Hi Guys. Need a little diagnostic help.
My 1987 E-150 Van with a 5.8L 4bbl will not start when it is hot. During the summer it would run fine, but it had to cool off for at least an hour before it would start. Cranks fine - and no, I don’t think it is fuel, because I don’t even get a hint that it will start.
Lately, it stalls after 10 to 15 minutes of running and will not start for 4 hours (the longest I’ve had the patience to try) - but in the morning, it starts right up and runs like nothing is wrong - for 10 minutes.
I’ve changed the ignition module (the one on the fender), and the distributor. Coil is next.
I am sure this must be a heat related electrical problem, but what?