The glow plug relay is dead again in my 87 300sdl. I popped the cover and replaced the 80 amp strip fuse, which looked pretty new and as suspected, it didn't help and it was dead. I took it into the dealer today and they alerted me that it need replacing again. The first 4.5 years I owned the car, and it could have had the original one, but now this is the 3rd replaced by the dealer in the last 3.5 years, all of them stopped working at least 13 months apart so they aren't covered.

The dealer thought the glow plugs were pulling too much reistance and recommended having them changed but they were all replaced 2 years ago, have less than 20k on them. I said no. Doesn't this seem out of the ordinary? Is there something else that could be going on or are the replacements known duds.

thanks a lot guys

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Jeff Weyer
'87 300SDL 228k