Notices
RX-8 Discussion General discussion about the RX-8 that doesn't fit in one of the specialty forums.
Sponsored by:
Sponsored by: CARiD

Upgraded Coil ground wire mounting point

Thread Tools
 
Rate Thread
 
Old Apr 12, 2021 | 01:25 PM
  #1  
Monstermills's Avatar
Thread Starter
Registered
 
Joined: Jan 2019
Posts: 74
Likes: 15
Upgraded Coil ground wire mounting point

Anyone have upgraded coils with ground wire? I have a new Bennett setup and didn’t get any directions. I read on a few posts some mounting it directly to battery or a ground on the engine.

I'm asking cause my car just threw a P0355 code for the ESS, I still gotta clean it and recheck. My car has 120k on it third engine just replaced last spring. I ran the wire for the ESS sensor under the bracket.

any info appreciated!

Reply
Old Apr 12, 2021 | 04:31 PM
  #2  
Loki's Avatar
Registered
iTrader: (1)
 
Joined: Jun 2009
Posts: 8,373
Likes: 1,104
From: Montreal
Yes, most (all?) D585 coil kits need to be grounded. Any existing ground point shhhould be fine? I wouldn't go to the battery, no reason to hang wires over the belt.

Not sure if this is necessary for Bennetbuilt, but for some other kits you need to remove the engine hanger hook near the #1 coil, otherwise the coil harness rubs on it and 7 years later your car starts blowing ignition fuses. Ask how I know.
Reply
Old Apr 12, 2021 | 06:30 PM
  #3  
TeamRX8's Avatar
Registered
iTrader: (25)
 
Joined: Apr 2005
Posts: 26,932
Likes: 2,137
you don’t really want to go to the battery with this style coil to prevent creating a grounding loop; do an internet search on that term if you’re not sure what it is.

it’s the A pin on this diagram that doesn’t exist on the OE harness (the other 3 pins).





I seem to recall the BHR setup was to put it over on the fender/chassis bolt on that side, but imo the unused boss right above the front rotor trailing spark plug is a good location (yellow circle below). It needs a short M6x1.00 bolt/washer and appropriate wire terminal size to bolt down there





even though the ESS wiring is shielded, it’s best to route it as far from the coils as possible to minimize potential signal interference. Even the OE wiring placement is fairly close, but these coils generate more energy than the OE coils.
.

Last edited by TeamRX8; Apr 15, 2021 at 10:06 AM.
Reply
Old Apr 12, 2021 | 08:42 PM
  #4  
Monstermills's Avatar
Thread Starter
Registered
 
Joined: Jan 2019
Posts: 74
Likes: 15
All good stuff guys, really appreciate the input and knowledge. It’s not supposed to rain tomorrow so I hope to get my hands dirty on this again. It definitely seems like some kind of interference, my car ran fine but definitely something going on at idle.
Reply
Old Apr 12, 2021 | 08:49 PM
  #5  
Monstermills's Avatar
Thread Starter
Registered
 
Joined: Jan 2019
Posts: 74
Likes: 15
Originally Posted by Loki
Yes, most (all?) D585 coil kits need to be grounded. Any existing ground point shhhould be fine? I wouldn't go to the battery, no reason to hang wires over the belt.

Not sure if this is necessary for Bennetbuilt, but for some other kits you need to remove the engine hanger hook near the #1 coil, otherwise the coil harness rubs on it and 7 years later your car starts blowing ignition fuses. Ask how I know.

yeah I had to remove my engine hanger to install, it actually looks like I could reinstall it after setup but I’m leaving it off! Thanks again
Reply
Old Apr 15, 2021 | 02:32 AM
  #6  
Joeyjoiner's Avatar
Registered
 
Joined: Aug 2020
Posts: 71
Likes: 32
I have got LS coils on my RX8. And recently noticed the earth cable dangling close to the belts. Think I will also try and relocate it somewhere less obtrusive.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
TeamRX8
Series I Do It Yourself Forum
46
Jun 21, 2019 09:55 AM
bentiac
Series I Trouble Shooting
2
May 22, 2012 05:32 PM
marcux
Series I Tech Garage
1
Sep 24, 2009 04:35 AM
X_R8ED
Series I Aftermarket Performance Modifications
5
Aug 20, 2008 11:20 PM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -5. The time now is 10:18 AM.