Overheating.... ready to blow it up.....

[angrypenguin182]

might be an obvious statement but it is commonly overlooked, did you put the thermostat in the right way? when i changed mine a while my friend put it in wrong, and thinkin it was the s***ty advanced one, i went to Nissan to get mine, when i took it out i noticed my friend made me spend 20 bucks more than i needed to

[240s_are_the_best]

might be an obvious statement but it is commonly overlooked, did you put the thermostat in the right way? when i changed mine a while my friend put it in wrong, and thinkin it was the s***ty advanced one, i went to Nissan to get mine, when i took it out i noticed my friend made me spend 20 bucks more than i needed to

yes, as i stated eariler. It is in the correct way. i dont think it is actually overheating because the gauge falls quicker than it would take to cool off.

when i release the pressue on the rad cap i get A LOT of steam and no water... and when i say alot i mean ALOT!! i only have straight water in it right now and i have put like 3 gallons of tap water in it in the past two days. it is pushing it all back to the over flow. i can drain the over flow and drive it and when i stop it will be full again. I think it has quite a bit of air in it and when it heats up it is turning the water to steam and making the gauge read warmer than it actually is. so there for i dont think it is actually overheating now that i got the stat to open up.

I will put antifreeze in it tonight and see if that helps. will post back later on tonight.

[biggie]

Still sounds like there was an air bubble.

Or you've blown the HG just enough for it to pressurize the coolant system just enough when at higher RPMs to over heat it.

[amolao]

air in the system.....definetely.

[SirSilvia]

In my exp, it's always been a total B to get all the air out of the system.

I've-

Jacked the car up in the front, squeezing the rad hoses

Put a long funnel in the fill hole on rad, put fluid, rev engine/squeeze hoses

Between those 2 things i've gotten all the air out, but it takes time, i've spent over an hour doing this..

Good luck

I don't know what you guys are having problems with air. I don't do much bleeding and I have never had an overheating problem. even with the block eptied of coolant. I put the stat back in, drain the rad, and fill it up with fresh coolant. I start the car and add more coolant while it's running. I figure, if the rad has enough fluid in it, it will suck enough into the engine forcing the bubbles out the other side and the bubbles release in the rad cap when i have it open (cold of course)

[xX RB Xx]

ill buy it. how much?

[SirSilvia]

when i changed the pump and thermostat i flushed the block, radiator and everything... i just cant seem to figure it out. i took the thermostat out and it works fine. but i am not going to drive it with out a thermostat because it is there for a reason, and i am not burning up my KA before i turbo it I am almost 105% sure it is not the headgasket because there is no water in the oil, oil in the water, bubbles in the radiator, or white smoke out of the exhaust. I went and worked on it for a while until i burnt me hand with hot antifreeze... and got i think all of the air out. i burped the upper radiator hose. took out the ecu temp sensor and bleed it there. loosened the thermostat housing bolts and got alot of air out there. now when i do any of that i only get coolant. it does perfect when it is idling but when i drive it is when the problems begin. i am thinking it is still circulating because the heater is still hot, but if i raise the rpms above 4000 the temp starts to rise. when i get back home the upper radiator hose has so much pressure built up on it that i cant squeeze it and the coolant is boiling. but when i grab the lower radiator hose it is cold. PLEASE HELP!! i have tried everything i can think of.

it sounds like either there's massive blockage since there's pressure in the rad hose and the temp varies greatly from the bottom hose. There's obviously no circulation. As much as it might suck to do. see if you can swap out the rad.

[SirSilvia]

oh and if there was enough pressure the overflow tank would ...overflow. if you're using a generic rad cap, it might not be releasing the pressure as well (stock nissan 240sx caps are spring loaded allowing pressure to release.)

But i still say blocked Rad

[240s_are_the_best]

PROBLEM FIXED!!!! it was a combination of 2 things.. it still had air in it and the face that i was using straight tap water. it was moving through the block and turning into steam building up pressure. that is why i kept having to put sooo much water in. i put in a total of over 4 gallons lol. the temperature here has been droping to below freezing so i drained the radiator and filled it with straight 100% antifreeze. i did not use 50/50 because i still had alot of tap water in the block so i figured it would equal out. drove it and wahhlahh!! no more heating up Thank goodness. Now to do it all again when i put in the mishimoto radiator this weekend. will post a link to a pic. I will be going turbo in about 3 weeks THANKS AGAIN FOR ALL THE HELP!!!

[240s_are_the_best]

ill buy it. how much?

buy what?? my car?? she is really not for sale now that she is fixed i figured that it may have been mad at me for using mid grade gas instead of 93 octane. when i used 93 and antifreeze instead of tap water wahhlahh she is not mad at me anymore

[xX RB Xx]

^ my car hates me right now. I think I might have to start cheating on her.

[Kataki_]

both my cars feel the same way...my s14,well lets just say if looks could kill she would have by now..and the 13 feels like an old hoe so what can you do

[240s_are_the_best]

okay. maybe i spoke too soon.... she is still heating up. it just doesnt do it as quickly. i get my radiator back tomorrow so I am just going to try and work it out then. it is defiantly air though. Thanks again for all the help!!!!

[240s_are_the_best]

might be an obvious statement but it is commonly overlooked, did you put the thermostat in the right way? when i changed mine a while my friend put it in wrong, and thinkin it was the s***ty advanced one, i went to Nissan to get mine, when i took it out i noticed my friend made me spend 20 bucks more than i needed to

yes, as i stated eariler. It is in the correct way. i dont think it is actually overheating because the gauge falls quicker than it would take to cool off.

when i release the pressue on the rad cap i get A LOT of steam and no water... and when i say alot i mean ALOT!! i only have straight water in it right now and i have put like 3 gallons of tap water in it in the past two days. it is pushing it all back to the over flow. i can drain the over flow and drive it and when i stop it will be full again. I think it has quite a bit of air in it and when it heats up it is turning the water to steam and making the gauge read warmer than it actually is. so there for i dont think it is actually overheating now that i got the stat to open up.

I will put antifreeze in it tonight and see if that helps. will post back later on tonight.

[jeff420]

hate to say it but it sounds like you have a blown headgasket. i have run straight water in my ka without any issues. when my headgasket went on my first motor it kept pushing the coolant into the overflow. i bled the system and would let the car idle for 45 minutes and it wouldnt overheat. but soon as i start driving it it would start heating up. had no smoking or water in my oil, just a small spot where exhaust gasses would seep through.

[240s_are_the_best]

okay, its been a while but it is offically fixed. i installed my mishimoto radiator and fixed the ac fan so it finaly works and used ~30% anti freeze 1 bottle of Redline Water Wetter and toped it off with distilled water and wahhlahhh no more heating up or excessive pressure build up. oh and i fixed the gauge sender lol