coolant spray in engine and overheating
#1
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Recently the radiator went out on my 94 850 turbo. Had it replaced. Overheated again. Under the hood coolant had spayed from the tank. Replaced cap and thermostat. Still spray and overheating. Could it be the coolant sensor or a clog in the system. What else could it be?
#2
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#5
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I would first check the thermostat. If it's stuck at full open, coolant rushes through the radiator so fast that it doesn't have time to dissipate heat (knowledge given to us by Tech
). Then, make sure that the electric cooling fan turns on when it should.
I would then have the cooling system pressure-tested, and have the engine compression-tested.
Ignition timing issue does not usually apply to modern cars, as the timing is controlled by the ECU.
I had the same issue, except mine was due to over-filling the reservoir. I followed the correct procedure, which is to fill the reservoir to FULL mark when the engine is cold. After the issue, I decided to fill the reservoir only about 1" under the FULL mark and the issue was gone.
JPN
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I would then have the cooling system pressure-tested, and have the engine compression-tested.
Ignition timing issue does not usually apply to modern cars, as the timing is controlled by the ECU.
I had the same issue, except mine was due to over-filling the reservoir. I followed the correct procedure, which is to fill the reservoir to FULL mark when the engine is cold. After the issue, I decided to fill the reservoir only about 1" under the FULL mark and the issue was gone.
JPN
#8
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You may want to have the system pressure tested...to be honest, sounds like you have a blown head gasket. If the gasket is blown you will develop higher than normal pressure in your coolant system causing leaks to be exposed. The pressure will leave wherever it can. You overflow cap can handle around 14 psi...the pistons will put much more than that in your system. Start your engine (cold) and put your hand over the overflow, do you feel pressure building?
#9
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carson850
Volvo 850
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01-07-2014 02:08 PM