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alright well my car overheated on my brother and he blew a rad hose. i've since repaced that hose, installed a new thermostat, refilled and bled the cooliant system (thank you Nx$paniard for helping with the location on that valve). I have no leaks so i know its a flow issue. What i don't understand is that i can drive at leat 40 min on the freeway before the temp even starts to go over the norm but once it starts it goes fast? I don't want to pull the water pump unless i have to. Any one got any ideas? it's a ga16de
not really sure about a solution, but from what your saying it doesnt sound like your water pump. In my experience, when a water pump goes out they usually just seize up and stop working all together. could someone else chime in here? i know that sometimes when head gaskets go out, the car will run fine for a while but then get really hot really fast...could this be a similar case? have you checked for coolant in your oil, or does your oil look kinda like chocolate milk? I figure if it was hot enough to blow off hoses, it may have been hot enough to blow your head gasket.
I would maybe try replacing your coolant temp sensor(the one for the ecu). Maybe its not kicking your fan(s) on. Either that or your fan replay. Just a guess.
I'm not sure about the problem either, but it sounds like the problem my car had. I could not find any leaks or anything anywhere and my car would run fine while on the highway and then as soon as I pulled off it would overheat extremely quickly. To fix the problem I just hardwired my radiator fan to a switch inside my car so I can turn the fan on and off manually. As long as I turn the fan on while stopped I haven't had the problem since. Good luck
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Usually this type of problem sounds like a flow issue. I would guess your radiator is junk, it may have some clogged tubes.
You really shouldnt need to run the fan if you are moving at a steady rate of speed.
Do you have a/c? The reason i ask is with how little airflow our radiators get the a/c condensor in front of the radiator tends to gather alot of crap over may years of driving, and block alot of airflow to the radiator. I would try pressure washing this out and see if it helps, you would be suprised how many leaves, bugs grime etc that will come off of it.
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93 electric blue nx2000 with lots o mods.
91 g20 5spd dd soon to have t25 set up
99 maxima se 5spd: I/H/E
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i dealt with this issue before, but on an SR. and it was a bad ground. try turning on accessories when it starts doing it. kick the heat onto 4, turn your headlights on, wipers, and if that makes the guage even move a tick.. youve got a bad engine ground. check by the connector that goes to the block... copper corrosion is greenish/blue.
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another 92 NX, running a partout... let me know what you need.
Usually this type of problem sounds like a flow issue. I would guess your radiator is junk, it may have some clogged tubes.
You really shouldnt need to run the fan if you are moving at a steady rate of speed.
Do you have a/c? The reason i ask is with how little airflow our radiators get the a/c condensor in front of the radiator tends to gather alot of crap over may years of driving, and block alot of airflow to the radiator. I would try pressure washing this out and see if it helps, you would be suprised how many leaves, bugs grime etc that will come off of it.
I would tend to agree on this if it slowly started to happen. Since it happened after it over heated, that makes me think other wise.
Now when you have the car idling does your fan kick on? I think it should kick on around 205-212 degrees. Let you car idle and make sure your fan kicks on.
Also if you have to hardwire a fan switch you fan should be kicking on. Because if your car starts to over heat its is above the temp the fan should kick on, so they should be on. Your car could have overheated in the first place due to the fan not working.
alright well thanks for all the responses. I 've had the hardwired fan for some time now but i never use it on the freeway and have never had a problem till now. As for the a/c i ripped it out a long time ago since it didn't work anyway. I have been looking for water in my oil and vice versa since it happened and have not seen anything out of the norm yet. I am starting to think that it just may be a sensor that's making my gauge act funny. plus i'm going to get my radiator flushed just in case. and i'll check the engine ground. p.s. i hate my digital dash (very very inaccurate).
it shouldnt overheat on the highway regardless of the fans working or not though. its not a boosted motor, so it doesnt see high heat in nominal use. its very easy to make new ground cable either way with a nice piece of 0 gauge high strand.
My 2 cents............ The thing that could be making your guage move like that is the temp sender. Thats the little skinny sensor looking thing next to the coolant temp sensor on the intake mani. Also, did you bleed the coolant system when you replaced some stuff? That could also cause this to happen.
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i do believe that it goes into the overflow tank but i have no cap on that overflow tank (lost it). I've never seen it go off the gauge. i think i'm going to get a new overflow and rad cap (looks pretty worn). I did bleed the system when i refilled it after it blew the hose and all the fluid but i didn't turn the heater on full balst so i was thinking that there might by a air pocket in the system. would that maybe cause the proplem.
Very simple and I'm sure you've checked it, but pull the rad and thoroughly clean it. At my last track day with my GA I had my first overheating issues ever in four plus years of track use. Checked all kinds of stuff and it ended up being a clogged rad from road debris. If that's not it, then flush it thoroughly to ensure you've got good flow as already mentioned. Sometimes it's the simple stuff that stops us - and something had to cause your car to overheat on your brother!
BUMP!! i know this is an old thread but i need HELP ASAP
im supposed to be driving 2 states away for thanksgiving to be with my family.. my car was fine and i was ready for the drive.. but on the day im leaving.. during normal driving. to get gas and food..
- my coolant resovior OVERFLOWED and leaked on the engine. (smokingg)
- my fans turn on, and my inside heat works ( so i figure the thermistat is openingn)
- and i never noticed a diff in the temp sensor.
- what could cause this sudden overflow of coolant
_ just the coolant expanding?
i really need to get this show on the road.. im waiting on a reply.. please anyone help! thanks!
1. CHECK THE RADIATOR AND CONDITION OF FINS.
2. FLUSH RADIATOR TO FREE CLOG IF ANY.
3. PERFORM LEAK DOWN TEST. IF YOU DONT HAVE THE LEAK DOWN TESTER.
PLACE YELLOW FUNNEL ON RADIATOR FIRMLY AND FILL WITH COOLANT. BLEED THE SYSTEM. MAKE SURE FUNNEL IS ALWAYS FULL OF COOLANT. LET THE CAR IDLE WITH THE FUNNEL STILL ON THE RADIATOR FILLED WITH COOLANT TILL THE FAN KICKS ON. WATCH CAREFULLY FOR BUBBLES. IF THE BUBBLES KEEPS COMING AND THE FAN KICKED ON. REPLACE THE HEAD GASKET.
sick . at least som1 responded...
ok well i know my head gasket is fine.. i did an oli change a couple days ago and that sh*t is all oil. no choc milk or antifreeze in thur..
but i just took out my therm.. i hope it was stuck.
cause im leaving for a 3 hour road trip and wont make it 30 min.
yea.. so idk. i took out my thermistat and hit the road.. took 4 hours of straight driving.. and no problems, it was very cold so traveling a constant speed of 80 cooled me down alot...
and i got home alright too.. so 8 solid hours on it, smooth..
i guess i need a new thermistat cuase mine is " stuck closed "
are the SR20de thermistats the same as the GTi-R thermi...
