1990 Ford 5.0 HO. stalling out when outside temp is over 105?
I have a 5.0 HO in my 65 Ford Mustang. Summer temps here in the desert go above 105 quite often. Two weeks ago I replaced plugs, plug wires, distributor cap and rotor as part of my maintenance schedule. My car has "stalled' on me several times on my commute home during the hottest part of the day. I have replaced external fuel pump and filter and the problem is still the same. Pump was quite old anyway.
Will be driving along, temp gauge is still below H, engine just starts to cut out like its not getting any fuel and will quit. Sit on the side of the road for 30 minutes and it will finally start up and I can finish the drive home. This just started this summer, the last 2 years I did not have this problem and it was even hotter then. Any ideas? I have a new aluminum radiator that I have been meaning to put in, not sure if it will help this problem though.