Left turn signal won't work, but hazards work fine.

Left turn signal won't work, but hazards work fine.

Postby nycdude [OP] » May 30th 2010, 3:21am

Hi all,

1986 Astro here. Both the front and rear left turn signals won't blink when I use the stalk. The right side works fine. When I use the hazard lights, everything lights up fine. What's wrong here? A fuse? Or a flasher?
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Re: Left turn signal won't work, but hazards work fine.

Postby tedanderson » May 30th 2010, 3:33am

I had that problem today as a matter of fact.

I knew it wasn't the fuse because they worked intermittently. To test it, do the following:

1. Pull your fuse. If it's blown. Replace it. If not, proceed to step 2.

2. Turn your key to the ON position and then sit in the step well of the driver's door which essentially puts your ear at the same level as the fuse panel. Pull your stalk down to engage the left signal and listen carefully for the click (or more of a 'toing' sound') coming from the flasher relay. Put the stalk back in the middle and you might have to wait 3-5 seconds for the flasher to click again indicating the release. If it does this, you know your flasher is bad.

NOTE: There are TWO flashers. One for the hazards and one for the turn signals. The one for the turn signals is the one that is easier to access.
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Re: Left turn signal won't work, but hazards work fine.

Postby astroturf » May 30th 2010, 3:34am

nycdude wrote:Hi all,

1986 Astro here. Both the front and rear left turn signals won't blink when I use the stalk. The right side works fine. When I use the hazard lights, everything lights up fine. What's wrong here? A fuse? Or a flasher?


I would look at the stalk. Jim
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Re: Left turn signal won't work, but hazards work fine.

Postby Big_kid » May 30th 2010, 5:00am

When mine did that it was the switch. The left side went out, then came back, then went out, then would work if I held it in the lane change position but not if I engaged it fully. Replaced the switch (and flasher), no more problems.
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