Question about 1998 Chevrolet Lumina

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Car is overheating and fans don't come on..also no pressure in hoses when squeezed.possible bad water pump

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Check water pump for noises and leaks repair as required also make the thermostat is not stuck in the closed position.

Posted on Jan 27, 2015


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Posted on Jan 02, 2017

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SOURCE: Overheating

it could be air lock , very common on those engines, more likley is a slight headgasket leak

Posted on Nov 25, 2008

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SOURCE: i have a 95 camaro

check to make sure that your cooling fan kicks on.

Posted on Apr 10, 2009

  • 3854 Answers

SOURCE: my 1999 chevy blazer oil pressure drops when i sit

There is a good chance that your have a intake manifold gasket failure and your losing coolant through your intake gasket causing the overheating or your head gasket has gone bad causing your overheating and the lost of oil pressure. Check your condition of oil to make suer there is no coolant mixed with your oil and also check your coolant in the radiator when the engine it cold. Don't want you to get burning. This would be the worst thing that could be happening to your blazer, as for the over heating. You may be lucky that it's a bad thermostat and it's going to need to be replaced. The low oil pressure could be a bad oil pressure sending unit and that is located at the back of the engine block by the distributor or the oil pressure relief valve has gone bad and that is located at the remote oil filter line housing at the engine block, drivers side.
Good luck and hope it's not the intake,or head gasket. Thank you for using Fixya

Posted on Mar 09, 2010

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SOURCE: overheating no noticeable signs that radiator is

I would put money on the thermostat as a first culprit. Water pumps usually fail in a leaking state rather than in a "not pumping water" state. In the current weather, there will be little harm in running without a thermostat to test it (or even longer if you want to). The thermostat is usually in a housing at the end of the top radiator hose. Unbolt the housing, pull the thermostat, make a new housing gasket out of a cereal packet and take a drive out.

If it works, go buy a new thermostat and gasket at your leisure.

Posted on Jul 26, 2011

  • 577 Answers

SOURCE: 1997 chevy express van overheated now no oil pressure

sounds like possibly head gaskets, when you overheated probably warped heads causing coolant in oil and coolant in cylinders therefore partially hydrolocking...antifreeze does not compress like fuel vapors .check oil and see if looks like creme to light chocholate color. this means coolant in oil, this is very ******* bearings, eats them up and if thats the problem you loose oil pressure cause bearings are sloppy from being worn. Bottom might be looking for another enj.or rebuild

Posted on Jan 05, 2012

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Why did my 2011 DTS Cadillac overheat?

An overheated engine can be caused by anything that decreases the cooling system's ability to absorb, transport and dissipate heat; therefore engines can overheat for a variety of reasons. Let's take a look at some of the most common causes.
Cooling System Leaks
This is the primary cause of engine overheating. Possible leak points include hoses, the radiator, water pump, thermostat housing, heater core, head gasket, freeze plugs, automatic transmission oil cooler, cylinder heads and block. Perform a pressure test. A leak-free system should hold pressure for at least one minute.
Wrong Coolant Concentration
Be sure to use the coolant recommended by your vehicle's manufacturer. The wrong type of coolant and/or mixing the incorrect concentration of coolant and distilled water can also result in engine overheating. The best bet is to perform a complete flush and fill.
Bad Thermostat
A thermostat is a heat-sensitive valve that opens and closes in response to engine temperature. Heated engine coolant passes through to the radiator when the thermostat is in the open position. In the closed position, it prevents the flow of coolant to speed up the warming of a cold engine. When the thermostat gets stuck in the closed position, coolant stays in the engine and quickly becomes overheated, resulting in engine overheating.
Blocked Coolant Passageways
Rust, dirt and sediment can all block or greatly impede the flow of coolant through the cooling system. This can limit the system's ability to control engine temperature, which may result in higher operating temperatures and engine overheating. Once again, a flush and fill is recommended to remove debris.
Faulty Radiator
By passing through a series of tubes and fins, coolant temperature is reduced in the radiator. Leaks and clogging are some of the most common causes of radiator failure. Any disruption in the radiator's function can lead to elevated engine temperature and overheating.
Worn/Burst Hoses
A hose that contains visual cracks or holes, or has burst will result in leaks and disrupt the flow of engine coolant. This can result in overheating.
Bad Radiator Fan
A fan blows air across the radiator fins to assist in reducing the temperature of the coolant. A fan that wobbles, spins freely when the engine is off, or has broken shrouds will not be able to reduce the temperature to proper level, thus possibly resulting in engine overheating.
Loose or Broken Belt
A belt is often the driving link that turns the water pump at the correct speed for proper coolant flow through the cooling system. If a belt is loose or broken, it cannot maintain the proper speed, thus resulting in poor coolant flow and ultimately, engine overheating.
Faulty Water Pump
Known as the 'heart' of the cooling system, the water pump is responsible for pressurizing and propelling engine coolant through the cooling system. Any malfunction of the water pump, including eroded impeller vanes, seepage or wobble in the pump shaft, can prevent adequate coolant flow and result in engine overheating.

