*** fc OVER CHARGING - 16 VOLTS where is the alternator relay located?***
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*** fc OVER CHARGING - 16 VOLTS where is the alternator relay located?***
my uk rx7 fc turbo vert is over charging at about 16.1 volts and also my battery warning light is not comeing on
iv replaced the alternator aND BATTERY still the same
i belive my relay may be fuberd but im not sure where it is
any help
cheers
iv replaced the alternator aND BATTERY still the same
i belive my relay may be fuberd but im not sure where it is
any help
cheers
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#9
Sharp Claws
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check the voltage at the battery with a voltmeter, never trust the interior gauges to always be correct.
check connections at the alternator and the battery voltage with the car off, the battery should be at roughly 12.6v static. if it's reading below 11v then you may have a faulty cell in the battery which can cause overcharging.
if you had the alternator repaired/rebuilt, then it likely wasn't tested properly while spun up to speed and the regulator is faulty, in which case replace the alternator.
check connections at the alternator and the battery voltage with the car off, the battery should be at roughly 12.6v static. if it's reading below 11v then you may have a faulty cell in the battery which can cause overcharging.
if you had the alternator repaired/rebuilt, then it likely wasn't tested properly while spun up to speed and the regulator is faulty, in which case replace the alternator.
#10
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You most likely have a problem with the sense wire as I believe around 17V is basically unregulated max power.
The alternator is looking for "Feedback" to determine proper voltage. A quick test would be to jumper a wire from the alternator output to the sense wire input. This should drop it to 13 ish volts as you will have almost 0 voltage drop.
I put an FD alternator in mine, battery in the back and with all the new wire was seeing only 13.5 V at the battery when Hot. I wanted to get up around 14.5 to make sure the fuel pump was getting enough juice so I added a diode to the sense wire to trick it into thinking the voltage was ~1 V less than it really was. Check out my post here as it seems a lot like the issue you are having (except you do not have the voltage drop my system had)
https://www.rx7club.com/2nd-generati...lights-966168/
The alternator is looking for "Feedback" to determine proper voltage. A quick test would be to jumper a wire from the alternator output to the sense wire input. This should drop it to 13 ish volts as you will have almost 0 voltage drop.
I put an FD alternator in mine, battery in the back and with all the new wire was seeing only 13.5 V at the battery when Hot. I wanted to get up around 14.5 to make sure the fuel pump was getting enough juice so I added a diode to the sense wire to trick it into thinking the voltage was ~1 V less than it really was. Check out my post here as it seems a lot like the issue you are having (except you do not have the voltage drop my system had)
https://www.rx7club.com/2nd-generati...lights-966168/
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cheers guys iv got another alternator on order, as I found the bat warning light bulb blown, replaced and still charging at over 16 volts so hopefully the new alt does the tric
#12
Red Pill Dealer
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I've had over charging due to a bad battery once before. My radio quick working because the alternator was supplying too many volts.
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