[Vwdiesel] ROGRS, the glowplug killer disease

[Val Christian]

> Some of the relays I tested exhibited that sort of problem with out of spec temp sender inputs.  One I recall would turn on 
> randomly and stay on for random amounts of time at any sort of electrical noise.  I think some of the timer designs are not very 
> stable, while others are rock solid, very immune to noise and out of spec signals.


The random on glowplug relay syndrome  (ROGRS for short) is the most
common failure modality on early Rabbit glowplug systems.  The
backup instrument for observation is the dome light.  If you find that
your idle speed drops without explaination, turn on the dome light.
If that's dimming, at idle, you may very well be suffering from ROGRS.

Sort term fix, is put the relay in for starting, and remove for driving.

Val  "Patch'em to keep 'em rollin'"