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peggyfran1
User

Jan 17, 2010, 10:34 PM

Post #1 of 3 (2913 views)
coil Sign In

just a question. what does the coil do and how can you tell if you have a bad one.1985 gmc 1/2 ton truck 350 cu. in.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jan 17, 2010, 11:01 PM

Post #2 of 3 (2911 views)
Re: coil Sign In

A standard test is...........
On this engine the carbon spring loaded "thing" as seen from under cap may be broken??

T




asleepatdawheel
User
asleepatdawheel profile image

Jan 18, 2010, 1:53 AM

Post #3 of 3 (2905 views)
Re: coil Sign In

The Coil on that Vehicle is on top of Distributor cap..A coil is a component that generates spark from a signal that is sent from the pick up coil(inside distributor),, through the ignition module..In My experience of owning chevy trucks,, its good to check ignition module and pick up coil to determine if you are getting a proper signal to the coil... A good shop manual will also assist you in any questions you have in testing of these components... If you dont have access to one then try the library...Smile
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