Larry. Are you measuring the wiring to each GP from the socket pins? If so then the wiring is good.
If all 5 GP's are 0.0 ohms from the socket pin to ground then they have a very low resistance to ground. This could be because of the limitations of your meter or they are all shorted to ground, either internally or externally. The cold resistance of GP's is very low and inexpensive meters may not be able to discriminate between 0.0 ohms and 0.8 ohms (or there abouts). Have you tested your meter on a loose GP to find out what the indicated resting resistance is? This will give you a benchmark to measure the plugs installed in your engine. Q. What brand of glow plugs are currently installed? If they are not Bosch or Beru they will have a short life. (no pun intended). If you need to ask more questions I can confuse you to a much greater degree. Fred Moir. Lynn MA. Diesel preferred. ________________________________ From: Mercedes <mercedes-boun...@okiebenz.com> on behalf of Larry Turner via Mercedes <mercedes@okiebenz.com> Sent: 01 January 2017 12:11 To: mercedes@okiebenz.com Cc: Larry Turner Subject: Re: [MBZ] HELP!! My '91 300D is Not Starting OK, Have been thinking (always a bad thing) and it seems if I have 0.0 Resistance to all 5 GPs. Using the 5 socket plug that is To me that says the GPs are not grounded but it appears that means the new GP Relay is bad, correct? Is that an appropriate assumption to make? Are there other tests I should make? Thanks! LarryT 91 300D On 12/31/2016 8:44 AM, Curley McLain via Mercedes wrote: > ok that is good that the fuse does not blow. Sounds like I was wrong > about a GP grounding. do you have any way to check for 1.2 to 1.7 > ohms from the GP plug at the relay to ground? Chances are that you > still have a bad relay. If the GPs are plugged in and the fuse does > not blow, then the relay is likely bad. If #1 GP is bad or the relay > is bad you won't get a light. > > I don't remember if you said, are the new GPs Bosch? > > > A bad relay might indicate that the old GPs are still ok, or at least > most of them may be ok. Check the old GPs for 1.2 to 1.7 ohms. Keep > the good ones. If the reading is anything over 0.0 ohms, chances are > good that that GP is still good. When I change a set, I keep the good > ones for replacing single GPs With 2-6 diesels at various times, I > can use up old GPs in something. They last forever on the shelf. > >> Larry Turner via Mercedes <mailto:mercedes@okiebenz.com> >> December 31, 2016 at 4:38 AM >> Hey Curley, >> >> OK, no more blown fuses - so I must not have any shorts. Does the >> light not coming on in the dash indicate one of my new GPs is bad? >> >> Man, I am not looking forward to removing that intake manifold >> again. But if I must so be it. I now have 10 new and used GPs to >> work with. I will check the old ones for shorts or buy a new set if >> need be. >> >> Thanks for your help! >> >> LarryT >> >> >> >> >> _______________________________________ >> 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 >> >> Larry Turner via Mercedes <mailto:mercedes@okiebenz.com> >> December 30, 2016 at 3:54 PM >> Thx Kaleb, >> >> The relay in my 91 is a replacement, I replaced it a couple years >> after I bought it. >> >> Well, I have more fuses and a new relay so I plan to put the new >> relay in and see what happens. Actually that's a easier procedure >> than trying to reach all those GPs with a MM. Worst case, I'll >> pull the fuel lines and take a closer look at the wiring harness. >> 1st things 1st, ;-) >> >> Thanks for the help gang! >> >> LarryT >> >> 91 300D >> >> >> >> >> _______________________________________ >> 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 >> >> Larry Turner via Mercedes <mailto:mercedes@okiebenz.com> >> December 30, 2016 at 10:22 AM >> What's the cut off for "New" vs "old"? or is it all 602 & 603? I >> ask because the relay from the dealer for my '91 came with a fuse >> across the bottom. >> >> Thx >> >> Larry >> >> >> >> >> _______________________________________ >> 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 >> >> Larry Turner via Mercedes <mailto:mercedes@okiebenz.com> >> December 29, 2016 at 7:51 AM >> Thanks, I guess MB didn't issue one for the W124 602 engine? >> >> LarryT >> >> 91 300D >> >> >> >> >> _______________________________________ >> 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 >> >> MG via Mercedes <mailto:mercedes@okiebenz.com> >> December 28, 2016 at 4:07 PM >> 15-710 >> >> >> >> _______________________________________ >> 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
