what does PCM controlled alternator mean

[D-train-13k]

If this anything like the 07+ tahoe ull have to add the alt isolated from the stock electrical and ran to the system battery bank

ive actually encountered this. the computer did not want the high output alt to work. it would set off all kinds of dash lights saying service engine soon.

then when the new alt was mounted outside on the bracket it had alot of ground noise. and me and some more experienced poeple could not figure out what was causing it.

and Kriss i would have at least 3 or 4 large batteries for a system like that.

but yes it is both good and bad to have a pcm controlled alt. if you alt is in sufficient the computer will notice before hand and set off warning lights in your vehicle

[KHRISS]

its for my 2005 jeep grand cherokee and the engine size v6 3.7l if that matters too?

[D-train-13k]

its for my 2005 jeep grand cherokee and the engine size v6 3.7l if that matters too?

if i were you i would call mechman or someone to see how yours will work. they have more experience with more specific vehicles. and mechman has great customer service and is great about returning phone calls and answering and questions you have.

[KHRISS]

warning lights meaning check engine and check battery and stuff like that right ? wow im getting scare now if my wife was to see those warning lights turn on after i changed something in the car i would never hear the end of it lmao

Edited October 9, 2011 by KHRISS

[D-train-13k]

warning lights meaning check engine and check battery and stuff like that right ? wow im getting scare now if my wife was to see those warning lights turn on after i changed something in the car i would never hear the end of it lmao

yeah lol. those lights are pretty stupid. but like i said call up mechman and he should be able to get you situated. there might be a bypass that he makes. i know its pretty vehicle specific but it will allow you to control your voltage and bypass your computer

[KnockinthaStreetzof608]

http://blog.dcpowerinc.com/2011/09/09/how-pcm-controlled-alternators-work/

END THREAD! lol

[KHRISS]

ok ill do that but what do you recommend me to do to avoid those warning lights and my wife together lol im thinking optima in the front and xs power D3100 in the back with the 320 amp high output alt to avoid those dumb gay stupid light lol would that work?

[dblovah51]

Cherokee? U can get the high output alt in the factory location with a voltage module and b fine with ability to adjust voltage....contact matthew he'll hook u up at mechman

[KHRISS]

yes i agree but with the PCM stuff now the question is if those warning lights come on after i added the alternator what to do and thank you fellas for sharing your knowledge i really appreciate it alot

[D-train-13k]

Cherokee? U can get the high output alt in the factory location with a voltage module and b fine with ability to adjust voltage....contact matthew he'll hook u up at mechman

yeah i figured he could. but call matt and hell hook you up. you could prolly go with a 270 amp alt. with the voltage module you wont have any lights.

but id get the biggest bat you can fit up front and then a d3100 in the back. you should be good