I have a 92 mazda 929. Left turn signal sometimes works, sometimes dose not. I took to shop, and mechanic could not find anything wrong with it. Any sugesstion on what could go wrong please. Thanks!

 

Were they not able to get the problem to happen or just not able to determine cause while it was failing? Can be next to impossible to diagnose an intermittent electrical problem if it will not do it. I can give you some things to check while it is failing if you have a simple 12 volt test light.

 

We need more info what is happening when the problem occurs. For instance, does it just stay on constantly, does it not come on at all? It can be anything from a bad bulb, a bad bulb socket, a loose wire connection, or even a turn signal switch.