I went to Ace hardware and got a test lamp. The relay has power. I then tested a singular glow plug and it had no power so I proceeded to inspect the harness from the relay to the plugs and found that it was chafed and had visible conductor material. If the wire to one or even some of the plugs was affected then there would still be some glowing action but there is none. The glow plug light would do some thing like not turn on and then once the car starts, turn on for so many seconds. Therefore I suspect that the ground wire is shorted. Is it worth it to try to repair the harness? Should I try to find a new harness?
Sent from my iPhone > On May 11, 2023, at 2:55 PM, Randy Bennell via Mercedes > <mercedes@okiebenz.com> wrote: > > Is there power at the relay? > Is there a fuse before it? > Are there ground connections that need to be cleaned? > > Randy > > >> On 11/05/2023 1:48 PM, Dimitri Seretakis via Mercedes wrote: >> So I replaced the GP relay on the 1990 300D 2.5T but it’s still not glowing. >> Light does not come on at all. I was able to start the car as some suggested >> after cranking for quite a bit. I replaced all the glow plugs a couple of >> years ago so I don’t think that’s the issue either. It must be some thing >> before the relay. Is there some kind of control in the ignition switch or >> something? >> >> > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
