Ando81 2,949 Posted November 14, 2013 Hi gang, as the title suggests can someone tell me the most obvious place to look to stop my crossy from running warm. It usually sits at halfway on the temp gauge but recently I have noticed it goes more towards 3/4 on the gauge whenever I drive at 105-110km/h. In 20 degree weather around town it only sits on roughly 1/4 on the gauge but as soon as I have constant revs on it up the freeway it seems to creep up. Has had new radiator 12 months ago, it's manual, bog standard motor, running lpg, new thermostat 12 months ago, clutch fan seems to be working. Was thinking it may be the water pump. No sign of any water leaks or loss of coolant. Cheers for any help Share this post Link to post Share on other sites
Clevo120Y 815 Posted November 14, 2013 Check the radiator hoses and see if they are really soft, they can collapse with high revs and restrict the flow of coolant. Other than that you may have to give the cooling system a good flush out as you symptoms seem to suggest a coolant flow restriction or airflow restriction, as the radiator is new it shouldn't be that but clean the system anyway. Share this post Link to post Share on other sites
Thom 6,651 Posted November 14, 2013 Does it have aircon? The condenser may be blocked Share this post Link to post Share on other sites
Ando81 2,949 Posted November 14, 2013 Cheers mate, will do. That reminds me of a mates commodore, he used to put armour all spray on his heater hoses and all his plastics under the bonnet for a showroom look but realised that after a while it had softened the rubber and whenever he gave it big revs hoses would suck in and restrict flow. Share this post Link to post Share on other sites
Ando81 2,949 Posted November 14, 2013 Does it have aircon? The condenser may be blocked Yeah it has air con mate, would compressed air blow the crap out from between the fins to clean the condenser? Or would water be better to flush it through? Share this post Link to post Share on other sites
Thom 6,651 Posted November 14, 2013 Best way to clean it is pull the radiator first so you don't fill it with junk, you don't want much pressure when you blow it out as it may bend the fins 1 Ando81 reacted to this Share this post Link to post Share on other sites
Ando81 2,949 Posted November 25, 2013 Great suggestion thom, I decided to pull the radiator out and flushed water through the fins of the condenser which was full of bugs and crap. The radiator wasn't as bad but still quite dirty also. Changed the water pump and both radiator hoses and it seemed to be cooler at highway speed this afternoon. Share this post Link to post Share on other sites
Mr Polson 10,214 Posted November 25, 2013 Bled the cooling system? Air pockets in there can cause them to run warm. 1 XTREME KARTS XF reacted to this Share this post Link to post Share on other sites
bear351c 10,270 Posted November 25, 2013 Bottom hoses used to run a spring in them, to stop them collapsing. They still do that?? Also, your ignition timing can make the engine run hot. Stick a timing light on her as well. Share this post Link to post Share on other sites
Ando81 2,949 Posted November 25, 2013 Bled the cooling system? Air pockets in there can cause them to run warm. Yeah mate, my high school automotive teacher was very particular about bleeding the system 1 Mr Polson reacted to this Share this post Link to post Share on other sites
Ando81 2,949 Posted November 25, 2013 Bottom hoses used to run a spring in them, to stop them collapsing. They still do that?? Also, your ignition timing can make the engine run hot. Stick a timing light on her as well. The old one had a rusted, rooted one in it but the new gates branded one from repco didn't have a spring. Share this post Link to post Share on other sites
Mr Polson 10,214 Posted November 25, 2013 Yeah mate, my high school automotive teacher was very particular about bleeding the system 1 XTREME KARTS XF reacted to this Share this post Link to post Share on other sites
Ando81 2,949 Posted November 26, 2013 Yeah, too late once you hear the water crackling inside the head once it hits a hot air pocket! Share this post Link to post Share on other sites
bear351c 10,270 Posted November 26, 2013 The old one had a rusted, rooted one in it but the new gates branded one from repco didn't have a spring. Yeah, I'm pretty sure the new hoses these days have a woven mesh inside the rubber, for strength. But, if you get P/S fluid or oil on it, it will go soft. When its hot, pop the bonnet, and give it a good rev, you'll see the hose collapse. Share this post Link to post Share on other sites
Ando81 2,949 Posted November 26, 2013 The old one had a rusted, rooted one in it but the new gates branded one from repco didn't have a spring. Yeah, I'm pretty sure the new hoses these days have a woven mesh inside the rubber, for strength. But, if you get P/S fluid or oil on it, it will go soft. When its hot, pop the bonnet, and give it a good rev, you'll see the hose collapse. Yeah the new one had the woven stuff in it, seems to be ok but I better get onto the leaky old rocker cover gasket just to make sure the new hose doesn't get oil onto it Share this post Link to post Share on other sites
