Can A Car Run With Coil Wired In Reverse?
#83350
07/03/08 09:15 AM
07/03/08 09:15 AM
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Joined: Jan 2003
Posts: 1,019 Eau Claire, WI
ResQ911
OP
super gas
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OP
super gas
Joined: Jan 2003
Posts: 1,019
Eau Claire, WI
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Realized today my coil wires are reversed. The harness was cobbled up by the last guy and had red wire for neg and blue for pos. I assumed red was for pos and hooked everything up. Car ran but noticed error later and switched them to correct following wiring schematic. I didn't think car would've run with wires reversed. Now I am wondering if I might have fried anything.....it runs rough at idle now. Thanks for any help.
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Re: Can A Car Run With Coil Wired In Reverse?
[Re: ResQ911]
#83353
07/03/08 09:53 AM
07/03/08 09:53 AM
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Joined: Jun 2003
Posts: 21,397 It's a dry heat
gtx6970
Too Many Posts
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Too Many Posts
Joined: Jun 2003
Posts: 21,397
It's a dry heat
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Quote:
Will anything damaged by running it with wires reversed?? It seems to idle like crap now. Smooths out off idle but starts nice. Any thoughts?
As far as I know there's no real difference. I had a car several years back that came into the shop for a maintence tuneup with no running issues, he just wanted a tune up. When we hooked it up to the scope is when we noticed the pattern. I changed the wiring connections and never heard anything one way or the other
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Re: Can A Car Run With Coil Wired In Reverse?
[Re: resqguy]
#83355
07/03/08 10:33 AM
07/03/08 10:33 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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This will not DAMAGE anything.
My mind isn't what it once was, but I believe you won't have the POWER you should have in your spark output.
Back "in the day" of breaker points, this would cause short point life, as I recall.
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Re: Can A Car Run With Coil Wired In Reverse?
[Re: ResQ911]
#83358
07/03/08 12:19 PM
07/03/08 12:19 PM
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Joined: Jan 2003
Posts: 8,144 Arkansas
340727dart
master
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master
Joined: Jan 2003
Posts: 8,144
Arkansas
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A couple weeks after I got my '71 Dart /6, I discovered the coil was wired bass-ackward. The car started and ran OK but was definitely no speed demon. There's no telling how long it was like that. The guy I bought it from really hacked up all the wiring. It was only getting 14.6 mpg during that time. After I corrected the wiring the mileage increased to 17.8. It's still no threat to any speed records but it runs better.
Your life is not my fault. My life is none of your business.
Speech is free only if you agree with those in control.
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Re: Can A Car Run With Coil Wired In Reverse?
[Re: 69DartGT]
#83361
07/03/08 04:24 PM
07/03/08 04:24 PM
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Joined: Sep 2005
Posts: 12,481 Chino Valley
RodStRace
I Live Here
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I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
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It should start and run, but be down on power, especially over 55-60 MPH. Remember that most cars were positive ground until the 1950s. IIRC, the coil saturation and collapse is better when wired correctly.
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