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Ford Ranger
Ford F-150
Turn Signals and Hazard Lights

What would cause turn signals to stop working intermittently?

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2015-07-17 17:41:47
2015-07-17 17:41:47

It sounds like a bad turnsignal switch to me, the way you describe it.

May have a bad flasher unit in the under dash fuse box, if all lights are working.

Could be a loose ground wire. Usually connected to a bolt on the frame near the rear axle.

Several possiblities that come mind. Turn signal switch, problem with a weak wire or connection that could be anywhere in circuit including between switch to fuse box to sockets, corrosion in sockets or a flasher or bulb. Sometimes bulbs filiments (the real fine wire you see in the bulb) can be weak braeak away temporarily but re-weld it self until it happens again.

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