1996 Cadillac SLS V8 Front Wheel Drive Automatic 127000 miles
The oil-leaking engine runs fine, but surges when driven (I don't recall at what speed that begins). I checked for trouble codes and a " P0503 Speed Sensor A" shows up. Is " Speed Sensor A" the one on the passenger side? I have replaced the speed sensor at the passenger-side trans output. It is possible the wiring to that is faulty, but I found it easier to replace the sensor, than mess with the wiring; however, that didn't solve the problem. Can I check the plug for the sensor, to tell whether it is receiving proper input?
Monday, October 19th, 2009 AT 11:16 AM