110degree coolant with slim fan -update- Guage still not showing over 80deg

Discussion in 'VR5, VR6 & Wx' started by 1990, Sep 13, 2010.

  1. 1990

    1990 Paid Member Paid Member

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    Great, thanks. I've got new stainless bolts now and should get the seals tomorow morning.
     
  2. G-Man Forum Junkie

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    I used original VW seals but as my housing was non VW I used liquid gasket just to make sure it was ok as I wasn't 100% sure my non-vw housing would seal too well looking by the way some of the housing came together [:s]

    So i take it your crack pipe surived?!?! :lol: The cooling nipple that goes to the oil cooler broke up on mine and the end of the pipe crumbled. Sounds like you've been lucky!
     
  3. 1990

    1990 Paid Member Paid Member

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    Yep, I was thinking i'd need a full housing while I was drilling the bolts out but it worked out rather nicely.

    If the fans/coolant all work as they should i'm going to go back to Chip Wizards for another run on the rollers.
     
  4. 1990

    1990 Paid Member Paid Member

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    Finally got the housing bolted back on.

    How much coolant do I need to put in there and what type should I be using? I'll be passing GSF and ECP on my travells today so any advice will be appreciated.
     
  5. Rayhoop Paid Member Paid Member

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    I got my coolant from GSF... I think I bought 2 bottle of coolant that was to be mixed with water to the correct concentration.

    I believe the total capacity of the cooling system is approx 9 litres
     
  6. 1990

    1990 Paid Member Paid Member

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    All done now, there is a drip from one hose otherwise all fine. Water temp rises quicker and the twin fans kick in.

    Last question, does the fan wiring need a fuse? What amp? At the moment its direct to the battery.
     
  7. rubjonny

    rubjonny Administrator Staff Member Admin

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    it has a 30a fuse, from the factory there is a 2 pin plug near the battery with a red and brown wire, this is where the fan loom plugs in. it comes out of the headlight loom, its the one with the 2 spade connections in the odd shaped plug
     
  8. 1990

    1990 Paid Member Paid Member

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    I dontnhave that wire anymore. I'll put a 30amp inline fuse onto it. Cheers!!!

    Repaint soon!!!
     
  9. 1990

    1990 Paid Member Paid Member

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    GGGGGGRRRRRRRRRRRR!!!!!! OK last night, 50 mile round trip t0 CGTI Manchester.

    Didn't stop in any traffic, coolant on the clocks didn't show over 75 the whole time. Oil temp was 102 max.

    Whats the next step? Vag Com to compare the guage with the actual temp?

    Car also smells of fuel, ticks over at 500rpm and rev drop to 250rpm for a second when I stop. It cut out once last night when I pulled upto some lights and started again very easily.
     
  10. rubjonny

    rubjonny Administrator Staff Member Admin

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    aye see what the ecu thinks temp is :)
     
  11. G-Man Forum Junkie

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    Correct me if i'm wrong, blue temp sensor is for the ECU and yellow is for the cluster to be blunt?

    I ended up getting a new blue from VW and 2nd hand working yellow sensor when I got fed up of it running rich.

    Oil temp at 102?! Was that literally giving it some proper beans? At this cold'er weather lately even giving it stick i only get to 98*C at the moment.
     
  12. rubjonny

    rubjonny Administrator Staff Member Admin

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    coolant temp for dash is 4 pin on these i think, but blue iirc is for ecu as you say. i meant check vag-com so we can get another reference for coolant temp. i.e., if ecu also thinks coolant is 75degrees, we have over-cooling. if higher, we have dash reading low either due to cluster, wiring or sensor fault
     
  13. G-Man Forum Junkie

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    Yep 4 pin for yellow dash sensor. Is the needle actually moving then on the dash?

    If not check the wiring as I found mine had perished away and had to re-check it to get it all back to normal.

    I assume you replaced the thermostat also? As mine when it was stuck open was over cooling and constantly running rich! What brand did you get, as I had two rated the same but when I put them in a pan of boiling water they opened up at different temps despite their ratings? Shame at the time I didn't record the actual temp they opened.
     
  14. 1990

    1990 Paid Member Paid Member

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    I used a genuine one, wagner??? I know the wires are all good. I unwrapped the loom a while back and checked every inch of each one.

    The needle does move but doesnt pass 80 unless I hit traffic and when it gets hotter the new fans come on and work as treat.

    I'm trying to get a copy of vag com to work on my vista laptop so I can test it.
     
  15. G-Man Forum Junkie

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    So the needle rises to getting hot, at which point the fan's will also kick in? So shows both the fan sensor and dash sensor detect the rise in the temp to a point where it needs cooling.

    The blue sensor, ECU, I thought won't impact the physical cooling much as naturally its controlled by the stat.

    Just a rare possibility that the stat is maybe faulty and opening at a lower temp than its rating?

    http://the-corrado.net/forum/viewtopic.php?f=1&t=68720
     
  16. 1990

    1990 Paid Member Paid Member

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    Cant find my ****ing cable now[:x]

    Just started it on the drive and let it idle. Water went to 85ish and oil to 90, fan was on everthing seemed fine.

    [​IMG]
     
    Last edited: Oct 21, 2010
  17. rubjonny

    rubjonny Administrator Staff Member Admin

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    fan shouldnt be on till near 100 water temp, or wherever 3/4 on the gauge. certainly shouldn't be on when oil is 90degrees, thats barely warmed up.

    either fan sensor or dasdh clocks are wrong here methinks. ecu blue temp wont have any impact on the coolant temp, its just reading it. coolant temp is effected only by thermostat and fan operation
     
  18. seanwhite06 New Member

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    fan on my mk2 vr6 comes on at 90 water temp.
    if water temp gets to just past 100 fan comes on speed 2
    on the move, weather at speed or town driving, temps both always sit smack on 90 ish,
    only ever creeps up in heavy traffic.

    done exactly the same when the vr6 was in the mk3 shell, and the mk3 8v daily does exactly the same aswell!

    edit: mk2 vr6 running mk3 rad and twin fan setup wired in exacty how the vr should be with the mk3 loom! so pretty certain it all works as it should!
     
    Last edited: Oct 21, 2010
  19. rubjonny

    rubjonny Administrator Staff Member Admin

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    90degrees water temp is too early, the normal operation of the engien the temp should be at 90, thats just about when the stat should open. though its worth noting that the mk3 gauge might be a bit liek the mk4, where '90' actually means something like 80-110, to prevent the driver getting scared the temps are too high :lol:
    mk2 gauge reads pretty much exactly what the engine is at. there is info out there on how to convert the mk4 gauge to read properly as well

    the rad fan sensor is rated at 95 for the 1st speed, and 105 for the 2nd speed. bare in mind the rad wont be at 95 when the engine is just at 90, as the rad temps will be cooler at this stage due to it being, well a rad :lol:

    it will take a while after the stat has opened for rad to get to same temp as the engine, so engine will be prob 100ish before rad sensor sees 95. what are the oil temps when the fans kick in
     
  20. seanwhite06 New Member

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    vag com usually shows temps a couple of degrees higher than the clocks, but only like 3 or 4degrees so mk3 clocks seem pretty accurate.

    used to run mk2 clocks when first converted ( changed to mk3 as couldnt get rev counter to work) and it always showed the same temps on them aswell.
    mates mk3 vr behaves exactly the same too.

    also worth noteing that the vr stat is an 80 degrees not a 86 like 8v's etc. guessing this is because the vr is a big hot engine so helps it keep a little cooler.
     

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