Running like #^#*
 

Ok so I have a 1991 bronco with the 5.8. It ran perfectly for ever. New fuel pump filter regulator. All of a sudden it died on me. Now when it's cold it still runs fine but when it gets warm it just quits. It get worse the more I try to start it. But if I wait till the next morning it runs fine again until it gets warm.

I ran codes and it came up with : 40 46. 21.

Heeeeeeelp

Sounds like either a bad PIP sensor or coil. Let's wait to see if someone knows these codes, otherwise the parts I mentioned should be the cause (my guess).

Ditto on the PIP sensor

Have the distributor rebuilt with all new parts.