Need to know main ground locations
05-25-2019, 05:37 PM
#1
Senior Member
Thread Starter
Join Date: 08-03-2010
Location: Lake Ronkonkoma, N.Y.
Posts: 3,564
Need to know main ground locations
This is the third time I can get in the car with a known good battery in it and it's like the battery is no good.
Happened the first time before the winter when I had my original Delco. OK I said the battery is 10+ years old.
Got a new Interstate battery and all through the winter not a problem.
I posted another thread here about my radom battery failure but don't know how to retrieve it.
Anyway three days ago the same thing happened. First used my load tester at the underhood power points and it looked like the battery was dead when tested. Jumped the car and started. Charging system OK.
Today (3 days later) same thing.
I happen to have tools with me and my volt ohm meter, as I was stuck in a parking lot and not at my house.
At the battery it showed 7 volts. Took the negative terminal off and measured voltage. Reading was 12.
Had a person jump me and it showed 13.8 and the car started no problem.
Sorry for the long story about this .
I would like to know where the main chassis grounds are on this car so I can look there as a starting point.
Thanks
Happened the first time before the winter when I had my original Delco. OK I said the battery is 10+ years old.
Got a new Interstate battery and all through the winter not a problem.
I posted another thread here about my radom battery failure but don't know how to retrieve it.
Anyway three days ago the same thing happened. First used my load tester at the underhood power points and it looked like the battery was dead when tested. Jumped the car and started. Charging system OK.
Today (3 days later) same thing.
I happen to have tools with me and my volt ohm meter, as I was stuck in a parking lot and not at my house.
At the battery it showed 7 volts. Took the negative terminal off and measured voltage. Reading was 12.
Had a person jump me and it showed 13.8 and the car started no problem.
Sorry for the long story about this .
I would like to know where the main chassis grounds are on this car so I can look there as a starting point.
Thanks
05-25-2019, 06:05 PM
#2
Administrator
Join Date: 10-13-2011
Location: Welland,Ont Canada
Posts: 36,451
It’s a sticky in the “How to” section
https://www.chevyhhr.net/forums/how-...cations-56504/
I hope this helps, load testing should be done at the battery terminals , to avoid voltage spikes , which can fry a computer.
Check for a dead cell, somebody posted resently about one of those batteries having issues
https://www.chevyhhr.net/forums/how-...cations-56504/
I hope this helps, load testing should be done at the battery terminals , to avoid voltage spikes , which can fry a computer.
Check for a dead cell, somebody posted resently about one of those batteries having issues
05-25-2019, 06:11 PM
#3
Technical Moderator
Join Date: 01-23-2009
Location: Fredericksburg, Virginia
Posts: 24,665
What is radom?
I looked at the stickies in the How-To forum and saw https://www.chevyhhr.net/forums/how-...cations-56504/ is that what you need?
I would look at the alternator diodes first, something is trying to be a motor. I guess you could just disconnect the alternator either at the fuse box or the alternator and do the same check on the battery.
I looked at the stickies in the How-To forum and saw https://www.chevyhhr.net/forums/how-...cations-56504/ is that what you need?
I would look at the alternator diodes first, something is trying to be a motor. I guess you could just disconnect the alternator either at the fuse box or the alternator and do the same check on the battery.
05-26-2019, 02:22 AM
#4
Senior Member
Thread Starter
Join Date: 08-03-2010
Location: Lake Ronkonkoma, N.Y.
Posts: 3,564
What is radom?
I looked at the stickies in the How-To forum and saw https://www.chevyhhr.net/forums/how-...cations-56504/ is that what you need?
I would look at the alternator diodes first, something is trying to be a motor. I guess you could just disconnect the alternator either at the fuse box or the alternator and do the same check on the battery.
I looked at the stickies in the How-To forum and saw https://www.chevyhhr.net/forums/how-...cations-56504/ is that what you need?
I would look at the alternator diodes first, something is trying to be a motor. I guess you could just disconnect the alternator either at the fuse box or the alternator and do the same check on the battery.
Other times it will not give me a problem, will start time after time.
Last time this happened I got the car started and took it to the Interstate dealer. They gave me a loaner battery for the weekend and did a shop recharge and test on the battery. They said nothing was wrong with mine so I put it back in.
Never had an issue all through the winter.
Thanks for the link for ground locations.
I did find a wiring diagram for the start circuit also.
Last edited by Cat Man HHR; 05-26-2019 at 03:20 AM.
05-26-2019, 09:00 AM
#6
Technical Moderator
Join Date: 01-23-2009
Location: Fredericksburg, Virginia
Posts: 24,665
I guess you won't take my suggestion of checking the alternator diodes. Obviously something is trying to draw power from the battery when the key is off; the alternator is directly connected to the battery; the alternator without the diodes is a motor.
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