high speed misfire

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after 5 miles at 65 engine appears to loose power, shakes a bit but keeps speed. did not repeat at 55. got home hooked up OSB monitor and got trouble codes P0300, P0303, P0304, P0305, and P0307: Random Misfire, cylinders 3-4-5-7 misfire detected. its been raining alot. van runs on highway almost all of the time at 65-67. My first thought is the distributor cap and rotor, van only has 65K miles on it. suggestions?

broken-e350 in Woodville WI

Jun 15, 2010

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RepairPal Certified shops can diagnose and repair your 2006 Ford E-350 Super Duty. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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high speed misfire

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broken-e350 in Woodville WI

Jun 15, 2010

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user91328on Jun 15, 2010

no cap and rotor. has coil over plugs. i suggest replacing all plugs and coils. Roy

broken-e350on Jun 15, 2010

Thanks, I'll give it a try

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patrick mannionon Jun 15, 2010

Agree with Roy have seen intermittent coil failure on these.

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Popular Answer

What are the best Ford repair shops?

RepairPal Certified shops can diagnose and repair your 2006 Ford E-350 Super Duty. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.