The alternator amperage rating won't really help...it's the underdrive
pulley that's causing the low charging rate. I had both the alternator and
crank underdrive pulley's on my truck for a while and with the same problem
(running larger ground and power feed wires and the 135amp alternator).
Best bet: get rid of the underdrive alternator pulley and stick with just
the crank pulley.
For those with the 3.9/5.2/5.9L engines, I've swapped out to the Viper crank
pulley which is still an underdrive (as compared to the stock 3.9/5.2/5.9L
pulley) but isn't as small as the ASP/March set. Doesn't cause a huge drain
at idle with the radio, headlamps, and A/C running (drops to 12.3v instead
of 11.0-10.9 as with the ASP pulley).
- Bernd
-----Original Message-----
From: Kyle Kozubal [mailto:solocamxt@sbcglobal.net]
Sent: Wednesday, April 25, 2007 7:51 PM
To: DML
Subject: DML: Alternator Upgrades
I have underdrive pulleys in my truck. When I lock the doors, or roll up
more than one window at a time, the battery guage really drops. I never get
an alternator light or anything serious, but I have noticed the headlights
dim a tad.
How or where can I check the AMP rating for the alternator I have in my
truck? I thought it would have said directly on the alternator. Or does it,
and I just need to decifer the code/part number?
Here is what is says:
-Denso
-12V 70113
-56041 693AC
-TN121000
-4545
Is this an 113 amp unit?
I can get a 145 amp unit, for fairly cheap. Will this help and be a
worthwhile upgrade?
Thanks for any and all info!
Kyle
2004 Dakota Quad Cab
4.7L V8, Auto, 4x4, 3.55 Gears
Flowmaster 3" 40 Series Exhaust
Thru-Body Exhaust, K&N FIPK Intake
Jet Chip Stage II Performance Module
Pro Comp 17X8 Series 8089 Wheels
Yoko Geolander AT+II 265/70R17 Tires (siped) Leer QXL Cap, Rhino Liner,
Billet Fuel Door APC Clear Corners, Class IV Hitch Vent Visors, Husky Foor
Liners Windows Tinted, Polk Speakers
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