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My Ford 460 runs great in the cooler months. I have a problem in the warmer climate, 60 degrees and higher. Especially when I am towing my boat (750 lbs). The engine sounds like it is missing, sputtering, and it will shut down eventually. I will let it cool and it runs fine for another ten miles or so and does it again and again. If I take the dog house off when it happens it will run very well. I have put a new Ford ignition module on it, new stater, new coil, and had it retimed. This engine is a '90 on an '89 coachman class c.
I can never rember when ford went to injection on these. Carborated it sounds like vapour lock. Injected it sounds like the ignition box went bad. The ignition box can be very heat sensitive as can the the pickup. The next time it quits look for spark. No spark then you need to figure out what is wrong. If you have spark you are looking for a bad relay that controls the fuel pump or similar. Good Luck
email Chris Takach
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