Thread: 300 tdi glow plug relay

Do you even need the glowplugs up there ?, mine havent worked for a few years after my alarm spider gave up.
Not 100% sure those incidents are related but seems logical, where is the relay located ?

Maybe this might help.


DESCRIPTION AND OPERATION
Glow Plugs
Glowplugs are fitted to the TDi engine to assist starting. A constant battery feed
is supplied by fusible link 3 (C907-3) to the glow plug timer (C189-5) on a
brown wire. When the ignition switch is turned to position "II", a second feed is
supplied to the glow plug timer (C189-3). This triggers a feed (C189-6) to the
glow plugs.
With the ignition switch in position "II", the glow plug warning lamp (C230-4) is
provided a feed via fuse 17 (C580-33) of the passenger compartment fuse box
on a white wire. The warning lamp (C233-10) is connected to the glow plug
timer (C189-2) by a yellow/black wire.
When the glow plug timer provides a feed for the glow plugs (C189-6), it
simultaneously provides an earth path (C189-4) for the warning lamp. After a
set period, feed to the glow plugs, and the earth path for the warning lamp are
cut; extinguishing the warning lamp.

On a 300TDi, we don't even need glow plugs here in the UK...

Personally, I'd just ignore it.

M

Originally Posted by jboot51

Maybe this might help.


DESCRIPTION AND OPERATION
Glow Plugs
Glowplugs are fitted to the TDi engine to assist starting. A constant battery feed
is supplied by fusible link 3 (C907-3) to the glow plug timer (C189-5) on a
brown wire. When the ignition switch is turned to position "II", a second feed is
supplied to the glow plug timer (C189-3). This triggers a feed (C189-6) to the
glow plugs.
With the ignition switch in position "II", the glow plug warning lamp (C230-4) is
provided a feed via fuse 17 (C580-33) of the passenger compartment fuse box
on a white wire. The warning lamp (C233-10) is connected to the glow plug
timer (C189-2) by a yellow/black wire.
When the glow plug timer provides a feed for the glow plugs (C189-6), it
simultaneously provides an earth path (C189-4) for the warning lamp. After a
set period, feed to the glow plugs, and the earth path for the warning lamp are
cut; extinguishing the warning lamp.

Thanks for that jboot I had that part worked out. What I can't work out is the red and white wire goes from the starter solinoid to terminal "50" on the glow plug relay is supose to interupt the relay so the glow plugs stop opperating while you are cranking but on the new relay when you connect the power supply to terminal 5
"50" it makes the relay stay on for longer.
I hope I have explained the problem a bit clearer.
Thanks for all the input.
Cheers
Rod

They don't cut in until some ridiculous temperature below freezing.

usually means the contacts are getting sticky.

Hi Dave
I was thinking along the line that the relay might be faulty as it is a brand new relay.
Cheers
Rod

Originally Posted by Blknight.aus

usually means the contacts are getting sticky.