negative battery cable ground??
Thread Starter
Racer
Joined: Jul 2019
Posts: 366
Likes: 17
negative battery cable ground??
I know this is not a corvette specific issue, but this is the best forum for legit responses and this issue is not car specific. IN my 2000 BMW 740il, all electronics will operate normally upon turning the key, but there is a loud clicking noise and no start. I found that where the negative battery cable grounds there are some sparks that shoot out in tandem to every time it tries to crank but not during the electronic usage. I tightened the nutt on the ground but it just causes more pronounced sparks. Obviously there is an issue at this point and my question is how to rectify this? Would simply removing the cable from the ground and cleaning the ground area likely resolve this issue? And what is best way to clean it? Thanks
Cruising
Joined: Sep 2019
Posts: 12
Likes: 1
I know this is not a corvette specific issue, but this is the best forum for legit responses and this issue is not car specific. IN my 2000 BMW 740il, all electronics will operate normally upon turning the key, but there is a loud clicking noise and no start. I found that where the negative battery cable grounds there are some sparks that shoot out in tandem to every time it tries to crank but not during the electronic usage. I tightened the nutt on the ground but it just causes more pronounced sparks. Obviously there is an issue at this point and my question is how to rectify this? Visit Autofthings to review how long does it take to charge a car battery if you concern. Would simply removing the cable from the ground and cleaning the ground area likely resolve this issue? And what is best way to clean it? Thanks
Thread Starter
Racer
Joined: Jul 2019
Posts: 366
Likes: 17
will do. The clicking is coming from the battery in the trunk not from the engine/starter area. alternator has been tested and confirmed perfect condition. battery is only 10 months old.
Drifting
Joined: Jul 2017
Posts: 1,365
Likes: 471
From: S.E. Pennsylvania
Thread Starter
Racer
Joined: Jul 2019
Posts: 366
Likes: 17
i did so. I actually purchased new nutt to go on it. I sanded down the negative cable ground end on both aides as well as the actual metal ground area itself. The issue remains. Had battery tested and it was kind of low. Dropped it off at autozone to have it slow charged over 24 hours. I will pick it up after work. Good thing is if it doesnt work, i only bought it october of last year so it is under warranty I will get a new one if its bad.
Last edited by Bstan1009; Dec 16, 2019 at 04:33 PM.
Melting Slicks
Joined: Jan 2009
Posts: 3,275
Likes: 739
From: Miami FL
Good advice. I'll just add to clean everything at that point, to make sure the ground contact is good.You should check continuity from the battery (-) post to the metal frame where the grounding point is. It should be 0 Ohms. With the multimeter still attached, move back and forth the cables grounded at that point. Reading should remain stable at 0 Ohms while you do that.
