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altenator on 22R overcharging
Posted: Mon Oct 20, 2003 4:25 pm
by robbie
was driving home before, battery light went on and I saw the charge on the dash board head straight up to 16V.
is this common? is it just something as small as the regulator? I remember my old celica with the 3T-GTEU motor in it had this same prob, was just the regulator on it..
Posted: Mon Oct 20, 2003 5:09 pm
by MQ080
My MQ was on 38v last week before i changed the reg
Posted: Mon Oct 20, 2003 5:11 pm
by robbie
fark me..
did it cook your battery?
Volts
Posted: Mon Oct 20, 2003 9:42 pm
by hobpedlar
My ammeter shows my alternator regularly charging at 16v.
I am running three batteries though.
It has always charged at 16v from memory and have never had a problem.The 16v has been double checked with an independant meter and is actually 15.8v
Haven't had the light come on though.
Hope this helps
Westie
Posted: Mon Oct 20, 2003 9:43 pm
by robbie
well, its always been on 14's..and all of a sudden, the light comes and and charge is peaking (it only goes upto 16v - and its at that)..
so yer
Posted: Mon Oct 20, 2003 9:59 pm
by beebee
My voltage regulator on my 22R died and it fried the + output cable from the altenator. Burnt right through!
Posted: Mon Oct 20, 2003 10:01 pm
by robbie
is it common for these fuggers to die? beebee did it smell nice?
Volts
Posted: Mon Oct 20, 2003 10:13 pm
by hobpedlar
I am assuming here your 22R is in a Hi-lux?
My car is a 4runner and the ammeter goes to 18v.
I have heard that the early regulators had a problem with the exciter coil.
This apparentky turns off your batt light as well as doing something mysterious to the alternator.I had a problem with a regulator in Broome several years ago.
My battery light came on but everything seemed to work fine.Battery charging and all auxilliary stuff worked fine.Without knowing too much about regulators I pulled the cover off and found that the "lacquer" on one of the coils on my 4runner was darkened.
I got a second hand reg of an "old" cruiser and everything was fine for 2 weeks or so until the same thing happened.Got a brand new one in Karatha and still have it working fine 4 years later.
If the charge volts are peaking it is probably trying to charge the battery after some major drain,which could be regulator related??
There is a fellow on the "toymods" site called Grant who is an ace on electrical stuff.Maybe give him a holler if noone else can help.
Cheer,hope you sought it out.
Westie
Posted: Mon Oct 20, 2003 10:15 pm
by robbie
cheers mate, thanks for the help
Posted: Mon Oct 20, 2003 10:30 pm
by dumbdunce
grab a regulator from a celica or corolla or corona or crown or any pre 86 (ish) toyota*, they are all the same. it should regulate the voltage between 13.5 and 14.4 volts, 16 is definitely bad.
*some models up to even 1992 (possibly later!) still have external regulators. my '86, '87, and '89 bundys all did.
Posted: Tue Oct 21, 2003 9:36 am
by MQ080
robbie wrote:fark me..
did it cook your battery?
There were bubbles!
remember the MQ is 24v
Posted: Fri Oct 24, 2003 3:30 pm
by robbie
change the regulator (new one), and its still doing it.. spoke to an auto elec and he thinks a diode could have popped in the altenator..
