valium

removing and replacing the blub makes it work for a few times. Then it stops, so I get the "fast" indicator on the dash. Bulbs don't burn out, just don't work.

It sometimes works/doesn't work when activated. Any ideas?

84urq

Check the ground connection's
2nd remove the light assembly and look for corrosion @ all connection points

Colin

Kidquattro

...your light bulb isn't making a good enough connection. Easy peasy, lemon squeezy.

83QuattroCT

Had that happen on my 83, first the right side taillight marker wouldn't light and then the left went blinky super fast on occasion...I wound up presenting a different "permanent" approach to it, so easy,after popping out the steel connection "maze" from the actual plastic assembly ( be very slow and careful not to totally mangle the plastic "blobs" that hold the "maze" in place ) clean like you've never cleaned before..kill the corrosion that is hiding and festering to return when a cop sits behind you at a stoplight-turn, reassemble , press hard, take a flat tipped solder iron on low heat and firmly "remelt the plastic blobs down to hold the maze back in its proper home....works like new, lasts and lasts and gives a world of confidence in turn signal / taillights.

85urq

One of the connections in the "maze" was slightly overheated, and caused it to become undone.
Chris Semple hooked me up with a new used one for small change.