Gravy Posted November 6, 2014 Report Share Posted November 6, 2014 I have a feeling that my thermostat is on the way out/faulty. The temp gauge is being fairly hit and miss, sometimes at 12 o'clock sometimes more 11 on the same journey. My local mechanic is a good guy I trust but he isnt a BMW/German specialist. Cheers Link to comment Share on other sites More sharing options...
marc l Posted November 6, 2014 Report Share Posted November 6, 2014 I'd just change it. It can only be the thermostat really. Link to comment Share on other sites More sharing options...
Mr Xen Posted November 6, 2014 Report Share Posted November 6, 2014 (edited) Look in the top right forum search bar you will find lots of info on this...... Take your car on a 30 min ish drive and check the temperature reading on the secret menu If I remember right the temperature should show 78 deg c constantly if it's below this it means the thermostat is goosed and you need to change it Obviously run the car up first to get it near temp then check Hope this helps Edited November 6, 2014 by Mr Xen Gravy 1 Link to comment Share on other sites More sharing options...
rasa Posted November 6, 2014 Report Share Posted November 6, 2014 im sure its supposed to be 88-92 degree CharlE46, Mr Xen, DJ Syxx and 1 other 4 Link to comment Share on other sites More sharing options...
mjn Posted November 6, 2014 Report Share Posted November 6, 2014 Won't show on a diagnostic check, and temp should be around 88-92 degrees. Link to comment Share on other sites More sharing options...
TriggerFish Posted November 6, 2014 Report Share Posted November 6, 2014 As above When mine failed it sat at 77c (but was still fine on the dash, although I've now changed the dash so it's only upright between 85-95) Link to comment Share on other sites More sharing options...
chunky899 Posted November 6, 2014 Report Share Posted November 6, 2014 Mines goosed. 77° constantly when "warm" and mpg has been affected too! This morning it didn't even reach the middle of the gauge on a 17 mile drive! ....Phone..... Link to comment Share on other sites More sharing options...
the_driller Posted November 6, 2014 Report Share Posted November 6, 2014 You dont need to be a bmw specialist to change a thermostat lol. I would do the water pump too unless it's been done recently.. Sent from my GT-I9500 using Tapatalk 2 Link to comment Share on other sites More sharing options...
rasa Posted November 6, 2014 Report Share Posted November 6, 2014 Mines goosed. 77° constantly when "warm" and mpg has been affected too! This morning it didn't even reach the middle of the gauge on a 17 mile drive! ....Phone..... mine reaches middle of temp gauge but when i have tried engine temp while driving it hasnt gotten above 85d, prob only have the car another year as starting to get itchy for something else already,trouble is not nmuch out there with the same power ,mpg looks and drive for about 6k max Link to comment Share on other sites More sharing options...
bachu Posted November 6, 2014 Report Share Posted November 6, 2014 I changed mine when I bought the car 3 years ago, I kept an eye on it but never got past 85, was informed to buy a genuine bmw thermo and it reaches temp quicker and to the correct temp. I would try genuine part I bought mine from costwold bmw, I got mine for £55 delivered. just say your part of this forum and bmwland, you need to speak to ed. great guy good luck :-) Link to comment Share on other sites More sharing options...
