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coolant

  1. Coolant problem

    Engine & Gearbox
    Hi All, I have owned a mk2 golf GTI cab in the past and had such great help from the forums, so i have been on these forums a little, sorry if I get any etiqeutte wrong!!! It’s been a while... I have now bought a VW T5 2007 transporter, to convert into a camper. On the face of it, the van...
  2. Coolant leak

    Engine & Gearbox
    Good afternoon, I’ve been an avid reader here for some time, knowledge here is unsurpassed 👍.. I currently own a T5.1 2010 140k on the clock. Engine has recently developed a coolant leak, coolant is clear of oil as is the reservoir tank. I have narrowed down the leak to a section shown in the...
  3. Coolant Change Problem - Can anyone help please!?

    Engine & Gearbox
    Good afternoon.. Did the usual Oil Change on my Van today, figured while I had the under tray off, I would give the coolant a flush and change as I haven't done this since buying the van. I dropped all the old coolant out and flushed through the radiator with a hose. I refilled the system...
  4. T4 Coolant Change and Flush

    Engine & Gearbox
    Hi everyone, hope you're all okay and healthy during this lock down.. I am just putting this up here for some guidance on a Coolant Change and flush.. I've got a 1998 T4 Caravelle LWB 2.5 TDI (ACV Engine) . I've done plenty of coolant changes/flushes before on my other cars in the past but...
  5. Which coolant / anti-freeze

    Engine & Gearbox
    My 2015 T5 has pink coolant. The recommended coolant is G13, which as far as I can see all seems to be purple. I'm changing cam belt so it's not just a top up. Should I use purple G13 which will mix with the pink coolant. The current pink would have been the factory fill. This website has a...
  6. Coolant light - low header tank

    Engine & Gearbox
    Hi - I have a '03 T4 with 190k miles in really good condition (no oil drinking or smoking) Just recently had the water temp warning light on - pulled over, header tank is low - topped up with coolant mix (carry spare and oil) Did 150 miles that day with no light back on. Left for a week...
  7. Smell T4 rear heater

    General Technical
    Hey everyone, first post, after reading the forums for a few months I finally got my hands on a T4 Kombi Petrol from 2004. I removed the mat and the plastic vent on the floor behind the driver seat to do a deep clean and noticed some smell (I think it's coolant) in the cab after driving for 20...
  8. Coolant leak from under van by fuel cooler

    Engine & Gearbox
    Hi All, We have started to loose coolant, slowly. The low level light is on, which is good, because it mean sit's working! We still have some coolant in the bottle and I was about to drain/replace and decided to warm the enging up first. Noticed a leak from under the van - dripping from an...
  9. Questions about the Webasto Thermo Top C to parking / auxiliary heater upgrade

    T5 Conversions
    So I have the optional VW modified CANBUS Thermo Top C on board which acts as a supplementary heater to boost the coolant to operating temperature on cold days (<10C) In my last Caravelle I installed the engine preheater / parking heater upgrade to defrost the window in the winter and pre-heat...
  10. Questions about the Webasto Thermo Top C to parking / auxiliary heater upgrade

    Technical Threads
    So I have the optional VW modified CANBUS Thermo Top C on board which acts as a supplementary heater to boost the coolant to operating temperature on cold days (<10C) In my last Caravelle I installed the engine preheater / parking heater upgrade to defrost the window in the winter and pre-heat...
  11. Rear heater removal - coolant flow direction

    Engine & Gearbox
    After installing an Eberspecher I removed the rear heater but I did not pay attention to the flow direction of the rubber hoses. I want to install a calorifier and need to know in which direction the coolant flows. Is there something to test this maybe open the circuit again with the hoses in a...
  12. Coolant warning light - temperamental

    Engine & Gearbox
    Hi, newbie posting, so hopefully someone can help. I have 1.9 Tdi (2006) LWB T5 (136k miles) and recently coolant alarm light flashes upon starting the van, most notably if it has sat for a couple of days. If you look at the expansion tank, the level looks a bit low. My mate says this happens...
  13. T5 AXE problem

    Engine & Gearbox
    hi all, i have a T5 AXE engine Caravelle. I recently experienced difficulty starting in the mornings. Then noticed diesel in the coolant reservoir . I flushed the system but diesel seem to get back in the coolant. I've been told that it could be related to a blown cylinder head gasket. Any ideas?
  14. O ring ? 1.9 Tdi AXB leaking coolant down left side of engine

    Engine & Gearbox
    Still cant chase off this leak and after doing the thermostat amongst some pro-active refurb work, I think I have located the leak's.... Coolant is pooling under the sump, which looks to be over the power steering pump too, which I assumed was running off the thermostat pipe. I think coolant...
  15. Disappearing coolant a T5 with 2.5 TDI engine

    Engine & Gearbox
    Hello! I have a mystery to solve on my van: The mystery of disappearing coolant About two months ago my van asked me nicely to top up coolant, which was the first time it happened after 4 months and 3000 miles of me having it. Since then I had to put in 2 litres of coolant and I did around...
  16. VW T4 1.9TDi Coolant Rubber Pipes

    Engine & Gearbox
    After a nasty diesel leak from one of the fuel injectors in the engine bay, I now find most of the rubber coolant pipes are splitting and or blown. The solution would be to replace those damaged pipes with new pipes or try and patch as a temp fix. Anybody have any recommendation as to where...
  17. Leaking pipes and coolant conundrum. :(

    Engine & Gearbox
    Hello! My T4 is losing water. It's gradually got worse so now I can lose the max to min level in about 200 miles (and I drive about 80 to and from work every day). Coolant seems to be coming out multiple pipes at the bottom of the engine near the thermostat and the radiator. I've...
  18. Sludge on oil cap

    Engine & Gearbox
    Hi everyone, This is my first post but I've enjoyed this forum for a while now, it's so awesome to have all those brains working together. Now I do have a problem myself... When I was prepping my van for a trip to Finland (-35c°) I saw the garage owner put the wrong coolant in. (He changed...
  19. Head gasket / coolant loss...

    Engine & Gearbox
    T5 1.9 84 120k I think I have been unlucky and picked a problem van as already changed starter, engine mounts, drive shaft, anti roll bar links, front wrap around coolant pipe after just 7 months of ownership. My latest issue is it is loosing coolant on long journeys and under load, while temp...
  20. Coolant hoses

    Engine & Gearbox
    Hi all. This is my first post to the forums since buying my first T4 in Dec 14. My van is currently in the garage having a few oil leaks sorted out and whilst there, they pointed out that some of my coolant pipes are perishing and starting to leak. I love my new van very much and want to replace...
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