007_e350

Everything was fine till I revved the car before turning engine off (I'm stuuupid) and that's when something happened to glow plugs ... now the check engine stays on, what can I do to fix it

dieseldoc

Need to check for error codes

alx

usually its glow plug controller. about $150 and easy to replace.

plugs rarely go bad on the om642

fireman1073

my brothers e300 diesel om646 glow plug light lit so glow plugs changed (2 bad) then short time later same happens but glow plugs test good so glow plug controller did it

007_e350

Yesterday coming back from a 20 mile trip the trucks fan was blowing full speed, and I could smell something burning, I bet it's the glow plugs staying on or something... today I took out the glow plug controller situated right in front behind the dipstick, temp is 70 degs, I started the car to make sure burning smells gone, it took 2 tries to start but the burn smell is still there, is it possible some glow plug stays on even with controller not connected??

N_Jay

Maybe stop by a first department and let them, show you one of those cool infrared cameras.

It will show hot spots before you find them with burnt wires.
I understand there is a Glowplug relay as well as a controller. If that is true, maybe the relay is stuck.

007_e350

Do you know where's the relay located? Guess I'll start with that's it's $15 lol

N_Jay

https://mbworld.org/forums/gl-class-...ml#post7155987

007_e350

You were right Alex, as soon as I replaced the controller she fired up right away and check engine went off couple miles later.. it was pretty easy to replace too,
Also the parts woman told me there's been 3 revisions to this part and I was thinking it should ve been a recall then .. not at mb!!
Anyway, thanks so much Alex you're an asset to this forum!

N_Jay

Not anywhere.

Parts are revised all the time. Sometimes due to a problem, but often not.

Yes, the original controller did seem failure prone, but not near a recall level.

alx

Glad I could help.

Recalls are usually safety- related. Thus even if every single controller fails they are not going to arrange a recall campaign.

007_e350

On the x5 they recalled SCR tanks, that's not safety prone... front driveshaft was recalled that IS a safety issue, I guess there's no set rules

N_Jay

SCR Tanks are probably smog related.

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