2005 Tahoe Daily [Update 06/25/20 - leveled?]
- Thread starter Galandorian
- Start date
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Galandorian
Full Access Member
so since I put in the new 10aH Lithium and disconnected my front battery, every day before work I would have to jump the vehicle, and then I could drive to work seeing 14.5V constant, and I could start the vehicle after work no issue
but on the way home from work, I'd see a max charging voltage of 13V no matter what, and I could never start the truck again once I turned it off
did some research, and it looks like in 2005 Chevy implemented an EPM system that has variable voltage to "increase gas mileage" lmao
evidently having your headlights on, or being in tow haul mode keeps the voltage charging where it should be
so that explains that in the morning, when I had headlights on, I had good voltage
I'm getting a dual alternator setup next week so I can avoid this entirely, but it's good to know, and for the weekend I'll be driving around with my headlights on no matter what
but on the way home from work, I'd see a max charging voltage of 13V no matter what, and I could never start the truck again once I turned it off
did some research, and it looks like in 2005 Chevy implemented an EPM system that has variable voltage to "increase gas mileage" lmao
evidently having your headlights on, or being in tow haul mode keeps the voltage charging where it should be
so that explains that in the morning, when I had headlights on, I had good voltage
I'm getting a dual alternator setup next week so I can avoid this entirely, but it's good to know, and for the weekend I'll be driving around with my headlights on no matter what
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Galandorian
Full Access Member
after waiting what felt like forever, I finally got my alt bracket and alternator in
BlueGhost (eBay) $200 dual alt bracket
Brand X (Jonathan Patrick) 270a alternator
I had the Spectre 9900 CAI lying around brand new in the box from another vehicle, so I threw it in there thinking it would make running the belt and everything easier.
turns out that in these vehicles with the electric fans, it really isn't that big of a difference, but hey, at least it looks cool I guess
BlueGhost (eBay) $200 dual alt bracket
Brand X (Jonathan Patrick) 270a alternator
I had the Spectre 9900 CAI lying around brand new in the box from another vehicle, so I threw it in there thinking it would make running the belt and everything easier.
turns out that in these vehicles with the electric fans, it really isn't that big of a difference, but hey, at least it looks cool I guess
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Sam Harris
Supporting Member
Wow, very nice. So you’re capable of what.. 420 amps...?? [emoji15]
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Galandorian
Full Access Member
they're separate systems, so the stock alt is just running the car, and the 2nd alt is just running the sound system
should be a little over 300a when hot and at full load, and like 230ish idle I believe
Sam Harris
Supporting Member
Ok gotcha. Plenty of power anyway!.. I think... that’s a lot of sound waves. [emoji16][emoji106][emoji631]
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Galandorian
Full Access Member
was driving to work today and only charging at 13.5V... again! I was like WTF man! about ready to throw my system out the window
came home and got to thinking, the dual alternator bracket is painted, and probably wasn't grounding properly
sure enough
14.5V grounded to the outer alt
15.5v grounded to the inner alt
so just needed to add a handy little 2/0 ground run
and taaadaahhhh
came home and got to thinking, the dual alternator bracket is painted, and probably wasn't grounding properly
sure enough
14.5V grounded to the outer alt
15.5v grounded to the inner alt
so just needed to add a handy little 2/0 ground run
and taaadaahhhh
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Galandorian
Full Access Member
in case anyone is wondering how I'm charging higher than the normal 14.4v - 14.8v that our alternators are generally regulated for, I added a Chanzon 1N4004 Rectified Diode to my alternator
I should've taken some pictures, but was just trying to get it playing and forgot to do so
here's a short style explanation and some pics from Hunter Martin
order yourself some diodes:
and then on these alternators you want the diode in line with the S plug
add the diode in line as seen:
grey line towards the alternator plug
shrink wrap it, add a zip tie for rigidity, etc, and you're ready to roll
I should've taken some pictures, but was just trying to get it playing and forgot to do so
here's a short style explanation and some pics from Hunter Martin
order yourself some diodes:
and then on these alternators you want the diode in line with the S plug
add the diode in line as seen:
grey line towards the alternator plug
shrink wrap it, add a zip tie for rigidity, etc, and you're ready to roll
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OP
OP
Galandorian
Full Access Member
first my cheap ebay housing started having issues
then my cheap ebay hatch handle broke
ended up purchasing parts to build new retrofits for the lights, and should hopefully have ebay sending me a new hatch handle to put on
then my cheap ebay hatch handle broke
ended up purchasing parts to build new retrofits for the lights, and should hopefully have ebay sending me a new hatch handle to put on
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Tonyrodz
Resident Resident
Have to, have to run a thin bead of silicone on any aftermarket lights. Stops any water from getting in.
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