Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 1996 ford ranger 2.3L p1506 › Reply To: 1996 ford ranger 2.3L p1506 September 15, 2023 at 8:34 am #1026076 Rahul JonesParticipant Your fuel trim values tell me that you have a vacuum leak. It would be good to look around again. Block the vacuum going to the brake booster. If no change then, get a vape and blow smoke onto a vacuum hose. That should make the leak more evident.