[Vwdiesel] No glow, update

[Roger Brown]

LBaird119 at aol.com wrote:
> Doubt its related, by my alarm armed itself while I was driving, twice on the 
> way to work.  I think I have a bit of a wiring problem.
> 
> 
>   My glow plug light was acting up on the Jetta last year.  Checking/cleaning 
> 
> grounds took care of most of it.  After that it'd only blink if I had the fan 
> on 
> med or high and then flip on the wipers.  It'd blink each time they cycled.  
> Finally replacing the relay solved it but at least it made me fix some 
> small, marginal areas first.  :-)  Of course my relay has the timer built 
> in.

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.

-- 
    Roger