Ignition resistor
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=602
Printed Date: November-22-2024 at 3:24am
Topic: Ignition resistor
Posted By: Guests
Subject: Ignition resistor
Date Posted: July-08-2004 at 9:17pm
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I have a '86 SN 2001 351 Ford. Does anyone know why there is a resistor in the ignition circuit? Someone who has worked on it has bypassed the resistor. It seems to run fine. But I would like to know why it is there. The dealer doesn't seem to know.
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Replies:
Posted By: 77stang
Date Posted: July-09-2004 at 1:43am
bypassing the resister is usually only done for diagnostic purposes (i.e. determine if the resister is broken) or in cases where not bypassing will leave you stranded on the water. the resister is there to protect the ignition system from excess current. yes your boat will run fine without it but you will likely fry your ignition system with prolonged bypass.
however, yours may be bypassed correctly if the previous owner upgraded to electronic ignition. at least i believe that those systems upgraded to electronic ignition are not required use the resister.
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Posted By: 66polyhead
Date Posted: July-09-2004 at 2:20am
A resistor is an electrical component, usually wire wrapped, that opposes the flow of either direct or alternating current. They are used to protect, operate, or control the circuit. In your case it is a 12 volt direct current resistor. It is used to control your ignition voltage, i.e, let a constant flow of 12 volts direct current to the ignition. A fully charged battery, or a faulty voltage regulator, or for instance, your alternator all can supply more than 12 v.d.c.
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http://www.correctcraftfan.com/diaries/details.asp?ID=220&yrstart=1925&yrend=1970" rel="nofollow - KY Wildcat
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Posted By: NAUTI84
Date Posted: July-09-2004 at 9:50am
James,
I just converted my 84 over to the electronic ignition & instructions were to bypass the resistor.
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http://www.correctcraftfan.com/diaries/details.asp?ID=421&yrstart=1981&yrend=1985 - EX-NAUTI84
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Posted By: David F
Date Posted: July-16-2004 at 12:31pm
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A direct quote from a PCM engine manual: "The coil provided is used with an external ballast resistor, which is designed to control the internal temperature of the coil windings. The resistor cannot be repaired in any way, and if defective, must be replaced."
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Posted By: 882001
Date Posted: July-17-2004 at 3:09am
you bypass for electronic conversion. its there to keep from burning up your points.
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kemah texas
http://www.correctcraftfan.com/diaries/details.asp?ID=163&yrstart=1986&yrend=1990 - 1988
skinautique "2001"
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Posted By: SS 201
Date Posted: July-17-2004 at 8:37am
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All points equipped vehicles, boats have ballast resistor, wire or resistor coils. Most electronic conversions bypass the resistor, some however require a coil change.
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