Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

Earthing points?

Brin

GOT MANG?
Joined
Sep 13, 2008
Messages
275
Reaction score
3
Points
0
Location
Sydney, Australia
Website
forums.justcommodores.com.au
Members Ride
Something fully mangin'
Some of you may know that my car has been giving me hell lately and leaving me stranded at the worse possible times. I replaced the battery and then the starter motor to find out it was just a stupid earth problem all along :bang:

Where are some good places to create more earth points from the engine to the bay and how would I go about this?

Also, my alternator gives a correct reading of 14v, but when the engine is revved it jumps around anywhere from 6v to 16v.. Why? :whistling

Cheers boys
 

pjdm1980

Shut up Jr I'm thinkin!
Joined
Feb 2, 2009
Messages
2,434
Reaction score
14
Points
38
Location
Geelong, Victoria
Members Ride
E1 GTS BUILD NO# 007, GQ Patrol.

Tom_1569

Ecotech Power
Joined
Nov 19, 2006
Messages
2,236
Reaction score
52
Points
48
Location
Gippsland - VIC
Members Ride
'14 SR5 Pusslux
If its jumping from 6-16v its shagged, either the alternator or the regulator. It should read a constant 14.8V even at idle, occassionly they read a little lower (not lower then then 14) at idle. If its jumping around that I would be trying another alternator and reg. Are the cables from the Battery to Alt in good condition? and joined firmly no corrosion?
 

camstatic

I'm back babeh.
Joined
May 19, 2006
Messages
327
Reaction score
4
Points
18
Location
Regional SA
Members Ride
VZ SS
Sounds like you could have a dodgey sensor wire too, the thin wire that goes from the alt to the battery, try replacing that with similar gauge wire, even just as a temporary thing and see if it settles.

Convenient earth points on the V6 are mostly in inconvenient places, there is a nice thread on top of the tensioner assembly that suits well for a single 4ga to the master cyl bracket though. :) (close to alternator cable can be hidden under the top radiator hose for half its journey, and the assembly has multiple bolting points to the block, perfect)
 
Top