BrianN324
NAXJA Forum User
- Location
- Washington State
1998 XJ 4.0L
I just finished installing a large case 200A Denso alt and an external voltage regulator. It's the kit from alternatorparts.com. This was done because my PCM voltage regulator went out causing high voltage situation. I deciced to change the alt too, perhaps overkill, but I was getting the ext voltage reg kit anyway and my alt was original equipment.
I've run it and it now seems to be fine, 14.4v or so and steady charge, this changes a bit with load, but much better than the climbs up to 16v+ where I would need to shut it down.
I'm posting this to find anyone who may have done an external regulator like this, as I need to find a good solid source for battery 12v. The reg uses this both to feed the alt and as a sense line to determine the actual voltage at the battery in order to properly control the alternator output. I have looked in the PDC but hesitate to take power from places like fuel pump, ASD etc. An alternative would be to use one of these sort of sources to a relay connected directly to the battery. (By the way, the kit includes a Field Replacement Module that connects to the original wires to the PCM to fool the computer into seeing an alt and keeping the check light out.)
Any input would be appreciated.
I just finished installing a large case 200A Denso alt and an external voltage regulator. It's the kit from alternatorparts.com. This was done because my PCM voltage regulator went out causing high voltage situation. I deciced to change the alt too, perhaps overkill, but I was getting the ext voltage reg kit anyway and my alt was original equipment.
I've run it and it now seems to be fine, 14.4v or so and steady charge, this changes a bit with load, but much better than the climbs up to 16v+ where I would need to shut it down.
I'm posting this to find anyone who may have done an external regulator like this, as I need to find a good solid source for battery 12v. The reg uses this both to feed the alt and as a sense line to determine the actual voltage at the battery in order to properly control the alternator output. I have looked in the PDC but hesitate to take power from places like fuel pump, ASD etc. An alternative would be to use one of these sort of sources to a relay connected directly to the battery. (By the way, the kit includes a Field Replacement Module that connects to the original wires to the PCM to fool the computer into seeing an alt and keeping the check light out.)
Any input would be appreciated.