[Vwdiesel] Dying Glow Plug Relays???

[paulr]

Mark,

Yeah, it does seem like relays are getting killed.
After 3 weeks the relay(s) no longer stay on more than a
fraction of a second hot or cold.

Thanks for your comment about battery voltage.  I went
outside and checked it.  It was 12.5 volts (eng. off)
and 14 volts (engine on.)  Sound about right?

Thanks,

Paul

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Mark Shepherd wrote:
> Hi Paul are you saying that the relays are being killed?.
>  Can't see as harness corrosion would do that because:
> Relay resistance is near zero through switched power to GP's which
> have a  combined resistance of 1/4  ohm ish. So any corrosion
> increases the resistance and increases the mismatch from battery
> supply internal resistance and so decreases power transfer...
> Can it be that your voltage regulation is running too high and
> overloading the relay?
> 
> Miser
> 
> Hi everyone,
> 
> I have a 2000 Golf TDI. The "original" glow plug relay
> failed 2 months ago.
> 

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Paul Reich                Electrical Engineer

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