George Bosch wrote:
> 1) I monitor it on a weekly basis and was receiving between 17.5 and 19
> mpg constantly. The last two weeks my mpg has plummeted to 12-13.
>
> 2) What are the steps to a tune up and what should I replace? Is there
> anything I'm missing that you all can suggest?
>
Step 1: Place sharp knife between teeth.

Step 2: Dive under left side of engine.

Step 3: Viciously slash wire leading to the O2 sensor.

Step 4: Drive off happy, knowing you are now getting 18 mpg again.

TBill

***ALWAYS suspect the O2 sensor!***