Re: [MBZ] Cheap preglow relay fix
David Kristin Gilmore wrote: Recently when I went to start my 83 SD I had no dash glow light and the engine wouldn't fire. I traced the problem to the preglow relay (black plastic box about 3X3X2 on the fender behind driver's side headlight). There was voltage accross the 80 amp strip fuse but nothing was getting to the glow plugs. Manual override works, but it's a step down IMO. IF there were two leaky capacitors on the board, you might have fixed the relay for the cost of a couple caps and a few minutes with a soldering iron. Mitch. ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cheap preglow relay fix
Personally I would prefer to keep the car as it was intended, but thats just me. On 11/2/2010 8:37 PM, David Kristin Gilmore wrote: Recently when I went to start my 83 SD I had no dash glow light and the engine wouldn't fire. I traced the problem to the preglow relay (black plastic box about 3X3X2 on the fender behind driver's side headlight). There was voltage accross the 80 amp strip fuse but nothing was getting to the glow plugs. I took off the relay, removed the 4 screws at its edges and slid the contents out. A solenoid and a circuit board which looked mostly OK except for two little canisters that had leaked out beige goo. Brother Rusty prices this relay at $189. When I googledpregow relay bypass I found some have replaced it with a fender mounted starter relay of the Ford type actuated by momentary contact button switch. The attached pictures show my adaptation of this approach - I left the original relay there to use the wiring connecters and 80 amp fuse. (Before I put it back together I rigged it so it would always be on.) $14.99 for the solenoid, $4.99 for the switch, both from Autozone. You lose the dash light function. But it is easy to start counting seconds when you hear that SNACK sound. Dave Gilmore, Cameron WV Our waking dreams feature money everywhere but in our sleeping dreams it is strange and rare. -- next part -- A non-text attachment was scrubbed... Name: 0029.jpg Type: image/jpeg Size: 110352 bytes Desc: not available URL: http://okiebenz.com/pipermail/mercedes_okiebenz.com/attachments/20101102/b963767c/attachment.jpg -- next part -- A non-text attachment was scrubbed... Name: 00311.jpg Type: image/jpeg Size: 78181 bytes Desc: not available URL: http://okiebenz.com/pipermail/mercedes_okiebenz.com/attachments/20101102/b963767c/attachment-0001.jpg ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1144 / Virus Database: 424/3219 - Release Date: 10/25/10 Internal Virus Database is out of date. -- Kaleb C. Striplin/Claremore, OK 95 E300, 94 S500, 92 500SEL, 92 300SD, 92 300E 4Matic, 91 350SDL, 91 300D, 89 560SEL, 87 300SDL x2, 85 380SE 5.0 Euro, 85 190D, 84 190D, 84 300D euro manny, 76 240D, 76 300D, http://www.okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cheap preglow relay fix
I'll bet there are people who'd pay shipping to get the dud relay, those things are easy enough to repair. Walt On Tue, Nov 2, 2010 at 9:37 PM, David Kristin Gilmore dandkgilm...@frontier.com wrote: Recently when I went to start my 83 SD I had no dash glow light and the engine wouldn't fire. I traced the problem to the preglow relay (black plastic box about 3X3X2 on the fender behind driver's side headlight). There was voltage accross the 80 amp strip fuse but nothing was getting to the glow plugs. I took off the relay, removed the 4 screws at its edges and slid the contents out. A solenoid and a circuit board which looked mostly OK except for two little canisters that had leaked out beige goo. Brother Rusty prices this relay at $189. When I googled pregow relay bypass I found some have replaced it with a fender mounted starter relay of the Ford type actuated by momentary contact button switch. The attached pictures show my adaptation of this approach - I left the original relay there to use the wiring connecters and 80 amp fuse. (Before I put it back together I rigged it so it would always be on.) $14.99 for the solenoid, $4.99 for the switch, both from Autozone. You lose the dash light function. But it is easy to start counting seconds when you hear that SNACK sound. Dave Gilmore, Cameron WV Our waking dreams feature money everywhere but in our sleeping dreams it is strange and rare. -- next part -- A non-text attachment was scrubbed... Name: 0029.jpg Type: image/jpeg Size: 110352 bytes Desc: not available URL: http://okiebenz.com/pipermail/mercedes_okiebenz.com/attachments/20101102/b963767c/attachment.jpg -- next part -- A non-text attachment was scrubbed... Name: 00311.jpg Type: image/jpeg Size: 78181 bytes Desc: not available URL: http://okiebenz.com/pipermail/mercedes_okiebenz.com/attachments/20101102/b963767c/attachment-0001.jpg ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cheap preglow relay fix
My '78 240D has an even more simplified version of this in that the relay powers the glows directly (old series type plugs). I actually spent some time eyeballing my '83 240D last night for what I'd need to pull to make the newer type relay work. I'm tired of holding the button for 60+ seconds now that its getting cooler. I want new type plugs and an automatic relay. -Curt Date: Tue, 02 Nov 2010 21:37:31 -0400 From: David Kristin Gilmore dandkgilm...@frontier.com To: Mercedes Discussion List mercedes@okiebenz.com Subject: [MBZ] Cheap preglow relay fix Message-ID: 20101103013731.712a610f...@relay02.roch.ny.frontiernet.net Content-Type: text/plain; charset=us-ascii; Format=flowed Recently when I went to start my 83 SD I had no dash glow light and the engine wouldn't fire. I traced the problem to the preglow relay (black plastic box about 3X3X2 on the fender behind driver's side headlight). There was voltage accross the 80 amp strip fuse but nothing was getting to the glow plugs. I took off the relay, removed the 4 screws at its edges and slid the contents out. A solenoid and a circuit board which looked mostly OK except for two little canisters that had leaked out beige goo. Brother Rusty prices this relay at $189. When I googled pregow relay bypass I found some have replaced it with a fender mounted starter relay of the Ford type actuated by momentary contact button switch. The attached pictures show my adaptation of this approach - I left the original relay there to use the wiring connecters and 80 amp fuse. (Before I put it back together I rigged it so it would always be on.) $14.99 for the solenoid, $4.99 for the switch, both from Autozone. You lose the dash light function. But it is easy to start counting seconds when you hear that SNACK sound. Dave Gilmore, Cameron WV ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cheap preglow relay fix
David Kristin Gilmore wrote: Recently when I went to start my 83 SD I had no dash glow light and the engine wouldn't fire. I traced the problem to the preglow relay (black plastic box about 3X3X2 on the fender behind driver's side headlight). There was voltage accross the 80 amp strip fuse but nothing was getting to the glow plugs. Mitch Haley wrote: Manual override works, but it's a step down IMO. IF there were two leaky capacitors on the board, you might have fixed the relay for the cost of a couple caps and a few minutes with a soldering iron. I prefer the manual method. Hold the button for as long a glow as I need. I did that to the series plug 123 I converted to parallel - and have often considered doing it to the others. But they are currently working, so I've not disturbed them (yet). --Philip ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cheap preglow relay fix
Or you could go nuts and spend a couple bucks on new electrolytic capacitors and replace the bad ones. Peter ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
