P1747 - What Next???
97 T-Bird, 4.6, 63K, original owner.
Check Engine light came on. OBD showed 2 codes, both P1747. After doing some research here, I decided to start with the internal wiring harness (soft harness, white connector). Still had the same problem... 2 codes, P1747.
I checked the external wiring harness and the two wires that go to the EPC seemed OK... no corrosion on the connectors and no resistance.
Decided to change the EPC. While I was in there, I changed the 1-2 and 2-3 accumulator pistons and springs (went with stock parts, since I always liked the smooth shift on this car), and installed a sonnax pressure regulator valve.
Still have the same problem... 2 codes, both P1747.
What do I do next? Should I keep looking for problems inside the tranny (MLPS, or one of the other solenoids)? Or am I set with the new harness and EPC?
I'd like to check the wiring harness that goes from the tranny to the computer, but I have no idea which leads to test. Does anyone have diagrams of the pin layouts for the two ends of the harness?
Last edited by grumpy_steven; 10-25-2010 at 10:26 AM.