[Vwdiesel] Lost glow today

[Bjørnar Huse]

Hello!

New to the list, but not diesels. Have had VW and other diesels in the past,
from 1.6 NA and up to a tuned and chipped Excursion 7.3 td with around 330
hp.

My A6 2,5 V6 just lost its glow. I have a suspicion it happened due to
plugging and unplugging a Tunit box from Bromley's diesel tuning (UK,
similar to KCR box in Sweden and probably other branders of the same box
manufacture).

I hotwired the plugs and they work. Fuses are OK, Relay works out of the
car, but does not click when in position. It could be that the sensor for
engine temp reads wrong, but shouldn't the glow plugs light anyway, even if
the ECU thinks the engine is warm? (Reason I think this is because it
started relatively easy this morning at +2 C).

Does anyone know which sensor sends the engine temp to the ECU? (oil and
water temp gages read correct). Alternately; does anyone know which wire
(color) triggers the plug relay, so that I can hotwire a momentary switch to
glow the engine manually?

Bjørnar Huse
Heimdal 25
N-6020 Ålesund, Norway
www.bgnett.no/~bjornar <http://www.bgnett.no/~bjornar>
Tel. 41555 411 Fax 95 56 73 91
1999 Audi A6 2.5tdi Quattro Avant
1981 Range Rover 3500 V8 man.
1947 Studebaker M-15