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    Thread: Water pump change How to?

    1. 04-11-2011 08:02 PM #1
      I am just getting my ears wet with my 2006 Jetta 2.5 and I need to change to water pump. I've changed water pumps before but I'm not familiar with my VW. Has anyone done a "How to" on changing the water pump? I've done a fair amount of searching but I couldn't find anything. Or could someone point me in the right direction? I am going to attempt it reguarless of help but I would just like to disassemble my car as little as I need. Thanks!

    2. 04-12-2011 11:55 AM #2
      You will need two jacks. First, one jack SUPPORTS the oil pan. Next, the second jack SUPPORTS the transmission. Do not punch a hole in these!!! Use a 2x4 or something to spread out the force of the jack!!!! Finally, remove the transmission mount and the engine mount over your accessory belt.

      Now that all this is done, CAREFULLY jack up the engine and lower the transmission. Twisting the engine just enough to get to the water pump, not an inch more!

      I have no torque specs or any idea which bolts are stretch bolts. I do know the lower mount bolts need to be replaced and torqued to spec per the VW TSB pertaining to knocking under load. The bentley manual or other sources including the dealership will not give you the proper specs for this mount. Refer to the TSB on the lower engine mount for these specs!!!!

      Good luck and I in no way take any responsibility for this repair. If you couldn't figure this much out on your own I would just take it in to the shop. If you take it to the shop find the TSB pertaining to the transmission mount torque specs and sympton "knocking under load". Otherwise they'll get the torque wrong too.

      I did a quick google search for you and came up with this thread containing some pictures http://volkswagenownersclub.com/vw/s...187-water-pump

      Why does your car need a new water pump already? Have you messed with the coolant at all? Be advised, these motors need special coolant to avoid corrosion of dissimilar metals. You need a special silicate and phospate free coolant, not just a "universal" coolant. There is a big difference between these two. Running the wrong coolant will corrode your cylinder head and destroy the head gasket. Again, SILICATE AND PHOSPATE free. Zerex g-05 is what crysler uses, vw/audi uses gXX.... whatever. Just be certain that whatever you put back in there is the right stuff not just "universal" coolant.

      The correct coolant is imperative and not just a gimmick. I have torn down vw's with ally cylinder heads before and seen the aftermath of the wrong coolant. Again, I'm not talking about "mixing" coolant. I'm talking about corrosion of dissimilar metals. The motor I tore down was thought to need a new head gasket but once we pulled the head looked like it had rusted from the inside out. The coolant passages themselves were heavily pitted and in some places destroyed.
      Last edited by kungfoojesus; 04-12-2011 at 12:06 PM.

    3. 04-12-2011 01:55 PM #3
      Thanks for your help! That sound just like I've done before. Who knows, unless someone else has done it, when I do it this weekend I might even take pictures to help out my fellow newbies with this task.

    4. 04-12-2011 03:22 PM #4
      I had my window open for a while, didn't update and I just caught your additions. We took it into our VW dealer for its oil change and they mentioned that it was leaking. In the 4ish years that we have had it any work under the hood, with the exception of one oil change, our VW dealer has done everything. I am aware of the VW specific coolant and will be buying one of the jugs when I purchase the water pump from VW.

    5. 05-23-2016 01:28 AM #5
      I realize this thread is a couple of years old. It's the most germane link to replacing the water pump on a MKV 2.5L Jetta.

      A user here claimed that it's possible to replace the coolant pump if the passenger headlight is removed. This could imply that it's unnecessary to remove both mounts and support the engine/tranny on separate floor jacks. I am wondering if anyone on this site can vouch for that process. I don't like the idea of removing both motor mounts and floating the engine/tranny on floor jacks for prolonged periods of time, and I don't want to rush my work.

      Alternatively, I looked at this DIY thread for replacing the accessory belts, tensioners, and idler pulleys. While scrolling through the pictures, it appears that there maybe barely enough room to remove the coolant pump, provided that all tensioners and idler pulleys are out.

