Was it thumping before it shut down, or only after you replaced the distributor cap
Didn't notice any sounds while I was driving. I was going about 50mph
Only noticed the thump sound once I got her restarted
So I was going about 50 on the freeway, truck shuts down, able to coast off onto the streets, open hood and find distributor cap off and the distributor had moved off time.
Ill check the distributor first.
Very strange to see the distributor cap laying to the side.
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