Volvo RWD 140-160 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 5/2008 140-160 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Voltage Regulator? 140-160

posted by  cardog on  Sat Mar 19 08:46 CST 2011
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Mon Oct 13 10:29 CST 2014
[RELATED]

Hi Everyone,
It seems my voltage regulator is going. It seems to work intermintently but more not. I had thought that on the 140's they were internal to the alternator, (so I replaced that), but still it reads a bad regulator. Sooo, I get out my green book and see that it is supposed to have one on the inner fender behind the headlight. Ah, is that the box on the left side behind the headlight? Mine looks aftermarket, (maybe replaced by the previous owner?)
Does anyone have one? ...that works?
I have a volt guage hooked up and is been reading "0" most of the time, but everynow and then it jumps up to a good reading.
I usually drive my 140 on some nice days during the winter, but Yeay for Spring and nicer weather.
Thanks,
CU








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Voltage Regulator? 140-160

    posted by  145Guy on  Mon Apr 18 16:46 CST 2011
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Wed Mar 14 07:46 CST 2012
    [RELATED]

    I figured out a franken alternator setup that works great.
    I used the motorola front housing, stuck GM 10si guts and rear housing in, and got an aftermarket curved bracket from autozone (had to do a little gringing and drilling), and mounted it on very happily and now have 87amps.







  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Voltage Regulator? 140-160

    posted by  walrus3 on  Sat Mar 19 11:14 CST 2011
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Mon Dec 2 14:20 CST 2013
    [RELATED]

    Your voltmeter reading of zero is bogus.
    What makes you think you have a regulator problem? Is your battery going down?
    If not, you should check the wiring to your voltmeter.
    You should use another voltmeter and check the voltage of the system, especially
    when the engine is NOT running, while cranking, right after you have started it, and after it
    has run for a while.
    Should be 12.6 volts when not running, slightly lower (more than 10 volts) while cranking,
    right after you have started (should be about 14 volts) and after running for a while (probably slightly less, 13.5 volts)







    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Voltage Regulator? 140-160

      uid 4433's pic
      posted by  patrick of montreal on  Sat Mar 19 18:20 CST 2011
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Sat Oct 18 08:25 CST 2014
      [RELATED]

      what George said...To explain: your battery voltage cannot go from 12 to 0 (it can but only with a very defective battery). Your battery is part of the charging system your voltage meter reflects the entire system. Probably a loose connection, time to get dirty.
      --
      Patrick ('68 220, '92 Eurovan, '53 GMC PD4104)








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Voltage Regulator? 140-160

    posted by  Volvo From Heck on  Sat Mar 19 10:48 CST 2011
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Mon Oct 13 20:56 CST 2014
    [RELATED]

    I don't recall the location of the voltage regulator on all the 140's but on my '69 it is located on the r/s fender well behind the headlight. There could be either a Motorola or Bosch alternator--they use different regulators.-- Dave








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Voltage Regulator? 140-160

      posted by  cardog on  Sat Mar 19 21:18 CST 2011
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Mon Oct 13 10:29 CST 2014
      [RELATED]

      Thanks everyone for the input. I'll double check the voltmeter and wires.
      What happened is that after driving for the first time in a couple of months, (battery was not dead, but run down so I charged it) I was getting no reading on the volt guage, which I assumed was a bad connection. However afterwards I could not start. A quick jump and it started right up. Now sometimes I get a good reading while driving and sometimes the guage just drops to zero. It does seem like a connection, I had checked, but I guess I will have to check agaion and a bit better this time.
      I went to the local auto parts chain, they threw it on a tester and it reads "poor regulator"
      The current Voltage regulator is a reman aftermarket one from the PO. I was thinking they could stick open/close/fry/diode issue???
      Thanks again,
      CU








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Voltage Regulator? 140-160

        uid 4433's pic
        posted by  patrick of montreal on  Sun Mar 20 01:03 CST 2011
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Sat Oct 18 08:25 CST 2014
        [RELATED]

        check yours grounds, your battery connects and just the shape of all the wires. your symptoms are the kind that can be really hard to diagnose....but there will be an Ahah! moment and all will be well.
        --
        Patrick ('68 220, '92 Eurovan, '53 GMC PD4104)







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.