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View Full Version : Identifying source of voltage issues


Whammy
03-22-2015, 10:51 AM
All,

I have been having some issues with voltage in my ZHP. Using torque and a bluetooth OBD-II connector, I can see voltage swings somewhere between 0.5V to 1.0V. I would normally expect +/- .1V swings. I have been seeing this issue since late last year with interior and exterior lights flickering. So far, I have done the following things to pinpoint or resolve the issue:

New alternator and voltage regulator (OE reman Bosch unit)
Tested the battery multiple times by Advance Auto; battery is less than 2 yrs old.
Unconnected/disabled LED Angel Eyes



Does anyone have other ideas besides what I have listed above? Thanks for the help!
Whammy
03-27-2015, 11:58 AM
Anyone has ideas?
wsmeyer
03-27-2015, 12:15 PM
Check where the ground cable from the battery attaches to the chassis and make sure it is clean and tight.
danewilson77
03-27-2015, 12:16 PM
I wonder if the alt/vr you got is bad?

"No flamesuit required"
ryankokesh
03-27-2015, 06:48 PM
I'd bet there's a bad connection somewhere that's not quite as solid as it could be. Do you have a sub?


Sent from my iPhone
Whammy
03-28-2015, 08:13 AM
Check where the ground cable from the battery attaches to the chassis and make sure it is clean and tight.

Will do.


I wonder if the alt/vr you got is bad?

"No flamesuit required"

Dane, I would hope not. It is Bosch OE Reman. I got it from a great indy shop here in Denver with a huge parts supply.


I'd bet there's a bad connection somewhere that's not quite as solid as it could be. Do you have a sub?

Sent from my iPhone

I used to have the BSW Sub system but sold it. I should double check the connections on the radio to make sure they are solid.

Another question for all: Have there been issues with the blower fan causing voltage swings?
Whammy
04-12-2015, 07:11 AM
Bump...any other ideas?
Whammy
05-27-2015, 07:53 PM
Found it: Driver side memory module.

Time to order a new one.
derbo
05-27-2015, 08:15 PM
Found it: Driver side memory module.

Time to order a new one.

How did you end up figuring out it was the Driver side memory module?
ryankokesh
05-28-2015, 03:57 AM
How did you end up figuring out it was the Driver side memory module?

No kidding... talk about a needle in a haystack.
Whammy
06-01-2015, 07:24 PM
http://www.zhpmafia.com/forums/showthread.php?12831-Whammy-s-Journal-Thread&p=437234#post437234