Hi I have a dodge 97 caravan and few days ago it seems that it is eating too much gas.I dont feel any changes when its running thanks.

 

I've had two 97's with 3.3's. Both of them dropped major gas mileage when the EGR valve went bad and both also had upstream o2 sensors when they went bad. Both times, it took a while for the mil lamp to come on after eating a lot of gas.