Jeep CJ MPFI upgrade and upgraded alternator - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Advanced Jeep Tech > Jeep CJ MPFI upgrade and upgraded alternator

Nitro Gear Packages Now Available at Rockridge 4wdG2 Disc Brake Conversion Kit for Jeep Wrangler YJ TJ LJ ChSPARTAN LOCKERS are on sale BIG TIME at ROCKRIDGE 4WD!

Reply
Unread 11-20-2013, 01:53 PM   #1
dirtyb
Registered User
1981 CJ8 
 
Join Date: Feb 2004
Posts: 42
Jeep CJ MPFI upgrade and upgraded alternator

I upgraded my jeep CJ to fuel injection with parts from a '94 grand cherokee. I initially modified the brackets for the '94 alternator (jeep calls it a generator). Because I used the new alternator, I didn't need the diode that most people need to prevent electrical leakage (and won't let your engine shut off!!).

However, I really don't like this alternator. It seems to monkey with other electrical components in the jeep. I've given up trying to figure out why, and I've decided to install a CS130 style alternator.

Here's my predicament. I'm reading that I need to install a 35 ohm to 500 ohm resistor in the "L" line to simulate a dashboard light. I'm also reading that I need to install in the same line a diode that I got from Hesco in order to prevent backward electrical leakage. The diode shows a resistance of about 1 Mega ohm when I check it with the multi-meter. Is the diode by itself good enough? Do I still need the diode with the new style CS130 alternator?

dirtyb is offline   Reply With Quote
Unread 03-29-2014, 11:54 AM   #2
MountainHound
Registered User
1979 CJ7 
 
Join Date: Dec 2010
Location: Aurora, Colorado
Posts: 59
Did you figure this out? I am in the same situation replaced si to cs and have a pigtail adapter for the alt. with a 150 ohm resistor.
__________________
'79 CJ7, 258 Hesco MPFI, Grounded, Dual Batts, T-18, Scout Dana 300, D30 Frt 3.54 Yukon, AMC 20 Rear-Yukon 1pc-ARB Locker 3.54, On Board Air, , Rusty's 4'' Lift, 33" BFG KM2s,
MountainHound is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.