That usually indicates bad plugs but who knows. It's all pretty simple, have someone turn the key on while you touch the relay and see if you hear/feel it click on or not. Heck you should be able to hear it click on and off from the drivers seat. If it does not then the relay is bad. If it does then pull the harness going out to the plugs and check the resistance. If too high or open the plug is bad.
Sent from my iPhone > On Dec 26, 2016, at 4:27 AM, Larry Turner via Mercedes > <mercedes@okiebenz.com> wrote: > > tried it again and nothing - this time I noticed the Dash GP Light is not > coming on at all but I know it used to. I haven't been the primary driver > lately so I haven't been watching the dash lights.. > > When I finally got it started (when this first started) I do recall the dash > light being on after I got it running. At the time I dismissed it - > > But I suspect you are saying because the dash light was on when the engine > was running it indicates a bad GP Warming Relay, right? > > Thanks! > > >> On 12/25/2016 7:54 PM, Kaleb C. Striplin via Mercedes wrote: >> Is the light coming on? Do you hear the relay click on and off? >> >> Sent from my iPhone >> >>> On Dec 25, 2016, at 6:46 PM, Larry Turner via Mercedes >>> <mercedes@okiebenz.com> wrote: >>> >>> Tried to do some last minute shopping Thursday and she wouldn't fire up >>> without some very extended cranking. >>> >>> It's very rare for it to take more than a few revolutions of the engine. >>> So I replaced all of the Glow Plugs just in case, but it didn't help. >>> >>> I don't think it is the Glow Plug Relay because it usually tries to start >>> after cranking for 10-15 seconds, but this time I am getting nothing! It's >>> not trying to start at all. Saturday before I changed the GPs, I got it to >>> start by cranking it. It started firing on 2 then three and finally it was >>> on 4 and 5 I think. >>> >>> BTW, I did a Oil Analysis on it last year and all the numbers came out >>> exactly where they should be. Very low metal contamination, no water >>> content and almost no fuel content. Also, the fuel mileage has stayed >>> stable at 30 mpg +/- 2 mpg. >>> >>> I will test the Relay tomorrow just in case. *Any ideas?* >>> >>> Thanks, >>> >>> LarryT >>> >>> '91 300D 2.5 Turbo >>> 280,000 miles >>> >>> _______________________________________ >>> 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 >> >> > > _______________________________________ > 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
