouth Grand Voyager

1st symptom ---- odometer Mph and RPM guages work fine but occasionally when I starte neither one would work --- later they would be fine again.

2nd symptom ----- car seems to jump slightly with acceleration particularly if heavy on the gas

3rd symptom ------ today service engine soon light comes on car is running sluggish but still car is running but a obvious sluggishness

The oil was clear and at the ight amount transmission fluid looked moderate not burned but clear and at the right amount The only obvious thing was a split in the hose from the air filter to engine --- could that cause the problem?? Will car run if timing belt is broken?? If transmission is shot would car run how obvious would it be?? from the belts I could see everything loooked fine.