VW Jetta MKIV/MK4: losing coolant....again -___- |Volkswagen Bora
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Thread: losing coolant....again -___-

  1. #1
    Member Trevor Roy is on a distinguished road Trevor Roy's Avatar
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    Default losing coolant....again -___-

    hi i have a 2000 jetta gls vr6 im having a weird problem with my coolant. The other day after i drove home from work and parked before i shut my car off i saw my coolant temp drop from 190 all the way to the first notch out of nowhere really quickly. I shut it off and looked at the reservoir and it seemed to be at the level it should be the next day i start up the car and get a coolant warning light and look to see and all my coolant is pretty much gone without a puddle under my car. I previously repaired a couple coolant leaks one on the thermostat housing and the other two were from the hoses that went to the heater core on the firewall. Can anyone point me in the right direction as to where to start looking?
    just bought a dub O_O

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    rollin deep bikerkid9069 is on a distinguished road bikerkid9069's Avatar
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    Default Re: losing coolant....again -___-

    have you checked your crackpipe?
    sick of seeing corvette rims on mk4's

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    Euro Snob Vixen is on a distinguished road Vixen's Avatar
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    Check crack pipe and water pump.
    Funny, you've had leaks exactly where I have.
    IMD | IG @VixenVR6

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    Member Trevor Roy is on a distinguished road Trevor Roy's Avatar
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    Default Re: losing coolant....again -___-

    no i havent is there any specific place on the crackpipe that would be most prone to errr cracking? lol and wouldnt these two cause a puddle to form under my car? also what would explain my coolant temperature dropping so rapidly?that has me really worried. The heater core hoses were an easy fix the thermostat housing on the other hand was annoying.
    just bought a dub O_O

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    Euro Snob Vixen is on a distinguished road Vixen's Avatar
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    Did you change your thermostat itself? Well, the crackpipe is tricky to check, you'd have to take apart the thermostat housig and more, it's quite a way back there. Water pump will be easier, on the passanger side of the block, if its bad you'll be able to see some coolant on the top of you splash guard, around the water pump pulley etc. When my water pump failed it didn't leave a puddle under my car because it was pooling on the splash guard.
    IMD | IG @VixenVR6

  6. #6
    Member Trevor Roy is on a distinguished road Trevor Roy's Avatar
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    Default Re: losing coolant....again -___-

    yeah i replaced the entire housing as well as the thermostat itself only thing i really kept was the coolant temp sensor since its a green top. The thermostat housing itself connects to one end of the crackpipe doesnt it? im pretty sure i saw it when i replaced the thermostat housing or was that something else? and i think my splashguard is missing actually if your talking about the one under the oilpan
    just bought a dub O_O

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    Sticker Whore Slider8500 is on a distinguished road Slider8500's Avatar
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    Default Re: losing coolant....again -___-

    Sounds like when my water pump went. Drive it around and get it good and warm. After that park it and see if anything drips (except the A/C of course). When my water pump went I could drive it and see it dripping from the splash guard. Just make sure that you don't use water in the coolant, I hear it's not good on the water pump seal.
    Don't get me wrong, I my Jetta, but RWD is where my right foot is.

  8. #8
    Member Trevor Roy is on a distinguished road Trevor Roy's Avatar
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    Default Re: losing coolant....again -___-

    thank you everyone for all the help its not my crackpipe ,my car is overdue for a water pump should have been changed 15,000 miles ago but apparently the previous owner decided it didnt matter -___-
    just bought a dub O_O

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    Euro Snob Vixen is on a distinguished road Vixen's Avatar
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    Default Re: losing coolant....again -___-

    Quote Originally Posted by Trevor Roy View Post
    thank you everyone for all the help its not my crackpipe ,my car is overdue for a water pump should have been changed 15,000 miles ago but apparently the previous owner decided it didnt matter -___-
    The water pump is fairly easy to change, if you have the know how I would do it yourself and save yourself about $400. I spent about $60 IIRC on the water pump with metal impellers and a new pulley, did the install in a day. Theres a write up on the 'tex I can get for you if you're interested in doing it.
    IMD | IG @VixenVR6

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    Member Trevor Roy is on a distinguished road Trevor Roy's Avatar
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    Default Re: losing coolant....again -___-

    that would be extremely thoughtful of you =] thank you again
    just bought a dub O_O

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    Euro Snob Vixen is on a distinguished road Vixen's Avatar
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    Default Re: losing coolant....again -___-

    Quote Originally Posted by Trevor Roy View Post
    that would be extremely thoughtful of you =] thank you again
    http://forums.vwvortex.com/showthread.php?1154344 That's what I used. I know in that write up it says not to jack the engine up more than 1 3/4" before the O2 starts to bind, but I got mine a little higher than that, just have to watch that O2.
    IMD | IG @VixenVR6

  12. #12

    Default Re: losing coolant....again -___-

    Quote Originally Posted by Trevor Roy View Post
    thank you everyone for all the help its not my crackpipe ,my car is overdue for a water pump should have been changed 15,000 miles ago but apparently the previous owner decided it didnt matter -___-
    So, I am a bit confused. I have a 1.8t. Do you have to change the water pump every 15k even if it is good?
    Last edited by Hectorgmontano; 06-20-2011 at 12:10 AM. Reason: To include quote

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    Euro Snob Vixen is on a distinguished road Vixen's Avatar
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    Quote Originally Posted by Hectorgmontano View Post
    So, I am a bit confused. I have a 1.8t. Do you have to change the water pump every 15k even if it is good?
    No... water pump is every 80k for every mk4.
    IMD | IG @VixenVR6

  14. #14
    Jetta Junkie Moderator pow3r hour has disabled reputation pow3r hour's Avatar
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    Default Re: losing coolant....again -___-

    I would check your oil as well and maybe do a compression test to be sure you dont have a blown head gasket and thats why your not seeing any coolant leak. Also, do the waterpump yourself. If you have any problems, vixen, myself, or a few other people on here can help you through it no prob.

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    Member Trevor Roy is on a distinguished road Trevor Roy's Avatar
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    Default Re: losing coolant....again -___-

    Quote Originally Posted by Hectorgmontano View Post
    So, I am a bit confused. I have a 1.8t. Do you have to change the water pump every 15k even if it is good?
    no lol i said 15k because my car has 95k on it so 95 minus 15 is 80 and also i really appreciate all the help you guys are giving me i have everything ordered already just waiting for my parts to come
    just bought a dub O_O

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    Member Eric Sanchez is on a distinguished road Eric Sanchez's Avatar
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    Default Re: losing coolant....again -___-

    the water pump change should be easy with the write up most people follow the bently manuals and make it simpler. should take you more than four hours.
    mExIcAn MKIII

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