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What would cause my 1990 454 ltd to cut out after speed of 50 mph?

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If it was stored for the winter the high speed jets are probably gummed up. This is at least worth a try. Go to an Autoparts store and buy some Sta-bil, that is a brand name fuels gel and varnish remover. I often find this is all that is necessary to get a unit running right after storage. Mix it a little stronger than one ounce to five gallons. good luck hope this helps.

Posted on May 11, 2014


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Posted on Jan 02, 2017

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SOURCE: I have a 1994 1100 Shadow California 4 speed

does it get a buzz at around 70 if it does welcome to the world of 4 speed trannies. this is some thing that does happen and as the trannie gets older it will go away as the teeth are getting set into place. you may want to check the level of fluid in your trannie though that may help you out a lot

Posted on Sep 03, 2009

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