alternator isnt charging my battery...
07-04-2007, 01:33 AM
#1
alternator isnt charging my battery... soo i rigged my alternator up soo it doesnt need a pcm. driving to the gas station today for the first time the battery voltage guage droped down to "0" and when i got to the gas station i couldnt start my jeep back up
now i think i have it hooked up right, i have the +terminal going to the back of the alternator, and then on the connector i have pin B going to a resisted 12v line from ign. switch.
i have the 12v. rigged up by using a relay and a 6v signal. can a relay stop working after a certain amount of time? because it will work fine for about 10min. then all of a sudden the volt guage on the cluster will drop to 0
now i think i have it hooked up right, i have the +terminal going to the back of the alternator, and then on the connector i have pin B going to a resisted 12v line from ign. switch.
i have the 12v. rigged up by using a relay and a 6v signal. can a relay stop working after a certain amount of time? because it will work fine for about 10min. then all of a sudden the volt guage on the cluster will drop to 0
07-04-2007, 09:56 AM
#3
TECH Fanatic
iTrader: (4)
Join Date: Mar 2007
Location: Twin Cities, MN
Posts: 1,062
Likes: 0
Received 0 Likes
on
0 Posts
You do have a fusible link in the line next to the battery don't you? If the alternator ever shorts internally, you will have some bad juju if you don't. What is the relay doing? If you have more current flowing through it than it can handle, it will fail. If you could post a drawing of what you have, that would be great!
Trending Topics
07-09-2007, 08:36 AM
#8
Originally Posted by LS1MCSS
Here is a diagram for hooking up the LSX alternator in an early car. The only wires you need are the large wire to the battery and the one for pin L. Mine charges fine this way.
...BTW a fusable link is not necessary in the charge wire going to the battery, just make sure you use a large gauge wire and route it carefully like you would a battery cable. You will virtually never have an issue with an alternator short, your only concern is shorting the battery, and as long as the insulation and conectors on the charge wire is intact, that will not happen.
07-09-2007, 08:55 PM
#9
Originally Posted by ILLINTENT
A 47 ohm resistor needs to be soldered in line in the 12 volt switched wire to the L terminal to drop the voltage to a regulator friendly level.
07-09-2007, 11:00 PM
#11
Guys, we've been over it 100 times (where's that old thread where I explained it all?)
Don't wire it like LS1MCSS shows in his diagram, that will do it in quickly!
You need the 470 ohm resistor in the "L" line.
Don't wire it like LS1MCSS shows in his diagram, that will do it in quickly!
You need the 470 ohm resistor in the "L" line.
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
07-09-2007, 11:09 PM
#12
Originally Posted by Speartech
Guys, we've been over it 100 times (where's that old thread where I explained it all?)
Don't wire it like LS1MCSS shows in his diagram, that will do it in quickly!
You need the 470 ohm resistor in the "L" line.
Don't wire it like LS1MCSS shows in his diagram, that will do it in quickly!
You need the 470 ohm resistor in the "L" line.
07-10-2007, 02:33 AM
#14
TECH Fanatic
iTrader: (15)
Join Date: Jan 2004
Location: Forreston, IL
Posts: 1,078
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Speartech
Guys, we've been over it 100 times (where's that old thread where I explained it all?)
Don't wire it like LS1MCSS shows in his diagram, that will do it in quickly!
You need the 470 ohm resistor in the "L" line.
Don't wire it like LS1MCSS shows in his diagram, that will do it in quickly!
You need the 470 ohm resistor in the "L" line.
07-10-2007, 04:43 PM
#16
Originally Posted by exodus
makes things a little difficult when the search function is not working properly
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
07-10-2007, 04:44 PM
#17
Originally Posted by LS1MCSS
That diagram is straight from the S&P website. Guess I better add the resistor to mine this weekend then.
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
