Low Voltage
03-20-02, 10:14 PM
#1
Back from teh deadly!
Thread Starter
Join Date: Feb 2001
Location: Louisville KY 40299
Posts: 1,163
Likes: 0
Received 0 Likes
on
0 Posts
Low Voltage
hey guys,
Lately Ive been noticeing that my alternator output was low so I changed alternators. but now its like the alternator is over worked.........regular driving my car is only reading like13.7 volts but under heavy acceleration all the dummy lights start to light up and the voltage begins to drop and I was hoping that some one could help me out......Also at Idle the voltage drops to 12.4-12.7 volts..............thanks
nick
Lately Ive been noticeing that my alternator output was low so I changed alternators. but now its like the alternator is over worked.........regular driving my car is only reading like13.7 volts but under heavy acceleration all the dummy lights start to light up and the voltage begins to drop and I was hoping that some one could help me out......Also at Idle the voltage drops to 12.4-12.7 volts..............thanks
nick
03-20-02, 10:49 PM
#2
I came, I saw, I boosted.
Join Date: Apr 2001
Location: Windsor, Ontario, Canada
Posts: 1,921
Likes: 0
Received 0 Likes
on
0 Posts
Here you go
The alternator on the 7 is crap- so is the wiring
First- Make sure the belt is tight
Clean the battery contacts thouroghly
Make sure the alternator is OK
The undercharging, indicated by the glowing idiot lights- is common, with an easy fix! Lucky you!
Run a heavy, 10 or 8 gauge wire from the + battery terminal straight to the alternator output (charging post)- the nut on top of tha alternator.
Run another heavy wire from the - terminal of the battery to a close chassis bolt.
If you want, while you have the heavy wire out, run another ground from the firewall to under the intake manifol at the back of the engine (passenger side) where the other wimpy one is.
This fixed my problems (identical to yours) and ever one elses that I have recommended this fix to.
Every one should do it anyways- regardless of charging voltage. It will make the alternator's work a lot easier!!
First- Make sure the belt is tight
Clean the battery contacts thouroghly
Make sure the alternator is OK
The undercharging, indicated by the glowing idiot lights- is common, with an easy fix! Lucky you!
Run a heavy, 10 or 8 gauge wire from the + battery terminal straight to the alternator output (charging post)- the nut on top of tha alternator.
Run another heavy wire from the - terminal of the battery to a close chassis bolt.
If you want, while you have the heavy wire out, run another ground from the firewall to under the intake manifol at the back of the engine (passenger side) where the other wimpy one is.
This fixed my problems (identical to yours) and ever one elses that I have recommended this fix to.
Every one should do it anyways- regardless of charging voltage. It will make the alternator's work a lot easier!!
03-20-02, 10:55 PM
#3
SOLD THE RX-7!
Join Date: Mar 2001
Location: Vancouver, BC, Canada
Posts: 7,451
Likes: 0
Received 0 Likes
on
0 Posts
ya my lights used to come on at upper RPMs till I added another wire from the alternator "+" to battery "+". the firewall to engine and battery "-" to ground didn't seem to do anything different to mine.
03-22-02, 12:02 AM
#5
Full Member
Join Date: Oct 2001
Location: The Cliff
Posts: 60
Likes: 0
Received 0 Likes
on
0 Posts
Thanks Bambam7
Bro it works thanks alot I drove around with all my accesories on and it stayed at a stead 13.5 volts enstead of the scarry 11.7
and stuff like that....I just want to thank ya...
nick
and stuff like that....I just want to thank ya...
nick
Thread
Thread Starter
Forum
Replies
Last Post
The1Sun
1st Generation Specific (1979-1985)
7
09-18-15 07:13 PM
