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Old Jul 30, 2011 | 08:34 AM
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Default crazy turn signals

My left side turn signals dont work. My emergency flashers and right side turn signals work just fine. All bulbs around the car flash like they should. Any ideas?

Sometimes old cars are a real PITA.

Bill
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Old Jul 30, 2011 | 10:13 AM
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My flashers work..fine...until..they..stop.



Then after a second or two they work again...

Very odd - not sure what to think about it. I figure I'll change the bulbs first and then the fuse but I don't think it's the bulbs or the fuse. If it was I'd think they wouldn't blink at all.

It's the 'odd' behavior that gets one scratching their heads - unless someone else has seen the same behavior and has an idea what to look for.
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Old Jul 30, 2011 | 11:34 AM
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St. Jude Donor '08-'09-'10
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i had trouble with the round blinker fuse not making contact properly in the fuse block. if my blinker wouldnt blink, id "nudge" the fuse with my foot, and it would start right up...
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Old Jul 30, 2011 | 12:48 PM
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Originally Posted by joshtried
i had trouble with the round blinker fuse not making contact properly in the fuse block. if my blinker wouldnt blink, id "nudge" the fuse with my foot, and it would start right up...
The round blinker fuse is not a fuse. That's the flasher. It interrupts the power on the supply side to the turnsignal switch, so if one side works but the other doesn't, it's not the flasher.

If the frt and rear turn signal filament light but don't flash on the left side check for proper bulbs. You may have a variable load flasher in the 4 ways which will flash at a regulated frequency regardless of load and a load specific flasher in the turn signal which will not flash if there is insufficient draw.

If they don't light at all on the lt side it is most likely turn signal switch or wiring to the switch.

When you have the left turn signal on what does the lt side brake light do when you step on the pedal? This will also help identify the problem as in the switch. The switch takes the brake light out of the circuit when that turn is activated.

Steve g
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Old Jul 30, 2011 | 01:39 PM
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Originally Posted by Steve2147
The round blinker fuse is not a fuse. That's the flasher. It interrupts the power on the supply side to the turnsignal switch, so if one side works but the other doesn't, it's not the flasher.

If the frt and rear turn signal filament light but don't flash on the left side check for proper bulbs. You may have a variable load flasher in the 4 ways which will flash at a regulated frequency regardless of load and a load specific flasher in the turn signal which will not flash if there is insufficient draw.

If they don't light at all on the lt side it is most likely turn signal switch or wiring to the switch.

When you have the left turn signal on what does the lt side brake light do when you step on the pedal? This will also help identify the problem as in the switch. The switch takes the brake light out of the circuit when that turn is activated.

Steve g
Is the round 'flasher' what I need to replace if my turn signals pause periodically?
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Old Jul 30, 2011 | 01:55 PM
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From: Celeste Texas
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There's a wire missing from the left rear light housing. Should be three wires but I only have two and a hole. Now I have to let it cool off so I can get my hands up in around my mufflers and find it.

Bill
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Old Jul 30, 2011 | 03:49 PM
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Originally Posted by wgarneau
Is the round 'flasher' what I need to replace if my turn signals pause periodically?
May or may not be. If you have an original style flasher (very light weight, anodized aluminum shell) it is a load dependent flasher. These were designed for the specific car they went in based on the number of bulbs that it was required to flash (one front and two rear per side let's say). If any one of the bulbs burnt out there would be insufficient load to cycle the flasher and the lights would come on but not flash. This was a design feature to let the driver know he had a bulb burnt out. And if you plugged a trailer light harness into the system (adding bulbs or load) the flasher would cycle far too fast.

Long storey short, you could have a bulb that's burnt where the broken filament periodically makes contact and the bulb works intermittently. Not at all uncommon for bulbs to behave that way when they fail. This will cause the lights to flash only intermittently.

If you have a variable load flasher (much heavier in weight and usually in a clear plastic housing where you can see a relay coil) it is most likely the flasher because it will always flash at the same speed regardless of how many bulbs are working.

Steve g
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