BDEE
Full Access Member
I noticed last winter that every once in a while my electrical system would have a sort of surge condition at idle. What I mean by this is that the lights including headlights, tail lights, dome lights and dash lights all would have this pulse effect going dim and bright quickly and repeatedly.
My battery ended up getting pretty weak over the winter so I replaced it and had my alternator tested by the local shop. The alternator was in pretty good shape. After replacing the battery it seemed that the issue was greatly reduced.
Fast forward to the last few weeks, and the issue has been increasingly more noticeable, to the point where it's noticeable even when it isn't dark out and while driving as well.
I've done some searching here and on google and have found instances where the lights will shut off completely and other weird gremlins but nothing for this.
Other notable information:
I do have a scan gauge II that I use to monitor a few things, one being the system voltage. It's usually running between 13-14.7 volts but will sometimes dip to 12 and sometimes even 11.x while stopped. The readings are not consistent at all.
I have noticed what sounds like a low volume high pitched whine that is throttle based as well. Throttle pressed = whine, mostly noticeable at highway speed, but off throttle the noise stops.
I also have been having an intermittent p0306 code which I haven't sorted yet, plugs, coil have been replaced. Kind of wondering if this is related, though I haven't ruled out injector or injector wiring.
I am also running an aftermarket stereo with powered sub, so it shouldn't be loading the system heavily.
Any ideas? I'm getting pretty annoyed with it.
I apologize for the novel.
My battery ended up getting pretty weak over the winter so I replaced it and had my alternator tested by the local shop. The alternator was in pretty good shape. After replacing the battery it seemed that the issue was greatly reduced.
Fast forward to the last few weeks, and the issue has been increasingly more noticeable, to the point where it's noticeable even when it isn't dark out and while driving as well.
I've done some searching here and on google and have found instances where the lights will shut off completely and other weird gremlins but nothing for this.
Other notable information:
I do have a scan gauge II that I use to monitor a few things, one being the system voltage. It's usually running between 13-14.7 volts but will sometimes dip to 12 and sometimes even 11.x while stopped. The readings are not consistent at all.
I have noticed what sounds like a low volume high pitched whine that is throttle based as well. Throttle pressed = whine, mostly noticeable at highway speed, but off throttle the noise stops.
I also have been having an intermittent p0306 code which I haven't sorted yet, plugs, coil have been replaced. Kind of wondering if this is related, though I haven't ruled out injector or injector wiring.
I am also running an aftermarket stereo with powered sub, so it shouldn't be loading the system heavily.
Any ideas? I'm getting pretty annoyed with it.
I apologize for the novel.
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