97 Cavalier engine heats up and blows coolant out plastic reservo
Just driving along and lost all coolant.
refilled at home couldn't find anything car heated up and as far as I can see it blew coolant past plastic reservoir lid seal. and then engine stalled or shut off.
can't find thermostat?
I was thinking bad thermostat or head gasket?
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Re: 97 Cavalier engine heats up and blows coolant out...
Check your oil and see if it is milky lookinig...that is a sign of a bad haed gasket....here is the location of the thermostat...unless a different engine size...then post what you have and I'll get you the diagram here:
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Coolant is too low. Coolant was not properly refilled, so there are large air pockets in engine head. DO NOT DRIVE until proper purging and correct coolant quantity and level are established.
To completely refill the system, you need to get the heater core full of coolant (the refilling has to be done with the heater on m?ximum, so to allow coolant to enter and fill heater core. Tha is the reason you don't get hot air. Amclaussen.
the 97 to 02 were famous for bad gaskets between the intake manifold and heads. this caused loss of coolant. pull oil fill cap off and see if is foamy on bottom, sniff for coolant smell in exhaust. suppose you would have noticed oil in old coolant as you drained it.
most likely it's a bad thermostat that is stuck open and the engine doesn't warm up properly - which might explain a bit about the heat issue as no heat builds up in the heater core, this can be done yourself - if I remember right (was over a year ago) it was only $9 at O'Reily/Murray's plus coolant - just be careful with the coolent as it's very toxic and if there's particles or looks very dark do not reuse (if you've not had it done before, it's probably best to just replace it anyway) and you should dispose of the used coolent properly (Do Not just dump it down a drain)
If your test drive was short, but your drive home is longer, it could be a coolant leak. Coolant creates a thick white smoke when it burns. If it's coming out of the tailpipe, then it must be coming through the engine at some point, possibly from a failing head gasket.
A fairly inexpensive test for this is to drain and flush the radiator, refilling it with water, running the engine to warm it up, then drain and flush again, refilling it with water. Be sure to drain and flush the overflow reservoir as well if you can. And please be careful working with a hot radiator - steam burns skin very easily. This should remove at least 75% of the ethyl glycol antifreeze that causes the smoke.
Now, when you run the car up to temperature, if it still smokes white, but much, much less, then it is in fact coolant leaking into the engine and being vaporized and pushed out through the exhaust. The most likely point of failure is the head gasket - which means a several hundred dollar fix.
if you had heat before the problem than there is probably air still in the system . dont know your motor set-up , but it might have a bleed valve on the thermostat housing or a bypass line . if not , start the car and let it warm up ......in the mean time take the upper radiator hose off @ the radiator . When it heats up to normal temp , the coolant should flow out of the hose . that will tell you that the thermostat is opening , and it will also get the air out of the system @ the same time . As soon as it starts to flow , hook the hose back up and tighten . refill the cooling system back to the full line , than check for heat GM is bad about getting air trapped in the system .