[Vwdiesel] Temp flasher

[Roger Brown]

Libbybapa at wmconnect.com wrote:
> I mentioned recently that a friend of mine purchased an '84 Quantum TD.  I 
> have been helping him get it roadworthy (timing belt, brakes, belts, etc.).  The 
> car sat for some time and seems to have its share of intermittent electrical 
> gliches.  The rear wiper will randomly turn itself on and wipe a few wipes.  I 
> think that I have that one corrected.  The starter will frequently just 
> click, but if you try to start it several times in a row it will finally crank.  
> The most irritating issue currently is that after it has been running a while 
> the temp flasher will flash.  The coolant level is fine.  The temp gauge rarely 
> goes above the flasher dot, and seems to register correctly given warmup time. 
>  Is the sensor for the flasher seperate from the sender for the gauge?  Which 
> is it?  At this point I would think it is closing at too low a temp.  I have 
> not used an actual thermometer the engine, but the cooling fan cycles on and 
> off and the flasher will flash even when the fan is not even on.  Also, as 
> mentioned, the gauge registers fine.  Any suggestions?

I think the flasher is run off the level sensor inside the expansion tank.  If the level is OK, then the sensor might be dirty 
(two metal probes that sense conductivity in the coolant), or it may be due to an incorrect coolant/water mix.  Some threads on 
this topic in the archives.

-- 
    Roger