ludo Posted October 19, 2005 Report Share Posted October 19, 2005 (edited) In the GTI it normally sits rock solid at 90 degrees.Lately I've noticed that every so often it plummets to zero, stays there for a bit, then returns to normal.Any ideas? style="vertical-align:middle" emoid=":confused:" border="0" alt="confused.gif" /> Cheers Edited January 30, 2006 by ludo Quote Link to comment Share on other sites More sharing options...
Gavs_arosa16v Posted October 19, 2005 Report Share Posted October 19, 2005 Temp sensor busted. Just replaced mine, common fault. Its in the coolant system. If you are going to replace it, you will need to know the colour and pin arrangement. Quote Link to comment Share on other sites More sharing options...
lupogtiboy Posted October 19, 2005 Report Share Posted October 19, 2005 coolant temp gauge part no shud be 059 919 501 a colour is green, cost around £25you'll also need a seal, part no n 903 168 02, about 90pmaybe a bottle of coolant too, g 012 a8 fm1, around 5.89 Quote Link to comment Share on other sites More sharing options...
db Posted October 19, 2005 Report Share Posted October 19, 2005 Had mine fixed the other day aswell exact same problem, it's the temp sender, it just sat telling me the coolant was cold and never warmed up, had it replaced and everything is hunkydory again. Quote Link to comment Share on other sites More sharing options...
ludo Posted October 20, 2005 Author Report Share Posted October 20, 2005 (edited) Thanks y'all style="vertical-align:middle" emoid=":thumbsup:" border="0" alt="thumbsup.gif" />Is it a job I can DIY, with tools and things like a handy Dad?Or do I need a mechanical engineering degree, ramp, pit crew etc? Edited October 20, 2005 by ludo Quote Link to comment Share on other sites More sharing options...
lupogtiboy Posted October 20, 2005 Report Share Posted October 20, 2005 make sure the engine is cold when you do it or you'll burn yourself! tha sensor is held in with a slide-out clip, on the gearbox side of the engine, in a water outlet, or flange as vw call them! shud have a 4 pin connector on it, pull this off, pull the clip out, grab the top of the sensor, and it shud come out! then reverse the procedure to refit new sensor, remebering the seal! Quote Link to comment Share on other sites More sharing options...
Gavs_arosa16v Posted October 20, 2005 Report Share Posted October 20, 2005 Just a warning - The engine takes ages to cool right down. I managed to clean the whole of my car, including fiddley wheels and the water was still very hot.Tha hardest bit is unclipping the cable. Then whip it out with the seal and whip the new one back in, while the water is running out. Takes seconds if you quick. Top up coolant. Check level of coolant next day.That how I did mine and its been fine since. Quote Link to comment Share on other sites More sharing options...
ludo Posted October 20, 2005 Author Report Share Posted October 20, 2005 (edited) You guys are grand.thank you both for your advice style="vertical-align:middle" emoid=":cheers:" border="0" alt="cheers.gif" />BTW is this do-able from under the bonnet, or is it accessed from underneath? Edited October 20, 2005 by ludo Quote Link to comment Share on other sites More sharing options...
lupogtiboy Posted October 20, 2005 Report Share Posted October 20, 2005 under the bonnet mate! Quote Link to comment Share on other sites More sharing options...
ludo Posted October 25, 2005 Author Report Share Posted October 25, 2005 All sorted now . Thanks for your help! Quote Link to comment Share on other sites More sharing options...
surefunk Posted January 28, 2006 Report Share Posted January 28, 2006 Hi, I've got the same problem. Where abouts in the coolant system is the sensor?? Can someone be a bit more specific about it's location. Quote Link to comment Share on other sites More sharing options...
ludo Posted January 30, 2006 Author Report Share Posted January 30, 2006 Hi mate it's on the front right hand side of the block Quote Link to comment Share on other sites More sharing options...
Dan_F Posted July 22, 2006 Report Share Posted July 22, 2006 Sorry to bring an old thread up, but i'm hoping somone can help me. I've just replaced my coolant temp sensor and after trying for at least 2 hours to get the clip on connector off (was it just me who found it was in an incredibly difficult to unclip place?), just took the whole thing off by undoing the retaining clip and pulling the sensor out. I accidently dropped the replacement sensor and ended up with all the coolant coming out onto the bottom of the engine area and the driveway style="vertical-align:middle" emoid=":rolleyes:" border="0" alt="rolleyes.gif" /> anyway I replaced the sensor and used a hose to flush the remaining coolant from the engine bay. Now i'm pretty sure just hosing off the effected engine area (transmission casing area) with water and leaving it to dry off completely overnight will be absolutely fine, but can anyone who has had this happen to them confirm this ? (I'm a bit paranoid about the lupo) Secondly when refilling the coolant resevoir is there anything I should do (apart from pouring the fluid in slowly) to avoid creating airlocks in the system ?Sorry for the long post, any help would be greatly appreciated style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> !Dan Quote Link to comment Share on other sites More sharing options...
ludo Posted July 29, 2006 Author Report Share Posted July 29, 2006 Hello MateYou shouldn't have any problems after doing what you've mentioned here. It was indeed a bitch to get that connector off. I seem to remember going through the same rigmarole but as long as you've refilled your system correctly yuou should be OK. No worries Quote Link to comment Share on other sites More sharing options...
Gavs_arosa16v Posted July 29, 2006 Report Share Posted July 29, 2006 I did the same and didnt even wash it off. You should be ok, unless you drink some. Quote Link to comment Share on other sites More sharing options...
Dan_F Posted July 29, 2006 Report Share Posted July 29, 2006 hehe..thanks for the replies, its all done now and everything is back to normal, I was just being a bit paranoid I think ! Quote Link to comment Share on other sites More sharing options...
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