News: Putting FUN and FRIENDLINESS, FIRST into owning and learning about AMC small bodied cars, primarily Eagles, Spirits and Concords as well as vehicles built in AMC's Mexican subsidiary, VAM.

The AMC Eaglepedia can now be accessed using the buttons found below  This is a comprehensive ever growing archive of information, tips, diagrams, manuals, etc. for the AMC Eagle and other small bodied AMC cars. 

Also a button is now available for our Face Book Group page.


Welcome to the AMC Eagles Nest.  A new site under "old" management -- so welcome to your new home for everything related to AMC Eagles, Spirits and Concords along with opportunities to interact with other AMC'ers.  This site will soon be evolving to look different than it has and we will be incorporating new features we hope you will find useful, entertaining and expand your AMC horizons.

You can now promote your topics at your favorite social media site by clicking on the appropriate icon (top upper right of the page) while viewing the topic you wish to promote.


  • March 28, 2024, 07:45:42 AM

Login with username, password and session length

Author Topic: 'Big Cap' ignition upgrade (the saga continues): grounding question  (Read 2485 times)

0 Members and 1 Guest are viewing this topic.

Offline johnbendik

  • Eagle DL
  • ***
  • Posts: 176
  • Thumbs Up 20
I am troubleshooting some new problems after doing an ignition upgrade (big cap and rotor, 8 mm wires, new plugs at .045 gap, Pertronix 3 ohm coil, resistor bypass, and new BWD CBE7P ignition module from Advance Auto).  The problems are some stutters and dropouts when accelerating.

I need a better understanding of the grounding problems that some posters have warned about.  They mention a grounding wire from the distributor harness to the fender that is sometimes not functional.  Where does this wire attach to the fender? 'Cause I can't find it.  (Which, of course, may be the problem)

I can see the flat ribbon strap grounding the engine to the frame, and there's a grounding point on the passenger side firewall where several auxiliary relays connect to.  But I don't see anything grounding to the fender except my newly installed headlight relays.

Thanks to all,
JB
1984 Eagle Sportwagon
258 - 6 cyl
5-speed !

Offline IowaEagle

  • AMC Eagle Archivist
  • Administrator
  • AMC Eagles Den Addicted
  • *****
  • Posts: 31968
  • Thumbs Up 476
Re: 'Big Cap' ignition upgrade (the saga continues): grounding question
« Reply #1 on: January 17, 2015, 10:03:30 PM »
Check the schematics in the AMC Eaglepedia to make sure.  But I think its grounded at the ICM.
Click for Toledo, IA Forecast" border="0" height="100" width="150   


Not a Jeep.  Not a Car.  Its an AMC Eagle!

1982 Eagle SX/4 Sport;
1980 Concord DL;
1970 Ambassador 2 Dr HT, SST
2002 Hyundai Santa Fe;
2008 Jeep Patriot Sport - Freedom Drive II

Offline macdude443

  • Eagle Sport
  • ****
  • Posts: 463
  • Thumbs Up 24
Re: 'Big Cap' ignition upgrade (the saga continues): grounding question
« Reply #2 on: September 22, 2015, 02:42:09 PM »
Just noticed this.  I know it's old.  Just to clarify, the black wire in the 3-wire ICM<->Distributor pickup harness is the ground.  The Dist/ICM grounds through the distributor base/block.  It is recommended by some to tap into that black wire and create a dedicated ground, as the dist base gets dirty and becomes an unreliable ground point.  If I remember right, the ICM enclosure is not grounded.
1982 Eagle SX/4
1986 Eagle Wagon

 

SMF spam blocked by CleanTalk