andygal 0 Posted January 9, 2008 Hey my VR6 1994 is a little lumpy when cold. After scanning it woth vagcom, its reading a short to earth on the blue temp sensor. Having looked at the sensor, the brown and green wire has been spliced into and a feed taken to the -ve on the battery. I have no idea why this has been done tho. Anyone got any ideas whats happened or how to fix it?? Cheers, Andy Quote Share this post Link to post Share on other sites
flusted 0 Posted January 10, 2008 I expect 1 side is sposed to be earthed, other side will go to ecu. if the switch is knackered it might be pulling fully to earth all the time? Quote Share this post Link to post Share on other sites
AlgarveVR6 0 Posted January 10, 2008 Hey Andy. Blue temp sensor is 10 bucks and about 15 mins to do. for that price I would change it anyway and have done. The car will run like nails if the BTS is knackered, as the ECU reads this constantly, as you know. Put the wiring right, and go from there. Make sure the coolant is not too hot when you pull it out, and if your quick you won't need to top the coolant up too much. Good Luck Dic Quote Share this post Link to post Share on other sites
andygal 0 Posted January 10, 2008 right new sensor in and the earth wire taken off and it idle'd at 2000RPM. Attached the earth wire and it was perfect.....for 5minutes. As soon as i took it out a run it ended up idling at 1600RPM again!!! Any ideas?? Cheers, Andy Quote Share this post Link to post Share on other sites
AlgarveVR6 0 Posted January 11, 2008 Andy, do you have the opportunity to Vagcom it. I wish i had done mine when i first had problems. Would have saved me loads of grief. I bought a lead for 20 bucks and had the shareware from ross tech. any unknown codes I put in here as a search and sorted everything. Worth every penny Dic Or borrow one..... Quote Share this post Link to post Share on other sites
