altenator on 22R overcharging

Joined: 24 Feb 2003 Location: Melbourne

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..

Joined: 26 Jun 2003

My MQ was on 38v last week before i changed the reg Very Happy

Joined: 24 Feb 2003 Location: Melbourne

fark me..

did it cook your battery?

Joined: 19 Sep 2003 Location: Canberra

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

Joined: 24 Feb 2003 Location: Melbourne

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

Joined: 09 Nov 2002 Location: Brisbane

My voltage regulator on my 22R died and it fried the + output cable from the altenator. Burnt right through!

Joined: 24 Feb 2003 Location: Melbourne

is it common for these fuggers to die? beebee did it smell nice? Shocked

Joined: 19 Sep 2003 Location: Canberra

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

Joined: 24 Feb 2003 Location: Melbourne

cheers mate, thanks for the help Smile

Joined: 15 Feb 2003 Location: Shed.

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.

Joined: 26 Jun 2003

robbie wrote:

fark me..

did it cook your battery?

There were bubbles!

remember the MQ is 24v

Joined: 24 Feb 2003 Location: Melbourne

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.. cussing