Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

 
 
LinkBack Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 12-28-2011, 10:17 PM
VW1300's Avatar
Registered User
 
Join Date: Feb 2007
Location: Just west of Baltimore
Posts: 465
Is my glow relay dying?

I'm having some issues on cold morning starts. Engine cranks and cranks and eventually starts, but it used to start easier. Valves were last adjusted 7000 miles ago, last January by an experienced MB mechanic.

I checked the glow plugs, all show around an ohm or less. The fuse strip in the relay box seems to test good. When I measure its voltage vs ground with ignition off, it shows 12.4V. As a buddy turned the ignition to the "run" position, the box clicks and voltage on the strip drops to 10V for 2 seconds, then returns to 12V. The glow dash light never comes on, hasn't for several years. When we did this test, the car had been sitting out all day, about 55F.

Seems to me I should get a bigger voltage drop if I want these plugs to get nice and hot, and for longer than 2 seconds at that. Is my relay toast?

Thanks,
__________________
Charlie

---------------------------
'66 VW 1300 96K miles
'97 E300D 239K miles
'85 300D 203K miles (sold Sep 2012)


Reply With Quote
 

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 08:59 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page