stuck in Vegas

[newmanterry]

where is the PCM located on a 2000 f53 chassis

[tderonne]

It's by your feet (when sitting in the driver's seat). Inside, not outside. There's a black cover over it.

Why? Is someone saying you need a new processor? That may be, but it is VERY rare for a processor to go bad all by itself.

[newmanterry]

no chasing a problem
I got a P0503, p0720, p0722, replaced speed sensors. Symptoms is after the coach warms up and when the coach stop for about 30 seconds, when we accelerate the coach feels like the brake are on and then it releases. we get a flashing OD and wont shift out of first correctly, the coach then sets above codes. Believe it is either ECM or PCM problem looking for information. Coach has been in Vegas for the last 2 weeks with no end in site.

2000 Pace Arrow
V10 4r100 with 12,000 miles
Banks Trans command
Banks Power Pack

[LVJ58]

Call Quality Ford 702 507-1500 here in Vegas, they're the Heavy Duty Ford equipment maintenance facility and work on motor homes. I have them do all the service on ours, good folks. Perhaps they can give you some help with your problem.

On further research, the 503 code involves the speed sensor and the 720 & 722 code involves the output shaft speed sensor with both sensors sending data to the PCM (power train control module)