I have a 1984 190D with a 2.2L engine. According to tests from a multi meter 2 of the 4 glow plugs were bad. Last night I changed all four glow plugs; it took a lot of patience because I did not remove the air intake.

The 80 amp fuse is fuse is fine and plugs and wires test fine. The car is starting fine without being plugged in as well. However my glow plug light still does not work. What is wrong?

About a month ago I was traveling and my ignition switch went out. When the shop fixed my car they gave me the car running so I did not notice that when they had it the glow plug light stopped working. When replacing the dash could they have messed up the light? If this is the case, what should I check?

The car hasn’t been driven much in the last month (since the glow plug light was broken). When it was driven I would turn the key and heat up the glow plugs a couple times, probably waiting 30 seconds each time and finally turning the full way. Is this bad on the plugs? Is that why I had two go bad?

If the glow plug light does not illuminate at all, its very possible they knocked the bulb loose or knocked it out of the socket completely. I would pull the instrument cluster and make sure its seated properly.

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Dennis
2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles.
2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner
1997 E300d Silver 300,000 miles As of Jan 05, 2010
3rd owner SOLD

Glow plug light is illuminated by a timer circuit in the Glow plug relay...if your bulb is good and its plugged in its possible that this is all thats wrong.

If the car starts easily don't sweat it too much, the important part is working.

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Proud owner of ....
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Dont know if a 190 is the same but on the 123s you remove the panel under the dash, driver side, The GP light and a couple others, plug into the back of the instrement panel. You can give the socket a half turn, pull it out and inspect the bulb. First see if the wires are pluged in. They could heve easly not put a wire back on.

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

Thanks for the advice! I'm going to check it out and I'll post what I find out.