Question about 1994 Volvo 940

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Just changed head on '98 940 volvo.coolant keeps running low with no visible leaks.what;s going on? hugo.

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  • madix941 Nov 01, 2009

    Finally found problem.Coolant was leaking inside car under dashboard from heater connection and hidden under carpet.I bypassed the heater by disconnecting hose to heater.



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Posted on Sep 28, 2009

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What color is the exhaust? If it is white with a sweet smell to it you are burning antifreeze. In which case you would have to se where you went wrong with the cylinder head replacement.

Posted on Sep 28, 2009


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1998 v70 estate auto transmission / coolant loss problem, no leaks visible

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Running hot can indicate a number of problems ranging from low coolant to a defective thermostat to a blown head gasket. A few quick things to look at would be coolant level (look in the overflow bottle or ensure the car has had ample time to cool off before removing any cooling system components, including the overflow or radiator cap). If the coolant level is normal, I would check the engine oil on the dipstick. If it appears milky or foamy, you have likely lost your head gasket. If both of those appear normal, let me know, and I will guide you further.

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Feb 23, 2013 | 1999 Volvo S80

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Coolant ran out of the bottom of the car. Nechanic found hose leak. Car is running rough while sitting. Could it be a Gasket?

if you haven't had any coolant in your car for a week and you have been driving it you may have blown your head gasket, even though you haven't got 'milkey goo' on your oil dip stick. check for goo under your oil cap to see and have it tested at a garage. but from what ive read im almost certain its your head gasket. hope this helps you and beware of the dangers of a running engine so keep hands and loose clothing out of the way of moving parts and engines get very hot so be careful what you touch.

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This is NOT a good thing...Better check you engine oil. When engine coolant disappears without any signs of it leaking on the ground, it is usually because it is leaking into the crankcase via a blown head gasket, blown intake manifold gasket, or cracked cylinder head. If your engine oil looks milky, like a chocolate milk shake, it is time for major engine repair or replacement.

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The 2000 Ford Windstar that I have is using water. I fill it up with 2 containers of antifreeze and the next evening it needs some more added. I do not see any visible leaks in the driveway or when it is...

Engine coolant that is disappearing and leaving no visible trace is NOT a good thing. You most likely have a blown head gasket or a cracked cylinder head. (engine coolant going out the exhaust) Also check your oil to make sure the water is not getting into your crankcase. If it is, the oil will be over-full and will look like a chocolate milk-shake.

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Check the coolant reservoir and the radiator for proper coolant level. If low you probably have a leaking intake gasket or possibly a head gasket leak. The intake leak will be visible on either end of the intake manifold, located at the very top portion of the engine. The head gasket usually shows up at the rear head, nearest the belt. You could have a water pump leaking and this would show coolant on the ground under the right front of the engine, more so when the engine is running. They are very common for all 3 problems.

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Common problem. Check your engine oil to see if it looks like a chocolate milkshake and/or is overfilled. If it does, the coolant is leaking into the crank case because of a failed intake manifold gasket....high dollar repair.

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I recently completely replaced the radiator, hoses, water neck, thermostat, and water pump in my 2001 blazer. The temperature gauge stopped reading correctly, saying my car was overheating, which i...

most likely a blown head gasket between a coolant passage and an oil passage not a cylinder . when coolant gets into a cylinder is when you will see the white smoke and the smell.

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1 Answer

Just changed head on '98 volvo 940.Coolant keeps

If you have no leaks you can see, you have a internal problem.
1) Head gasket not sealing off properly
2) Cracked head and/or block
Purchase Block leak tester, for your coolant system and follow instruction. If it test reveals combusting gas in coolant. You will need to pull Cly. head for further testing.

Sep 28, 2009 | 1994 Volvo 940

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