Hey All-
Not sure about the condition of the glow plugs in the 190d- but if the rest of the car is any indication of the service provided by prev-owner they need to be swapped.

I'll be picking up 4 Bosch 8006 glow plugs for it- and I read somewhere that these were the same plugs used in the "Fast Glo/Afterglo" system. Would there be much advantage to swapping out the glow plug relay at the same time- and if so, is there a part number for the relay in the "fast glo" system I should be looking for?

Thanks in Advance- John

Unlike most original relays (depending on model year), the new relay will provide post-glowing (i.e. the plugs will be active for a short period after the engine starts). This feature makes the engine run much more smoothly after a cold start.

With the original relay, the engine will start fine, then after about 5 seconds, the plugs cool and it runs a little rough and smokes a tiny bit. Then, it smooths out after about 20 seconds once the engine starts to heat up.

With the new relay, you skip the brief rough-running and smoking phase; it runs smoothly all the time. It makes a big difference if you live in a colder climate.

I put the new relay in my 190d, and left the old glow plugs alone. The new relay makes a big difference.

For part numbers, see http://www.peachparts.com/shopforum/showthread.php?t=122555

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1989 250TD Wagon 5-speed, 160,000mi ::: Dark gray metallic / black cloth
1984 190D-2.2 5-speed, 287,000mi ::: Silver-blue metallic / black MB-tex ::: SOLD