Alternator voltage regulator on V70 2.5T
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    1. #1
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      Alternator voltage regulator on V70 2.5T

      Hello,

      I would like to replace the voltage regulator on the alternator in my 2007 V70 2.5T. I recall reading somewhere that this can be done without removing the alternator. Could someone direct me to a video or instructions?

      Thank you!

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    3. #2
      Member Antherzoll's Avatar
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      Did this a while ago. It can all be accessed by removing the throttle pipe, fan, and throttle body IIRC. I think I have a post on it somewhere.
      2005 XC70 Crystal Green | Hilton | 16T | Bad Swede | 145k mi

    4. #3
      Member Antherzoll's Avatar
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      Last edited by Antherzoll; 02-10-2020 at 08:32 PM.
      2005 XC70 Crystal Green | Hilton | 16T | Bad Swede | 145k mi

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    6. #4
      Member LloydDobler's Avatar
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      That seems worse than just removing the alternator. If you pull the upper radiator hose and PS pump it's not too bad. You don't lose too much of either fluid.

      Maybe not, it's been a while since I've swapped an alternator.
      2003 C70 T5M Convertible - Eibachs, Koni FSDs, Enkei RSF5s, OBX downpipe, Snabb intake, RIP kit, & drop-in intercooler, Quaife LSD, 19T, Green Giants, 22 psi Hilton tune.
      2006 V70 2.5T - Ice White - Oak Arena, (almost) bone stock daily driver.
      1966 122s - Collectible project, restoration and many mods on the way.
      2005 V50 T5 AWD - Daughter's first car. No mods unless she does 'em herself.

    7. #5
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      If there is no rust on the tiny little Phillips screws fine but otherwise you will end up stripping the regulator screws from lack of direct access and then you are cooked. I would remove to replace.


      2002 V70XC, 2003 V40, 2004 S60, 2010 V70
      2010 V70 3.2 125,000miles
      2002 V70XC, 175,000 miles
      2004 S60 2.5T, 160,000 miles

    8. #6
      Junior Member db130's Avatar
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      Quote Originally Posted by bigtimemcalpine View Post
      If there is no rust on the tiny little Phillips screws fine but otherwise you will end up stripping the regulator screws from lack of direct access and then you are cooked. I would remove to replace.


      2002 V70XC, 2003 V40, 2004 S60, 2010 V70
      Quoted for truth. I have done this job on both the NA and the t5m and those screws were crusty. In fact, I would recommend buying a #2 Philips bit socket for a 3/8" ratchet. Would definitely recommend removing the alternator to get to the regulator.

      Sent from my LG-H910 using Tapatalk
      2002 V70 T5a 190k RTI/Hilton Stage 1/336mm brakes/Bilstein B8s/H&R springs
      2002 V70 NA 274k HU-803/T5 suspension/305mm brakes
      2003 V70 T5m 250k Hilton Stage 2/Delrin subframe bushings/R front sway bar/R manifold/Jetex catback/Re-Volv DP/Simota CCI
      2013 S60 T6 R-Design 68k IPD RSB

    9. #7
      Member Antherzoll's Avatar
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      Philips #2 sucks. On Old Fasteners, I'll hit the screwdriver once with a pair of pliers To bury it into the screw, then try to break it free by tightening it a little bit... and a sharp bit, not the one that's been kicking around your toolbox for the last 20 years.
      Last edited by Antherzoll; 02-11-2020 at 01:44 PM.
      2005 XC70 Crystal Green | Hilton | 16T | Bad Swede | 145k mi

    10. #8
      Member Antherzoll's Avatar
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      Quote Originally Posted by LloydDobler View Post
      That seems worse than just removing the alternator. If you pull the upper radiator hose and PS pump it's not too bad. You don't lose too much of either fluid.

      Maybe not, it's been a while since I've swapped an alternator.
      It's the way I did it back then. You need access to the back of the alternator anyways to remove the leads, how much more work is it to replace the regulator in place?
      2005 XC70 Crystal Green | Hilton | 16T | Bad Swede | 145k mi

    11. #9
      In my 2006 V70 2.5t I just had to snake my hands in to remove the regulator and swap it out. No need to remove anything that I recall. It wasn't a whole lot of room, but it worked.

    12. #10
      Member LloydDobler's Avatar
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      Someone has little girly hands!


      (J/K, I have moderately small hands myself)
      2003 C70 T5M Convertible - Eibachs, Koni FSDs, Enkei RSF5s, OBX downpipe, Snabb intake, RIP kit, & drop-in intercooler, Quaife LSD, 19T, Green Giants, 22 psi Hilton tune.
      2006 V70 2.5T - Ice White - Oak Arena, (almost) bone stock daily driver.
      1966 122s - Collectible project, restoration and many mods on the way.
      2005 V50 T5 AWD - Daughter's first car. No mods unless she does 'em herself.

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