Question about 1997 Chevrolet Cavalier

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My problem is when the sun is hot and I stop my car and turn off the engines the water boil out.this only happen when the place is hot,in the night the water ok.

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Your problem is the engine is overheating. On warmer days its causing the engine to overheat to the point your coolant gets too hot. There could several issues here. Start with your radiator as it may be clogged with rust or deposits from never having a flush. The next thing to look at would be the thermostat. these are a common part to go bad as they are exposed to varying temperatures throughout its life. The thermostat be stuck/seized in the closed position which in turn is not allowing coolant to flow freely around and through the coolant lines, causing the overheat and boil over issue you are experiencing. You may want to get this repaired soon or you this will cause irreparable engine damage; blown head gasket, warped head, cracked head. Etc.

Posted on Oct 21, 2013

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2006 Chevy trail blazer. Keeps getting hot. Anti-freeze is full, overflow container is half full. Every time I turn it off can hear fluid in radiator boiling and bubbling?


Pam are you sure it's boiling? If the Antifreeze is boiling I'd think you'd see steam coming out of your reservoir as the water expands into the reservoir, but you didn't say you see anything like that.
Of course engines get hot, that's why we have the cooling systems but it doesn't sound like it's "boiling" to me with no signs of visible steam unless your antifreeze level is really low?

If it's really boiling, and you antifreeze level is good, then your reservoir should be getting filled up with expanded hot water that goes into it to catch it when it expands.

If the water isn't going into the reservoir, then maybe your antifreeze level in the radiator is too low and you need to add antifreeze?
.
Best to fill the radiator with the engine cooled down. If you ever have to open the radiator when it's hot, NEVER open it with your bare hand as you could get scolded with boiling water. Instead use a big thick towel to remove the radiator cap off a hot engine. Again, if you can, just wait until the engine cools then open the radiator cap.

With the engine cool, you can fill the radiator with a 50/50 antifreeze mix. The 50/50 mix come premixed 50 percent water, and 50 percent antifreeze. So you can throw that stuff straight into the radiator.

Non mixed antifreeze needs to be mixed 50/50. Some people use 50 percent distilled water when they mix it because distilled water doesn't have the minerals in it that may get stuck in your radiator. That's being a bit picky about it though. Tap water works fine in a pinch. The other 50 percent is antifreeze. You can mix it right in the radiator too, put in a measured amount of the antifreeze, followed by the same measured amount of water. The water pump will mix it all together when you run the engine.

Put the cap back on and run the engine and if/when the water "boils" it should go into your reservoir. If it does boil in go in the reservoir then yes...your engine is getting hot and the antifreeze is boiling.

When the antifreeze boils, it's probably because your thermostat is stuck closed. That means the thermostat isn't letting water circulate through the radiator to get cooled. Thermostats are cheap...no more than $30 I'd say for most cars. Changing them is pretty easy too as they are usually right at the top of the engine. A mechanic may charge $100 to change it....but it's an easy job on most vehicles requiring just a couple sockets/socket wrench.

Oct 03, 2016 | Cars & Trucks

1 Answer

Engine hot a/c turned off


1/ Check the thermostat take it out place it in bucket & pour Boiling water over it it should open very quickly if not that is you problem, Note: clean the thermostat is clean of rust or whatever before doing this. Hope this helps Best Wishes, Malcolm Campbell.

Jul 04, 2017 | 2007 Chevrolet Equinox

1 Answer

My problem is with my1997 Chevy cavaliers is when the sun is really hot during the day and I turnoff the engine the water will boil out.there is no thermostat.can u help me


Hello,

I just had a similar problem.
Replace the reservoir cap for the radiator--or if you have a radiator cap replace that.
I hope this helps.

Oct 21, 2013 | Chevrolet Cavalier Cars & Trucks

1 Answer

Water in reserve tank boiling from radiator


well the reserve thank usually holds excess water. basically when water gets hot it expands and increases in size, the expansion causes some of it to go into the reserve and it can be very hot even boiling..

did this happen before or is it strange ?
notice any other problems while driving around, noises, engine overheating ?
does the radiator fans turn on ??

Dec 30, 2012 | 1995 Toyota Corolla

3 Answers

Engine overheating i have replaced the radiator has plenty of water


replace thermostat.then bleed coolant system, this is how you do it.fill the cooling coolant system with 50 / 50 dexcool and water to raise boiling point,straight water will evaporate boil away cause engine to overheat catch fire thats why you need 50 / 50 mixture antifreeze and water.to bleed coolant system first fill coolant system until coolant stay at the full cold mark on the the coolant overflow jug,then you start engine allow it to idle,place the heater and ac control in any ac setting except max and the temperature control to the highest setting,run engine until lower hose to water pump is hot. with the engine hot run the engine speed up to 3000 rpm and allow it return to idle, repeat this 5 times. slowly open the bleed valve on the thermostat housing or look for bleed valve at the water pump heater hose.open bleed valve for 15 seconds to expel any trapped air.then top off the coolant as necessary,and when top radiator hose hot thermostat open up.keep adding cooling to overflow until coolant level stop at full cold mark dont over fill coolant.if engine seem like overheating while looking at cooling gauge turn off engine wait a while until cool off add more coolant until coolant level stay stable and dont drop any.when open radiator overflow cap use large rag over the radiator cap to keep from getting scald open radiator cap a little at a time but dont open radiator cap until engine cool down first.replace the radiator overflow cap, thermostat,and engine coolant temperature sensor and check the cooling fans fuses and relays see what happens.

Aug 18, 2012 | 1998 Oldsmobile Intrigue

1 Answer

I have 85 toyota have changed water pump reader cap thermostat and still gets hot boils out water but when you put cold water it's ok for the rest of day sets over night start next day gets hot ag


did you let excess air out of radiator? after filling let it run for a few minutes with out radiator cap and make sure the water does not go down and serculates after thermostat opens, refill if needed
do you notice moister under vehicle in the morning ? possibly a gasket could be leaking.

Mar 30, 2012 | Cars & Trucks

2 Answers

Orginally, the temp gauge reads normal, drives fine, shut car sown and the reserve tank is boiling, changed the thermostat last night, let the car heat up drove it 2 blocks away, temp gauge shot up to hot...


2 blocks is fast to reach boiling.Take the cap off the overflow tank and fill it right to the very top with coolant.Start the car and watch for a steady stream of bubbles.If you see a steady stream you do need a head gasket or have a crack somewhere in a combustion camber.

Jul 03, 2017 | 2001 Chrysler 300M

2 Answers

Engine temp goes up to 230 degrees


It's actually normal for engine temps to go up to 220 deg. F or 230 deg. F in the summer time, even in normal engines that run at 196 deg. F typically.

This happened to me with no malfunctions on my 1997 Cadillac Deville, yesterday.

Actually, engines run more efficiently at higher temperatures like this.

Just make sure your coolant is topped off and that it fluctuates between lower temperatures and this high reading.

This is a normal temperature in my experience for GM vehicles.

Aug 11, 2010 | 2002 GMC Envoy

3 Answers

Car overheats and coolant boils


sounds like the thermostat may be sticking closed. i would check to see if the thermostat is opening or not

Jul 31, 2009 | 1999 Dodge Neon

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