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Old 12-20-2010
Thread Starter
Join Date: Dec 2010
Location: clinton, sc
Posts: 10
Weird sympton/blinkers ALL four blinkers work.

However, they are flashing fast (like there's a bulb out)


EDIT: Sorry for Typo in Subject line.

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Old 12-21-2010
jtfoxman's Avatar
Join Date: Jun 2005
Location: The Poconos
Posts: 891
There's a post above this one. Same problem but only 1 light.
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Old 12-21-2010
Join Date: Oct 2010
Location: aspers, PA
Posts: 801
yup look for that one, this guy knows his stuff about turn signal

Originally Posted by bidwell View Post
The coil either has continuity or not = good/bad. The flashing is caused by a bimetal strip that gets warm from resistance and moves the contact away breaking the circuit. This "strip" is matched to the resistance of the stop bulb's filament for a medium flash rate. Since one side flashes medium, there must be a problem with the other side's bulb or wiring resistance.
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Old 01-09-2011
fredfx4's Avatar
Join Date: Jun 2006
Location: quebec canada
Posts: 203
what year, had the same trouble on a friend b4000 2000. After looking at the evident cause (light burned), tried my flasher relay in his truck. Turned out the relay was bad.
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Old 01-09-2011
kiltro's Avatar
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Join Date: Aug 2010
Location: Atlanta
Posts: 376
might be low on blinker fluid

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Old 01-09-2011
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Did you change your bulbs to LEDs, that may cause the problem, special flasher needed for LEDs.

Since it is all lights then there has to be a common cause.

As stated check the Flasher Unit in the Fuse Panel.
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Old 01-09-2011
Join Date: Jan 2011
Location: quakertown, pa
Posts: 3

I have to agree the only time I have seen fast blinkers was with a bad relay replace the relay good luck, TK
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