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  1. Intermittent Heat, Core flushed, system bled, is it my water pump?

    Volkswagen Passat B5 Discussion
    Hey there guys, VW: Adopted 2002 GLX Wagon 4Mo 2.8L Automatic with 131k miles. Did a bunch of stuff to get it all nice and happy. For the most part, it is (shy of a hole in a flex pipe) running pretty well. With winter coming up I wanted to check the heat...and it is still being wonky. Last...
  2. Replacing core support - need help identifying part.

    Volkswagen Passat B5 Discussion
    I am working on my wife's 2003 Passat GLX 4Motion, it was recently in an accident and the core support, radiator, and cooling fans (among other things) were damaged and need to be replaced. While disassembling everything I came across another part that needs to be replaced but I'm not sure...
  3. Looking for heater core firewall nipple repair posts

    B5 Garage
    Good morning! Sorry for this post, but despite searching on a variety of terms and looking in the Information Base, I cannot find the handful of posts on this topic (except for the one using the Prestone flush kit--I found that one). In particular, I'm looking for one where someone added copper...
  4. Heater core pipe leaking!!!!

    Volkswagen Passat B5 Discussion
    So I have the dreaded heater core plastic pipe leaking :( It's leaking from the pipe that doesn't have the bleeder on the hose (The inlet pipe)? It looks to be 2 pin holes between the rubber boot and the hose. I know the fix is to replace the HC but I don't have time to do that now. There was...
  5. Replacing the Heater Core

    B5 Garage
    :wrench::wrench::wrench: Winter has come, and my heater core has decided that it's time to go out on me. I've never tried to tackle this job by myself, and since it's close to Christmas, I'd prefer not to spend the money with a shop. I know the method most of the repair manuals provides, which...
  6. Have you Changed the Heater Core the "Fast" Way?

    B5 Garage
    Have a 2003 1.8t with an AT. Wanting to change the heater core by pulling the dash out as a complete unit (the fast way). I have done this before and it worked great. But this time I am stuck. I have done everything on the youtube video except removing the nut from the wiper mechanism (I...
  7. Heater Core placement question

    Volkswagen Passat B5 Discussion
    Is there no other place the HC can go?? Maybe moving the Battery to the trunk and putting it where the battery was? Is there any reason why it has to go back where it currently sits? Just curious as it is a decent sized project when replacement is called on. Thanks
  8. Heater core inlet/outlet woes.

    Volkswagen Passat B5 Discussion
    Hey folks, so after doing a whole lot of work (timing belt, oil seals, alternator regulator, cabin filter leak) this summer/fall on the Passat going to my son's mother, I've run into another issue that I'm hopeful I can resolve with some of the info I've gathered on the site. After a couple of...
  9. Is it the heater core?

    Volkswagen Passat B5 Discussion
    Hi all, 2003, 1.8t Today I discovered that the driver floorwell, the center area, is wet but not soaking wet. When I scraped the carpet with my shoe heel, very little water accumulated. The car sat in the garage for the last 4 weeks so I don’t think it’s the sunroof or else. I touched the...
  10. B5.5 Heater core question

    B5 Garage
    Hey guys, this has never happened to me but I was just driving and my car started overheating. As I was pulling it over, it sounded like my heater core popped and coolant steam entered my cab. I will say that I had just recently changed the thermostat housing and thermostat. I had just purged...
  11. Heater Core Flush Success!

    Volkswagen Passat B5 Discussion
    Just completed the heater core reverse flush of my wife's B5.5 2004 Passat. :D I think it took longer to put the jig together than it did to flush out the core. The heater is now blowing HOT!!!! Thank you for passatworld.com. There was some sediment and it took about 5 five gallon buckets...
  12. Heater core hose

    B5 Garage
    So I drive an 01 Passat 4motion V6 wagon. Last weekend, I started dumping coolant everywhere. Upon further inspection, I found the heater core inlet hose broken off (not from the heater core but from the other end way down behind the block) I got it all apart and everything. What I really need...
  13. Doing a heater core swap - should I replace A/C evap too?

    Volkswagen Passat B5 Discussion
    I'm about to start the mammoth job of pulling the dash and swapping the heater core on my 03 V6 Wagon. I found a nearly mint salvaged dash assembly to replace my current dash while I'm at it, which is cracked and ugly. Question I have is ... does it make sense to swap the a/c evaporator at...
  14. Heater core recommended brand

    Volkswagen Passat B5 Discussion
    I'm in the inevitable necessity of replacing my heater core and have been looking for something other than VW original due to the price tag so I am looking for something reliable but not that expensive. I have seen a bunch of different brands and prices and of course I don't want to install a...
  15. Going to flush heater core, couple q's

    Volkswagen Passat B5 Discussion
    Hey all! Need to flush my heater core, barely any heat at idle. I have most everything to get it done, but I still don't know a couple of things, -Which port is inlet/outlet? I think passenger is outlet... Please correct me if I'm wrong -Car has orange coolant as of right now, what would I...
  16. Did a heater core bypass...

    Volkswagen Passat B5 Discussion
    For some reason the tubes seem ultra hot sometimes, like melt the rubber hot. Also, I pinched a little out of the hole in the tube, but it seemed like a lot more kept dripping down. Snapped this photo. Little curious to what that hole is there for.
  17. Did heater core bypass. Hole in tube?

    Volkswagen Passat B5 Discussion
    For some reason this hole became in this tube. What's going on?
  18. Heater Issue.. No flow to heater core.

    Volkswagen Passat B5 Discussion
    Okay my 2003 V6 has developed a weak heat problem. It is manual controlled so no climatrol to deal with. I read many posts and used my digital non contact thermometer to check the heater core pipes. They were colder than should be. I did a heater core flush today, with the Blue Seal heavy duty...
  19. B5.5 Passat Heater Core Replacement Made Easy Vid

    B5 Garage
    So I may have to change my heater core and I just can't fathom on spending the cost of bringing it to a shop. Anyhow came across a couple vids that made it look as if a DYI is do-able. Anyone out there with experience that can add to this? www.youtube.com/watch?v=J40bceY8mF0
  20. Heater Core Flush: An exercise in overthinking

    Volkswagen Passat B5 Discussion
    First post. My parents gave my son their old 2000 Passat for his get around car. 110K miles. Absolutely no heat at all. I mean ice cold air. So of course we dug around the forum and on youtube and saw all sorts of solutions using CLR, air compressors, jet washers etc... We finally got...
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