1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Running temps water/oil B5 1.8t

Discussion in 'A4/S4 forum(B5 Chassis)' started by Darknights, Dec 24, 2013.

  1. Darknights
    Offline

    Darknights New Member

    Joined:
    Aug 14, 2013
    Messages:
    16
    Likes Received:
    0
    [Dec 24, 2013]
    Hi guys, just wondering what the normal correct warmed up running temps should be for my 2001 Audi A4 avant 1.8t? The oil/water gauges hardly seem to move off the 60 mark? Also the MPG seems a bit low? Wondering if temp sensors are shot causing engine to think ya always cold and over fuel?

    It's a 1.8t running an MRC stage 1 remap at supposedly 203bhp? The most MPG I can seem to get if I drive like a total granny and totally off boost is 24.8, Seems a tad low?....
    #1
  2. Ads

    Ads

    [Sep 16, 2014]

  3. mojocvh
    Offline

    mojocvh Member

    Joined:
    Aug 22, 2013
    Messages:
    121
    Likes Received:
    10
    [Dec 24, 2013]
    Well at least you have the oil and water temps in sync!
    Now, I'm no expert but how quickly does it warm up?? does it have a thermostat stuck open 100% [fail safe at least]???
    #2
  4. Darknights
    Offline

    Darknights New Member

    Joined:
    Aug 14, 2013
    Messages:
    16
    Likes Received:
    0
    [Dec 24, 2013]
    That's the thing, I'm never really sure it has warmed up as gauges barely move. My stat is stuck?... Might invest in a new one after Xmas and maybe temp sensors.
    Any ideas what a general MPG should be on a B5 A4? Kinda thought I could get more like 30 if I drove like an OAP ;-) lol

    Seems to cost loads to run in petrol, though my other motor is a mk4 TDI PD115 estate ;-)
    #3
  5. B5NUT
    Offline

    B5NUT Well-Known Member VCDS Map User

    Joined:
    Feb 6, 2010
    Messages:
    2,281
    Likes Received:
    256
    [Dec 24, 2013]
    I would say a bad stat, your temp water temp should be bang on 90 and the oil should be about the same, but I see a slight rise in the oil temp when driven at speed.
    #4
  6. Darknights
    Offline

    Darknights New Member

    Joined:
    Aug 14, 2013
    Messages:
    16
    Likes Received:
    0
    [Dec 24, 2013]
    Cool. I'll do the stat and the coolant at the same time as that's fairly crappy. Time to do a flush out and order some G13 me thinks ;-)
    #5
  7. B5NUT
    Offline

    B5NUT Well-Known Member VCDS Map User

    Joined:
    Feb 6, 2010
    Messages:
    2,281
    Likes Received:
    256
    [Dec 24, 2013]
    I flushed mine coolant a few times, filled it up with just water drove it around a couple of miles (before the temp started to rise) and dropped it, did that a few times then filled up with G13. I also replaced the expansion tank and cap when I refiled with G13.
    #6
  8. Darknights
    Offline

    Darknights New Member

    Joined:
    Aug 14, 2013
    Messages:
    16
    Likes Received:
    0
    [Dec 24, 2013]
    Cool. Just ordered expansion tank, thermostat, seal & G13. Hope I can find time to do it all ;-)
    #7
  9. Bradderz_1988
    Offline

    Bradderz_1988 Dont replace it, Upgrade it !!

    Joined:
    Aug 19, 2010
    Messages:
    3,227
    Likes Received:
    106
    [Dec 24, 2013]
    Best time to replace a stat snd get that cabin really toasty :) !!!
    #8
  10. Iceash
    Offline

    Iceash Member

    Joined:
    Mar 22, 2012
    Messages:
    391
    Likes Received:
    9
    [Dec 25, 2013]
    Water, 90 on dash, oil between 80 to 90 takes bout 10 miles to warm oil up to temp
    #9
  11. Darknights
    Offline

    Darknights New Member

    Joined:
    Aug 14, 2013
    Messages:
    16
    Likes Received:
    0
    [Dec 25, 2013]
    Hmmm, mines Deffo not reading right ;-)
    #10
  12. matt66604
    Offline

    matt66604 Member

    Joined:
    Dec 21, 2013
    Messages:
    55
    Likes Received:
    5
    [Dec 26, 2013]
    My coolant temp is around 90 and oil sits between 70-90 and when I drive normally I get around 30mpg and fuel saving mode is around 30-40.. On a good day...
    #11
  13. Broken Byzan
    Offline

    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

    Joined:
    Apr 26, 2004
    Messages:
    12,596
    Likes Received:
    273
    [Dec 26, 2013]
    90 / 90 here, it will affect MPG if the engine is running too cool, as will tired MAF's and 02 senders
    #12
  14. Topplumb1
    Offline

    Topplumb1 Member

    Joined:
    Jun 25, 2011
    Messages:
    80
    Likes Received:
    0
    [Dec 26, 2013]
    My coolant temp is 90 and oil temp is 80 - thats after both a new oil pump and coolant pump fitted new oil and the larger oil filter, takes a while for the oil temp to get up in winter, cam chain tensioner is also new, and power steering pump too !!
    #13
  15. Darknights
    Offline

    Darknights New Member

    Joined:
    Aug 14, 2013
    Messages:
    16
    Likes Received:
    0
    [Dec 27, 2013]
    Hmm, 30-40 mpg. Most ive managed is 24.8 so I'm thinking some is definitely not right. My corrado g60 used to get more MPG than my b5 :-( I love it but it's costing a lot to run. Gonna run my code reader over it 2mrw and see what it picks up
    #14
  16. Chriscooke
    Offline

    Chriscooke Clueless!

    Joined:
    Mar 2, 2012
    Messages:
    416
    Likes Received:
    18
    [Dec 27, 2013]
    Mine also sits bang on 90 for both oil and water. The best I've had for a decent trip (150 miles'ish) is 32mpg but have achieved 36mpg on a shorter trip once according to the display.

    Edit: Mine starts warming up and the water gauge moving after approx 3 miles.
    #15

Share This Page