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Violent shaking at 35+ mph.

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Old Jun 28, 2016 | 08:05 PM
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Violent shaking at 35+ mph.

Hi everyone, I have a 2002 F250 with the 5.4 triton engine. Automatic transmission. When I reach 35 mph (sometimes sooner) the truck will shake horribly when I reach lower rpms. It will do this up to 65 mph and then it mostly stops. Completely taking my foot off the gas will stop the shaking, as well as shifting into neutral.

I know for sure that the truck has a cylinder 3 misfire as well as a minor exhaust leak, could either of these be causing it? Don't have the money to fix either of the problems for another couple weeks, is it safe to drive until then or should I play it safe?
 
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Old Jun 28, 2016 | 08:10 PM
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Don't drive it that way. More stuff will break, and with a misfire, if you haven't cooked the cat already, you will soon.
 
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Old Jun 28, 2016 | 08:15 PM
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Originally Posted by 85e150six4mtod
Don't drive it that way. More stuff will break, and with a misfire, if you haven't cooked the cat already, you will soon.
Figured it was a bad idea. Guess i'll be biking to work for a couple weeks.
 
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