BADASS of New England

An automobile club for the enthusiast who enjoys the last of the big GM cars. The rear wheel drive B and D bodys. Chevrolet Impala SS, Caprice, 9C1, Buick Roadmaster, Oldsmobile Custom Cruiser, Cadillac Fleetwood
 
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 Temporary misfire when hitting bumps

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Tomz9C1

Tomz9C1

Posts : 1497
Join date : 2009-01-21
Age : 56
Location : Rumford, Maine

PostSubject: Temporary misfire when hitting bumps   Fri Jun 12, 2015 9:03 am

So I have this "temporary misfire" in my 95 B4U only when I hit decent sized bump in the road. Only the misfire goes away 15- 20 seconds and runs normal until I hit another bump. Last time I did plugs and wires was 2008, so I figured it was time to do it. Taylors and AC Delco 44LTS plugs. Took it on the worst road I could think of and temporary misfire remains. Going to wiggle the FI wires and see if that's the gremlin. Any input is appreciated. TIA

Tom
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toomanytoyz
Club President
toomanytoyz

Posts : 6880
Join date : 2009-01-20
Age : 42
Location : East Hampstead, NH USA

PostSubject: Re: Temporary misfire when hitting bumps   Fri Jun 12, 2015 10:44 pm

Check the wires and grounds at the coil. They are known failure points... Sometimes they look ok on a visual, but have lost continuity.

_________________
Bill "The Verb" Crovo - Resident Car Slut & Unicorn Hunter

A Toasted Marshmallow, A Long German, A Lame Suburban and expensive dreams...
Missing all my previous B's, D's and V... Sad
American Ricer
www.badassofne.net
"Ooooh! Look! Something shiny!"
NO MORE UNICORNS!!!!!

LOWER IT!!! Wink
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Tomz9C1

Tomz9C1

Posts : 1497
Join date : 2009-01-21
Age : 56
Location : Rumford, Maine

PostSubject: Re: Temporary misfire when hitting bumps   Tue Jun 21, 2016 8:12 pm

Ended Being 2 FI wires broken / frayed. Runs like a champ!
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