First thing that comes to mind is cleaning all the contacts (at the
bulbs, both ends of harness for each and relay.)
Miguel

On Sun, Nov 22, 2009 at 4:39 PM, Don Hanson <dhanson928@gmail.com> wrote:
> I had the same problem with my flashers and it cleared itself up somehow.
> No fault with the turn signals or the parking lights or brake lights..just
> the left side E-flasher not working front and back...Walked away and came
> back...everything working...Huh?    must be the switch..I have another that
> maybe I will swap in just for fun...
>  Don Hanson
>
> On Sun, Nov 22, 2009 at 12:39 PM, Allan Streib <streib@cs.indiana.edu>wrote:
>
>>  Stephen Grisanti <bike2vcu@YAHOO.COM> writes:
>>
>> > I had occasion to use the flashers yesterday while jockeying three
>> > vehicles among two parking spaces and noticed that the left (driver's)
>> > side lights were not working.  Figuring the turns signals were out I
>> > tested them and found both right and left side turn signals work, each
>> > side blinking normally but not both together when in the emergency
>> > mode.  Has anyone encountered this on his/her van and isolated the
>> > cause of the problem?
>>
>> I don't know how they are wired but I'd suspect the flasher switch.  It
>> is a switch that is rarely used, so it's possible that it has corroded
>> internally and is not closing all the circuits that it needs to.
>>
>> Try operating the switch a few dozen times and see if the problem clears
>> up.
>>
>> Allan
>> --
>> 1991 Vanagon GL
>>
>