Had check engine light come on right at 97000 miles.

Most likely due to the mileage of your vehicle, oxygen sensors would be culprit. Have this verified by going to an auto parts place and getting a free scan with their scan tool. Knowing what you're needing replaced will save you $ in the shop instead of them taking you for a ride replacing parts you don't need. If you haven't already done so, I'd recommend spark plugs and wires as well.