Question about 1999 Oldsmobile Cutlass

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Antifreeze boils out the fill tank fans dont kick on changed fans waterpump thermstat heatsensor reays still boils out

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  • Oldsmobile Master
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Re-torque the cylinder head bolts. If the problem persists, check the radiator for clogged, or perform the coolant system test and replace the cylinder head gasket.

Posted on Dec 28, 2013

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Posted on Jan 02, 2017

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SOURCE: changed waterpump thermostat and i have bleed the

If you're saying that the problem is air bubbles coming into the overflow tank, then there probably isn't a problem. If you just completed the service and started running the vehicle, then it might do this for a while until all of the air is worked out of the system. Continue to run the vehicle until it reaches operating temperature. Shut the engine off and let it sit for a while. After it cools off, then check to make sure it is completely full of coolant. Start the engine and drive the vehicle with the heater on and the fan on high until heat starts to come out. Shut the engine off again and let it sit. Make sure the coolant is full before driving it again. Due to changes in cooling system design, air can be difficult to remove completely without some effort. I hope this helps solve your problem. Thank you for trying Fixya.com.

Posted on Jun 28, 2011

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1 Answer

Can my fuze for fan on radiator be bad


first change thermostat , when filling with coolant let the cap away start engine then fill her up until thermostat open then put back the cap ,, fill the reserve tank to the mark.

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Sounds like you still have air in the system..Does the vehicle have any bleeder screws on the thermostat housing or around the waterpump area..If it does open them up until you get a good stream coming out

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Hi, My car is boiling water and it goes our from the overflow pipe at the coolant level water tank. I let my car run for one hour standing on my driveway and the temperature was going to 222 and then the...


When sitting still, yes both fans on a car equipped with two fans will run. The temperature ranges you posted seem within acceptable range. That said, the water (coolant) should not boil at those high temperatures, but some overflow is expected/normal. Ensure that you are not adding pure water to the radiator and instead are premixing it with antifreeze coolant or adding premixed 50/50 that you can buy at auto stores as this will keep the water from boiling and freezing.

As an added point of information, the hose leading into the overflow jug is two-way, meaning that when the coolant in the radiator cools down enough, it creates a vacuum and pulls coolant back into the radiator.

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My Dodge Interpid, 1997 model is always overheating. I've been change the waterpump, the fan motor and the radiator as well but the problem is still unsolved.....


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AFTER THREE MILES THE WATER BOILS IN THE RESERVE PLASTIC HOLDING TANK, AND THE FAN NEVER GOES ON. ALSO, WHEN I TURN ON THE HEATER, THE RPM GOES DOWN ABOUT 600 POINTS.


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Water overheating on a year 2000 seat toledo 1.9tdi se, is the water pump easy to replace??


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2001 blazer - i have changed radiater,heatercore,waterpump and 2 thermostats - still overheating on me? coolant level is fine until it gets hot and boils out overflow tank? help!


Are your antifreeze 50/50 mix. Too much antifreeze ratio will cause over heating, the antifreeze will start to gel when it get's hot causing poor circulation. Water is the best liquid for heat transfer but it will also boil over and steam out the radiator cap, that is why antifreeze is added to keep this from happening. Looks like you have covered most of the base on your cooling system, Did you do a complete cooling system flush to get some of the corrosion out and it's been know for the orange antifreeze when gelled will clog up the cooling system. Make surer you have 50/50 mix and if you not sure you can buy a antifreeze meter at any large parts store like Auto Zone. Keep me posted, be glad to help.

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My 94 mazda 323 is boiling in the overflow tank. i have a ajustable thermate state that fix the promblem last time but now its doin it again. check by racq and they said that my fan is not kicking in.


I have had a similar problem.Check all of your Radiator and Heater hoses for leaks. The cooling system doesn't need to lose much coolant to create overheating problems. If you find no leaks -check that your bottom radiator hose isn't sucking flat and restricting coolant flow.

Dec 20, 2008 | 1993 Mazda 323

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