Why is the disco running lean?

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Author Message   joe lytle (Joey_l) New Member Username: Joey_l Post Number: 1 Registered: 09-2003 Posted on Friday, September 05, 2003 - 12:04 am:    I have a 96 Disco. Today I had the fuel pump, filter, ferrels, changed out and the check engine light up about 15 miles after I left the shop. Where do I go next? Any help would be greatly appricated. Thanks   carl seashore (Drcarl) New Member Username: Drcarl Post Number: 19 Registered: 07-2003 Posted on Friday, September 05, 2003 - 03:35 pm:    joe-i would look at your oxygen sensors. the truck has 4-two front and two rear. if the ECU is not receiving info from one or more of these it can effect the fuel mixture. check the fault codes (autozone will read the OBD free of charge-look up the numbers on www.robisonservice.com) to see which sensor(s) is/are bad and go from there. i have also had issues with the wiring harness from the rear set. good luck. carl