Oct 13, 2016 | 2011 Cadillac DTS

1 Answer

No heat but overheating

It could be ( for the overheating) low coolant in radiator, radiator core blocked or radiator grille dirty and restricted, bad drivebelt, fan blades broken or cracked, radiator cap not Holden proper pressure, or ignition timing incorrect.

Dec 25, 2011 | 2000 Jeep Grand Cherokee

3 Answers

Iv changed the upper radiator hose but truck is still going threw coolant and water way to fast and dripping under neath. whats wrong with it?

sounds like the water pump might be going out.
try letting the car cool down, open rhe radiator cap and check for flow.
If you have flow detected while engine is running put the cap back on.
Once pressure builds water will pour out even faster under the car the pump is going bad.
One good indication for a bad pump is water being thrown up against the radiator after a pressure build up.
A cooling system pressure tester can be loaned to you at a local Auto zone shop.
You use this tool in place of the radiator cap and pump up pressure in the radiator and cooling system.
Once a presure is obtsined you can check for the leak location better with the engine not running.
Good luck,Gary

Sep 22, 2011 | 1995 Jeep Grand Cherokee

2 Answers

Overheating replaced the thermostat it was find and its leaking out the side of the over flow tank.

sounds like a blown headgasket. when it is cold and you start it squeeze a radiator hose while it is cold and if it is hard(has pressure) then head gasket. also check for white milky antifreeze. CAUTION cooling systems are under pressure and contain boiling hot water. If you are not experienced do not attempt to fool with the radiator /cooling system. blown gasket repair $400-600

Nov 03, 2010 | 2002 Mazda 626

2 Answers

Water doesn't seem to be running around the system and is getting overheated. From the water bottle the hose to the engine is cold but the hose from the engine is hot as tho there is an airlock. is this...

there are a few possibilities .. first a bad thermostat is likely if the hose attached there isnt getting hot ... if the thermostat has been changed recently then make sure its in the correct way .. the spring or thermal sensor goes toward the engine .. the flipper valve goes toward the radiator .. make sure its not blocked by the gasket .. another possibility is a bad water pump .. an internally collapsed radiator hose is also possible ... make sure the cooling fan is turning on and actually moving air when the radiator gets hot ... you dont need the fan while moving but while idling the radiator will overheat if its not working .. you also have to check the pressure cap .. if it doesn't built pressure then the coolant or water will boil before the fan turns on .. when the engine is hot the radiator hoses should be hard from the pressure .. ... your problem sounds most likely a bad thermostat ..

Sep 17, 2010 | Volkswagen Passat Cars & Trucks

3 Answers

Add anti-freeze every 2 wks.. starts to over heat when in town driving..

sounds like a problem with the thermostat stuck closed and foorcing antifreese out the overflow leaving you with over heating car replace should fix problem around 20 bucks

Sep 14, 2010 | 1999 Oldsmobile Alero

2 Answers

Why does my cadillac 1998 deville keep overheating?

Overheating can be numerous things: Fans not working, water pump, thermostat, overflow cap, and the list keeps going. When the engine is running and heats ups, feel the heat of the top hose, if the hose isn't hot, the thermostat is most likely stuck open and needs replaced. If it is hot we know you have circulation. The cap on the expansion tank may be defective, if it can't hold the pressure of the water, it will release at the overflow cap if the cap is bad. Also check the coolant level.

Jan 30, 2010 | 1997 Cadillac DeVille

1 Answer


check the radiator hoses, you might have one that is squeezing in when the pressure builds, with the car running check your upper and lower hoses to make sure they are not pinching anywhere... also you should make sure that the hoses have no build up in them blocking anything.... hope this helps you out

Jun 13, 2009 | 1997 Isuzu Rodeo

3 Answers

Overheating 94 saturn sc

you may simply have air in your radiator. Often when fluid is changed or leeks out air gets stuck inside. This happens often. You need to locate radiatior pressure relief valve. Open this while car is warm and running, but immediatly close when no air comes out just water.

Jun 05, 2009 | 1993 Saturn SC1

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