The VCM code is 77, Fuel Failure, on my 1994 XJ12, 100050 miles. 6.0L The manual I have does not cover that code. Can you tell me what it is? There has been a sudden drop in fuel mileage from around 19 city to 13.8 and it won't go up. Car runs and starts great, just passed MD emissions with flying colors. I am considering replacing the air/fuel sensors just ahead of the CATS, they might be original. I just purchased the car about 6 months ago and have no idea of its history. Thanks for any help.
Thursday, October 18th, 2007 AT 3:19 PM