Supra N_A Posted February 16, 2012 Share Posted February 16, 2012 (edited) Took the car for a blast and just set of for work there noticed a nice pattern of red coolant down the front of my bumper and a tiny puddle of coolant seems to be coming from the expansion bottle, any ideas on what is causing this? Rad cap need replacing ?? Thermostat need replaced?? Take it is getting to hot or something? All temps are fine not over heating etc etc. Edited February 16, 2012 by Supra N_A (see edit history) Quote Link to comment Share on other sites More sharing options...
Scott Posted February 16, 2012 Share Posted February 16, 2012 The most obvious thing to check is the coolant level. If it's too high in the expansion bottle then that will be why it's overflowing. Next thing to check would be the rad cap, if it isn't holding enough pressure it will let too much coolant past it, overflowing the bottle. If your temps are OK and it heats up quite quickly from cold then that would suggest your thermostat is fine. Money would be on the rad cap though. The first thing to do is wipe off the coolant Quote Link to comment Share on other sites More sharing options...
Scooter Posted February 16, 2012 Share Posted February 16, 2012 Could be the rad cap, but was the expansion tank just over full? I'd see what it's like once its completely cool again, if there is still plenty of coolant in the expansion bottle i'd not worry too much at this stage. If it's low i'd (making 100% sure its cool) take the rad cap off and look to see if it looks a bit rough. Quote Link to comment Share on other sites More sharing options...
Westy Posted February 16, 2012 Share Posted February 16, 2012 Are you still running the oem overflow bottle or have you switched to a smaller one!? When I switched to my aftermarket one I think I had around 500ml of coolant to spare. Could ofcourse just be the rad cap! Quote Link to comment Share on other sites More sharing options...
Supra N_A Posted February 16, 2012 Author Share Posted February 16, 2012 It seems to be flowing back up to normal the expansion tank when it's actually leaked. It's the oem bottle mate.... It gets warm pretty quick inside the cabin very hot by 10 mins!! Tried eBay there but none any one kno were I could purchase a aftermarket rad cap from like Hks etc?? Quote Link to comment Share on other sites More sharing options...
Scott Posted February 16, 2012 Share Posted February 16, 2012 You're better off with stock. The normal aftermarket one of choice is TRD. Quote Link to comment Share on other sites More sharing options...
Supra N_A Posted February 16, 2012 Author Share Posted February 16, 2012 Were can I buy the trd cap you suggested? Quote Link to comment Share on other sites More sharing options...
Westy Posted February 16, 2012 Share Posted February 16, 2012 I have the HKS one and keep the stocker in my glove box just incase! eBay...sumo power. Quote Link to comment Share on other sites More sharing options...
Westy Posted February 16, 2012 Share Posted February 16, 2012 http://www.ebay.co.uk/itm/HKS-LIMITED-EDITION-RADIATOR-CAP-TOYOTA-SUPRA-JZA80-/280817939809?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item41620db561 Quote Link to comment Share on other sites More sharing options...
Westy Posted February 16, 2012 Share Posted February 16, 2012 Just checked re the TRD also, but be careful as eBay is loaded with fakes... Quote Link to comment Share on other sites More sharing options...
dan294 Posted February 16, 2012 Share Posted February 16, 2012 Just checked re the TRD also, but be careful as eBay is loaded with fakes... Second that, the previous owner of mine had a Suspect TRD Rad cap, and it was rubbish! Lasted about 6 months, so I went back to stock. They aren't dear from Toyota Quote Link to comment Share on other sites More sharing options...
Dnk Posted February 16, 2012 Share Posted February 16, 2012 Doesn't the TRD have a higher pressure rating than the o/e ? I'd personally stick with a stock cap. Quote Link to comment Share on other sites More sharing options...
Supra N_A Posted February 16, 2012 Author Share Posted February 16, 2012 http://www.ebay.co.uk/itm/HKS-LIMITED-EDITION-RADIATOR-CAP-TOYOTA-SUPRA-JZA80-/280817939809?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item41620db561 Cheers mate will get that as it's genuine and sumo power are good dealers! Is yours still ok done the job? Quote Link to comment Share on other sites More sharing options...
James Posted February 16, 2012 Share Posted February 16, 2012 TRD cap is 1.3, stock is 1.1 if I remember correctly. For the difference in price between the likes of eBay and then a reputable place such as Whifbitz, I'd just get one from Paul. (well, I did ). Quote Link to comment Share on other sites More sharing options...
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