Have Ford Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Chris (aka Moose). I'm here to help 365 days a year, but not every hour of the day. I try to prevent delays as much as possible. Please understand I am not there and can only advise based on what you tell me. Let's get started.
Are there any warning lights on, codes stored?
Monitoring the MAF, LOAD, and TP are any of them reading incorrect?
Are you sure the correct PCM was installed?
Condition of the trans oil, color and odor?
When it stalled did it restart easily?
Which gears or shifts are having the most issues?
As a vehicle is driven the PCM retains memory and makes changes to things so they work there best. When you disconnect the batteries or remove or replace the PCM. That memory is lost and has to relearn on its own. Sometimes that takes a long while and sometimes the computer sees things so far out of specs it just can not adjust.
If the transmission is slipping while in gear, that is not a computer related issue, it only affects the shifts. Slipping is going to be a concern within the transmission at the forward and intermediate clutch or a pressure related concern. I would have the transmission pressure tested and the clutches air tested to see if an overhaul is needed.
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Hello Chris here again,
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