      Can anyone comment on whether there is clearance to replace the coolant pump, without having to remove both engine mounts?

      Thanks!!
      Last edited by Master_P; 05-25-2016 at 07:43 PM.
      2007 Jetta BGQ 6-speed Tip-tronic

    6. Member JettaMk5's Avatar
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      05-24-2016 08:55 PM #6
      Quote Originally Posted by Master_P View Post
      I realize this thread is a couple of years old. It's the most germane link to replacing the water pump on a MKV 2.5L Jetta.

      Can anyone comment on whether there is clearance to replace the coolant pump, without having to remove both engine mounts?

      Thanks!!
      It's under the intake manifold, but removing that takes a special tool or extensions and the right bit etc, good idea to do the intake O rings too. I wouldn't want to move the engine/transmission to do it either. Removing all of the pulleys and laying under the jacked up car and trying to wiggle it out seems like a PITA way to do it to me. I've never attempted it through the headlight, but maybe it would fit through? You'd still need access to unhook the connections to the water pump which is not trivial with the intake and pump and hoses etc in the way. There may be a more "proper" answer, YMMV, etc etc

      Good Luck!

    7. Awaiting Email Confirmation Bora Jon's Avatar
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      05-24-2016 09:30 PM #7
      Quote Originally Posted by JettaMk5 View Post
      It's under the intake manifold, but removing that takes a special tool or extensions and the right bit etc, good idea to do the intake O rings too. I wouldn't want to move the engine/transmission to do it either. Removing all of the pulleys and laying under the jacked up car and trying to wiggle it out seems like a PITA way to do it to me. I've never attempted it through the headlight, but maybe it would fit through? You'd still need access to unhook the connections to the water pump which is not trivial with the intake and pump and hoses etc in the way. There may be a more "proper" answer, YMMV, etc etc

      Good Luck!
      water pump is NOT under the manifold. it is near the motor mount and is externally belt driven. removing the headlight will probably take longer than just doing it with the wheel off, if you have patience and assorted short and long sockets for these hex and triple squares it should be doable. I did the tensioners in my car without removing any motor mounts, or extra bolts. that being said I didn't remove the water pump, but it is three bolts, every water pump I have done the most difficult part has been getting it out. the rest is pretty easy. the tensioner diy linked above shows the pulley for the water pump clearly in several shots

    8. 05-25-2016 09:05 PM #8
      Quote Originally Posted by Bora Jon View Post
      water pump is NOT under the manifold. it is near the motor mount and is externally belt driven. removing the headlight will probably take longer than just doing it with the wheel off, if you have patience and assorted short and long sockets for these hex and triple squares it should be doable. I did the tensioners in my car without removing any motor mounts, or extra bolts. that being said I didn't remove the water pump, but it is three bolts, every water pump I have done the most difficult part has been getting it out. the rest is pretty easy. the tensioner diy linked above shows the pulley for the water pump clearly in several shots
      Correct. The water pump is adjacent to the passenger-side engine mount, and is belt driven.

      I plan on replacing the serpentine belts, tensioners, and idler pulleys so I must remove the passenger wheel and inner fender well cover. I am skeptical if the water pump can come out through the wheel well, otherwise the Bentley manual would call for this as the standard process. This would be the easiest way to remove the pump if it was possible.

      I am certain I can replace both serpentine belts, tensioners, and idler pulleys without removing the motor mount. Removing and installing the water pump is the problem. I need to know if there is enough room to pull the old pump out, and put the new pump in, with the motor mount in place. If so, what's the best way to do it?

      My Jetta is coming up on 150,000 miles. This would be a preventative maintenance replacement. The internet is pretty sparse on details for this engine model/year.

      Alternatively, I could just pull off the entire front end (bumper, radiator, and rad support), so I could swap out the thermostat. May as well pull everything off so it's super easy to work and see everything. Anyone find a good DIY for that?
      2007 Jetta BGQ 6-speed Tip-tronic

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