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

Engine temp drops while driving.

gedi Jul 12, 2012

  1. gedi

    gedi Member

    Hi I noticed funny thing on my car(its 98 1.8 SE) while driving at about 50-70 mph engine temp gauge drops to about 70 but when i stop in few mins it goes back to 90 and will drop again if start driving for a few miles at same speed. Thermostat was changed a while ago cause wasnt closing. what else could it be? Faulty thermostat temp sensor or viscous fan? Thanx for any help.
  2. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    Your new thermostat is ****, i've had the same issue fitting cheap ones.

    Fit a new genuine Audi stat and the problem will go away.
  3. gedi

    gedi Member

    thats probably true cause i got it quite cheap as even suprised by the price. Need to order new one. thanx aragorn
  4. Nessy

    Nessy VW + Audi mad

    Yes, its the thermostat.
    Get a Genuine Audi one (they are made by Behr IIRC), but don't expect even that to last forever.
    I replaced mine in February , only 3 years/ just over 30k miles after the last one.
    Both times it was a Genuine part, was surprised how short a lifespan the last one had.....

Share This Page