Question about 1994 Saturn Sl

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Coolant leak from radiator

My wife was driving the car and it started to overheat, once she let it cool and drove it home, i got under it and saw water/coolant draining from one specific hole, it looks like a pressure release valve or something. any ideas?

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  • Saturn Master
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Yes, the vehicle overflow may be that tube which should be venting into a coolant recovery tank.. If the tank is full then it could be the tank overflow...

Posted on May 30, 2009

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if you lost all the coolant most likely the engine overheat. temperature sensor is not accurate if no coolant to touch the sensor.after you fill again,the coolant enter inside the cylinder and kill the sparks.
Remove the spark plugs and inspect for coolant. crank the engine without spark plugs and see if coolant will blow out.turn the engine to cylinder #1 top and pressurize with air. look at radiator if the coolant bubble.

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I have a 1990 toyota cressida, while driving on the frwy, car engine light lit up and the car overheated immediately car began to smoke so bad I thought car was on fire, however the smoke was white. I...


Hello and welcome to FixYa!


If you have overheating problem, it can lead to multiple issues. You may be running on low coolant that's why the vehicle overheats. If that's the case, please add coolant and make sure that it sits on the right level, too much coolant can cause overheating too for coolant will overflow.


The vehicle may have a faulty or worn out radiator blower motor that's why it overheats. If that's the case then you will need a blower motor replacement to resolve the issue.


If the radiator is clogged with dirt and rusts this issue occurs too. The coolant doesn't flow normally on the cooling system if it's clogged. If that's the case, I strongly suggest that you have the radiator flushed to drain out dirt and rusts. If you think that the radiator served you enough then it's better to have it replaced.


Please do check the radiator hoses, If you have worn out hoses it can cause coolant leakage which can result to overheating. A tiny hole is good enough for the vehicle to overheat.


A faulty thermostat sensor can cause the issue too. If you have worn out thermostat, the fan may not trigger that's why the fan won't work when under stressed conditions. A blown radiator blower fuse can cause this issue too so I suggest that you check the radiator blower fuse and replace it when necessary.


Hope you find this information helpful enough and thank you for using FixYa! Have a good one!

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My Honda prelude starting to smoke yesterday. I believe it is steam. I saw green liquid on certain parts under the hood. It wasn't a lot but when I came to a stop and turned off the car it was noticeable....


i recommend you don't drive to far and get a mechanic too check it out as you risk overheating and blowing the head gasket which is expensive. You need to get the cooling system pressure checked too find the leak and rectify it. hopefully just a hose but possably a water pump.

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I may have added too much coolant. After adding it, I drove for about 15 minutes. A few hours later, the tempurature gauge light came on. I check the coolant level again and there was nothing in the...


No, you can't add too much coolant. Rather, it does not hurt anything if you do. Did you add it to the radiator, or to the overflow tank?

Let it cool, then remove the radiator cap, and if needed, add coolant to the radiator. Put the cap back on, and fill the overflow tank to the "full - cold" line. Start it and run it a few minutes and look for leaks. If you find no leaks, drive it for a day or two, then let it cool and check it again. If it is down a lot (without overheating), you have a leak somewhere. If you lose enough coolant, that will make it overheat. However, if it overheats, that can cause loss of coolant, when you stop the car, you will see steam and smell coolant, and often hear it boiling.

If it overheats again, make note of when it happens: driving on the highway, or stop-and-go around town. Overheating on the highway usually indicates a clogged radiator, while in-town overheating usually indicates a bad cooling fan (you don't need the fan above about 30 MPH). A bad fan is usually the fan relay, but it can be the fan thermostat (different from the engine thermostat), or a bad fan motor.

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This one is not easy to tell without seeing the car. But, a logical guess would be that the water pump is starting to go bad and is leaking intermediatly. If you can pressure check the cooling system or have it done that should give you the answer.

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My wife honda Accord 1996 have the same problem, it was the hose from the radiator to the engine leaking when the pressure goes up after a while. a new hose fixed the problem.

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i have a 2000 olds intrigue thats been overheating alot lately the other day my drain plug for my radiator came on the way to work so i lost all my antifreeze on the way, i got to work and wound getting another plug to replace...the one that came out...topped off antifreeze...anyhow i go home and car overheats on the way home...i took it to a radiator shop today and they checked for, leaks, checked the water pump, pressure tested it...and they told me that the only thing they found was a airlock, but however the guy did recommend taking it to a mech and having it checked for a blown headgasket, so i go home today and i noticed my temp gauge going up and down on the way home it would get hot then cool down then get hot again...the car did eventually start to overheated so i pulled over and let the car cool down...i know this is getting frustrating, so do you have any recommendations or solutions as to whats cause the car to overheat.

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You might have a sticking thermostat. If it's sticking shut, it won't open when needed and the engine will overheat. Even though the water in the radiator is not hot then, the water in the block of the engine is boiling.

After that overflow, the cooling system was underfilled, so when the thermostat finally did open, it had plenty of room to refill, which is what you saw when the water got "suddenly sucked in".

My recommendation is to replace the thermostat (and gasket), because as a point of diagnosis, it is a relatively cheap part but can have terribly inconvenient consequences when malfunctioning. If you're handy, get a Haynes or Chilton manual from the auto parts store and do it yourself.

Also, the radiator cap is not good to mess with when the engine is hot. Doing as you did by opening it while overheated upsets the balance between the coolant in the block and radiator. There's a small rubber hose from the top corner of the radiator to a plastic (probably translucent) overflow tank on one side of your engine compartment. Under normal circumstances, you should check the coolant level there, as it exists to keep the system in balance. Note that I said "normal" - which means anytime it hasn't overheated to the point of leaking out of the radiator cap or leaking elsewhere.

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broken fan belt water pump dont turn water dont circulate its gonna overheat alternator dont turn battery light stay on you said the bottle was full and when it cool down it was on low level that normal radiator took back what it was missing check the belt HOPE IT HELP FIXYA OUR POST THANKS PIERRE

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