O2 sensors will cause these to run wierd. There are also potential issues with sticking a/f meter disc's. Pop the air cleaner off and see if the big disc is dirty, if so, clean it up with some carb cleaner, start the car and clear it out. (the carb cleaner will load it up badly.)

If the problem persists, check the o2 when its in the mood to mess up. You might find it readin full lean (.2v or so) I've taken and unplugged them while the car was acting up and had the car clear out instantly and run ok. From there the list gets progressivly longer and more complex. 1 car that comes to mind when you talk about what yours is doing was a 85 380 that had a warm up regulator that would flip out on hot soak and runs like azz for 5 -10 minites then clear out and runs fine.




Joe

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Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.
Raleigh NC
919-881-0364