Why T Posted May 5, 2013 Share Posted May 5, 2013 (edited) Hey guys, Just drove my new supra all the way to Germany, (hannover). She overheated 5 times. I.E steam from the overflow cap. Both pipes are warm, No heating or a/c in the car. all i kept doing was refilling with water as that's all i had. The odd thing is that if i drove at under 3000rpm it wouldn't steam up but if i went over it just once it would turn into a steam train. The needle only went up once when i first noticed it but after that i always noticed it getting rid of all the coolant/water before it overheated. Checked all the fuses. HELP ME PLEASE!!!!!!! Edited May 6, 2013 by Tyson Please use a more accurate title otherwise people will just not bother looking (see edit history) Quote Link to comment Share on other sites More sharing options...
Mace Posted May 5, 2013 Share Posted May 5, 2013 (edited) No expert but is water pump ok? Had a problem that looked like head gasket once on my uk TT was quite dramatic, but turned out was just the rad cap. Edited May 5, 2013 by Mace (see edit history) Quote Link to comment Share on other sites More sharing options...
absz Posted May 5, 2013 Share Posted May 5, 2013 :)Sounds like rad cap Quote Link to comment Share on other sites More sharing options...
Homer Posted May 5, 2013 Share Posted May 5, 2013 Another vote here for the rad cap, had one go on mine a long time ago and it was the same symptoms. Is it a stock one? The little plastic seal does have a habit of going brittle and breaking up, should be an easy spot Quote Link to comment Share on other sites More sharing options...
Havard Posted May 5, 2013 Share Posted May 5, 2013 Rad cap defo. £18 from Toyota..!! Quote Link to comment Share on other sites More sharing options...
Benjy Posted May 5, 2013 Share Posted May 5, 2013 Checked all the fuses. Fantastic. Quote Link to comment Share on other sites More sharing options...
Why T Posted May 6, 2013 Author Share Posted May 6, 2013 Fantastic. Hey not all of us are experts yea. I didnt know so I did what I knew. - - - Updated - - - Another vote here for the rad cap, had one go on mine a long time ago and it was the same symptoms. Is it a stock one? The little plastic seal does have a habit of going brittle and breaking up, should be an easy spot Yea origional ad cap. Single supra Quote Link to comment Share on other sites More sharing options...
Westy Posted May 6, 2013 Share Posted May 6, 2013 Replace the rad cap as stated and go from there. Quote Link to comment Share on other sites More sharing options...
mellonman Posted May 6, 2013 Share Posted May 6, 2013 Could be a leaking pipe, maybe turbo water feed or where they would be blocked off for the single turbo , but if you realy dont know what you are doing take it to a garrage once you have tried the rad cap Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted May 6, 2013 Share Posted May 6, 2013 Why didnt you just stop the first time it overheated? Hope you havent done any major engine damage. But rad cap or water pump. Quote Link to comment Share on other sites More sharing options...
Why T Posted May 6, 2013 Author Share Posted May 6, 2013 I did stop every time but it only overheated once. Getting the new rad cap tommorow as well as a aircon top up. Fingers crossed. Quote Link to comment Share on other sites More sharing options...
Why T Posted May 7, 2013 Author Share Posted May 7, 2013 Right rad cap replaced. seen how bad the old was so looks like it was that. still need to go for a blast to find out but anyway. whats for all your help. Quote Link to comment Share on other sites More sharing options...
Why T Posted May 8, 2013 Author Share Posted May 8, 2013 Rad cap stopped the steam however still overheating. Both rad pipes are hot. Have to have the heater on to keep it cool. Any ideas? Quote Link to comment Share on other sites More sharing options...
scott87 Posted May 8, 2013 Share Posted May 8, 2013 I would empty the system out and refill it. If you've been chucking water in everytime it went low and the cap was faulty you could have drawn air into the system pretty easily... Quote Link to comment Share on other sites More sharing options...
Why T Posted May 8, 2013 Author Share Posted May 8, 2013 Ok yea ill try that. Quote Link to comment Share on other sites More sharing options...
mellonman Posted May 9, 2013 Share Posted May 9, 2013 hope that it is a simple air lock but doubt it, is it still keeping all its water ? water pump was mentioned so may not be flowing correctly? check your oil dip stick also just to see what the oil is like (milky = head gasket) Quote Link to comment Share on other sites More sharing options...
Why T Posted May 9, 2013 Author Share Posted May 9, 2013 The oil is fine. so glad its not that. I gave the top rad pipe a squeeze al over last night and found that it might be partially blocked so gonna take it off tonight and give it a clean out. Gonna bleed it next week aswell. Quote Link to comment Share on other sites More sharing options...
mellonman Posted May 9, 2013 Share Posted May 9, 2013 you sure that it was not just preasurised like normal Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted May 9, 2013 Share Posted May 9, 2013 Have you checked the std viscous fan is working correctly when the RPM is up, as if faulty it can cause overheat, other than that i would take a look at the water pump. Quote Link to comment Share on other sites More sharing options...
Dnk Posted May 9, 2013 Share Posted May 9, 2013 (edited) I would empty the system out and refill it. If you've been chucking water in everytime it went low and the cap was faulty you could have drawn air into the system pretty easily... The system self bleeds so pointless emptying it. Just top up the rad to the neck and also fill the expansion tank to approx half way. As the coolant heats up its forced out into the expansion tank and is then drawn back in as it cools. Can't see it being a partially blocked top rad pipe, have you checked the pipe from the rad to the expansion tank isn't blocked Did you fit an OE rad cap from Toyota ? Edited May 9, 2013 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
Why T Posted May 9, 2013 Author Share Posted May 9, 2013 you sure that it was not just preasurised like normal No as it was only one part of it that felt blocked - - - Updated - - - Have you checked the std viscous fan is working correctly when the RPM is up, as if faulty it can cause overheat, other than that i would take a look at the water pump. Seams like it works fine. Not damaged in anyway. Quote Link to comment Share on other sites More sharing options...
Why T Posted May 9, 2013 Author Share Posted May 9, 2013 Have you checked the std viscous fan is working correctly when the RPM is up, as if faulty it can cause overheat, other than that i would take a look at the water pump. Seams like it works fine. Not damaged in anyway. Quote Link to comment Share on other sites More sharing options...
Why T Posted May 9, 2013 Author Share Posted May 9, 2013 The system self bleeds so pointless emptying it. Just top up the rad to the neck and also fill the expansion tank to approx half way. As the coolant heats up its forced out into the expansion tank and is then drawn back in as it cools. Can't see it being a partially blocked top rad pipe, have you checked the pipe from the rad to the expansion tank isn't blocked Did you fit an OE rad cap from Toyota ? I did fit one. Brand new from toyota. Ill look at all the pipes later to se if its that. Quote Link to comment Share on other sites More sharing options...
Dnk Posted May 9, 2013 Share Posted May 9, 2013 I did fit one. Brand new from toyota. Ill look at all the pipes later to se if its that. Have you checked there is coolant in the expansion tank, when cold it should be approx half full Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted May 9, 2013 Share Posted May 9, 2013 Seams like it works fine. Not damaged in anyway. Check to see how much resistance there is to turning when hot and cold, with the engine off obviously, it can look like its running fine, but when the engine is hot its not actually turning fast enough to cool adequately. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.