Hey what's up everybody Im having the same problem as Justin. I have 95' T-Bird 3.8. The check engine light has come on, and now when I brake at a stop light the car will shudder. Also when I go in reverse down a hill the car will sometimes drop so far in RPM that the engine will shut off. Anytime I shift from idle, the rpm drops, and the dash flashes. Its as if the ngine shuts off for a 1/2 a second. Is it the O2 sensors??? Vaccum leak?? What should I do? The head gasket was replaced about 10,000 miles ago, and the mileage is at 146,000. I get oil changes regularly, and replaced a spark plug wire in the summer ( one was brushing against mainfold), along with all the plugs. Any advice? ALso I seem to be getting less gas mileage. I filled up the 18gallon tank and im getting about 270 Is that normal? I feel as if I was getting closer to 300. I sometimes can control this shudder if I pump the brakes when I stop a little, or start braking early. I just wanna take care of this car.