Hi Folks,
I went to start the 240d today & the glow plug indicator wouldn't light up - tried to start the car & no go!. (The engine & weather was cold)

I have power coming to the GP relay(via the big wire) & the 80a fuse is okay. When the key is in the "glow position I have no power to any of the glow plugs - or the terminals that come out of the GP relay & go to the glow plugs. I couldn't check the continuity of the glow plugs as my voltmeter won't do this. I also have voltage going to 2 of the terminals of the "smaller plug" - I think this brings power from the ignition switch.

The plot thickens as I took the GP relay apart & found that the O ring on the cover was broken & there was water in the relay- about 1/4 inch worth. I'm currently drying out the relay & will reinstall it tomorrow- hopefully my problem will be gone. I also lightly sanded a pair of points in the relay that looked pretty corroded.

If this doesn't solve my problem, where do I look next? Also, which fuse in the fuse box is responsible for the GP relay?

Sorry for the long-winded & vague terminology - my service manual hasn't arrived yet.

Aivars

Ps I scanned the archives & with that info. I got this far.