Question about Pontiac Grand Am

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Coolant and water leaking out of my engine and air is getting in. making my engine to overheat and electric fan not working. how do you take a 4 cyl apart?

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Depending on the car
you can bypass the thermostat of the fan and have it on all the time to cool off the engine
this will usual a bit more the fuel ( petrol or diesel)
the problem is usually a water pump and in most cars you hacve to check if the gasket is keaking and in this case also change the pump
you have to remove the pulley air filter also in most cases to do so and it is better to go to a mechanic in this case

Posted on Sep 27, 2009

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2006 Equinox. Losing water. Over heats. Is this a thermostat or water pump problem??


Depends on where the coolant is going.
If it is an external leak it could be a leaking water pump. If there are no external leaks and you are loosing coolant, it could be a blown head gasket. Especially if the engine has already overheated once.
A sticking thermostat would cause the engine to overheat and then loose coolant from the overflow tank. But not until it overheats.

Oct 06, 2015 | Cars & Trucks

Tip

Basic checks:- if your vehicle is overheating.


The below checks are generally intended to apply to any make of motor vehicle, (even though, to post this tip I had to select a particular make & model).

Overheating may be caused by many things.
Ensure engine tune or other mechanical disfunction is not contributing to the overheat problem.
Ensure there are no vacuum leaks on the engine air induction system.
If gas bubbles are apparent in the coolant reservoir when the engine is running the motor it may have a blown headgasket - (if confirmation is required, go to a radiator shop and request a "combustion gas detector" test).

If no obvious mechanical problems exist I suggest you carry out the following checks:-
1) Check coolant system is not leaking fluid due cracked/perished hose or hose fitting, leaking water pump etc,
2) Check engine cooling fan/s are operating as required when engine temp rises above cut-in threshold - check fan control relay is ok,
3) Check for collapsing radiator hose on suction side of water-pump when motor revs raised above idle.
4) Check coolant reservoir pressure cap is serviceable,
5) Check coolant system is properly filled - carry out any bleed off procedure specified to clear any air locks- (ensure heater core coolant flow is turned on).
6) Check condition of radiator core:-
i) for blockage of air flow to (bugs/grass etc),
ii) for core internal blockage to coolant flow.
7) Check or replace the thermostat.

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1 Answer

Why does my car overheat and i get no heat in car


Have you recently changed your engine coolant? Have you checked your engine coolant? If you just changed the coolant you probably have an air lock in the system and it needs bleed out. To do this i would need to know more info about the vehicle. Another possibility you could have a coolant leak, IE the water pump, radiator hose, heater hose leak. with low coolant the radiator can't do its job and cool the engine. You could also have a broken water pump impeller. No impeller no engine coolant flow threw the engine and heater core.

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1 Answer

1996 acura tl 3.2 overheats and no heat in car\


Have you recently changed your engine coolant? Have you checked your engine coolant? If you just changed the coolant you probably have an air lock in the system and it needs bleed out. To do this i would need to know more info about the vehicle. Another possibility you could have a coolant leak, IE the water pump, radiator hose, heater hose leak. with low coolant the radiator can't do its job and cool the engine. You could also have a broken water pump impeller. No impeller no engine coolant flow threw the engine and heater core.

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I have a 90 chev camaro rs since new, but since then this vehicules has the same problems, "getting hot" and hotter when getting older. I have change every detail at it and even a additional...


Inside your car's engine, thousands of controlled explosions called combustion events occur. These explosions are created by igniting a fuel / air mixture inside the engine. Spark plugs are used to ignite the fuel / air mixture contained in the cylinders. These explosions are converted into power through the engine while producing a large amount of heat. These high temperatures are controlled with the help of the cooling system. A cooling system consists of a water pump, cooling fan, thermostat, radiator hose, hose clamps, radiator, radiator cap and coolant. Engine coolant is used to transfer heat from the engine to the radiator by the cooling system. The radiator removes heat from the coolant by forcing air through the radiator cooling fins. Without coolant your engine will overheat and if left unattended severe engine damage will occur. Engine coolant colors can vary from green, orange, blue, clear and yellow each having their own unique protective and environmental properties. Coolant leaks are a common car problem that can lead to overheating; we have listed some of the most common causes below.(Always inspect engine cold to avoid personal injury) (note: coolant and antifreeze refer to the same product, in below freezing, coolant lowers the freeze point hence the name anti-freeze and in warm weather coolant help raise the boiling point, "coolant").
Troubleshooting Procedure
Step 1: Check Engine Coolant Level, Test For Leaks - Engine coolant is used to transfer heat from the engine to the radiator; if a coolant leak is present the engine will eventually overheat. Inspect the engine coolant level in the coolant reservoir tank; coolant level should be between the hot and cold marks. Always check the coolant level when the engine is cold, preferably over night. If the coolant level is not between the reservoir marks the cooling system may have a leak.

If engine overheating has occurred the coolant level will naturally be low due to expansion of the coolant from the extreme heat of the engine. This heat expansion forces coolant out of the radiator and coolant reservoir. To test for an engine coolant leak move the car to a dry smooth surface and allow the engine to cool. Remove the radiator cap and carefully (do not spill) add water until full, then re-install cap. Start engine and allow to run for about three to five minutes (do not allow to overheat) while the engine is running inspect the ground below the engine, if an engine coolant leak is present observe the location of the coolant drops, this will help determine where to start looking for the coolant leak (shut the engine off before inspecting).

If no coolant is observed two additional checks are needed for a complete test. With the engine off remove the engine oil fill cap and turn it over, if a milky oil condensation is present the engine may have a failed cylinder head or intake manifold gasket allowing coolant to leak internally. To inspect engine gaskets disassembly is required. Next, the car heater core must be inspected; the quickest way to check the heater core condition without removal the heater core is to inspect the passenger's side foot well compartment carpet for the presences of coolant. If coolant is present the heater core has failed and must be replaced or repaired. After necessary repairs have been made refill the cooling system with manufacturers recommended engine coolant and recheck operation.

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1 Answer

Bmw m44 engines heavy water loss


If your car is loosing coolant, there might be an exterior leak, or an interior leak. First check and make sure that radiator cap is tight and the rubber sealer is intact, there can be many other reasons ...hole in the coolant hose, leaking radiator, heater core, water pump, intake manifold and more... Check and see if there is any puddle of coolant on the ground, if so you can find where the coolant is coming from.
There must be an internal leak, a blown cylinder head gasket. See if the bottom of the oil cap looks like somebody spit on it, if so then coolant mixing with the oil, when the engine is running see if there is any white smoke at tail pipe. If engine overheats, and there are air bubbles in the coolant bottle "boiling", this could indicate a bad cylinder head gasket too.

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Why is my 1992 325i bmw overheating


Most BMWs with the M-50/52 series engines(this is the one with all the black covers, 24 valve type) overheat for one of a few reasons. Most common, the coolant leaked out, and now the car can't circulate coolant to cool itsself off. Second, air may have gotten into the system and you are experiencing what is called airlock. This is where the water pump has air in it, and can't push water. You fix this by running it for a bit to make it warm up and pressurize, and bleed the air out using the bleed screw on the radiator; it's right on top. Next problem you can run into, is the water pump may have gone bad. BMW make the bright decision to put plastic impellers on their water pumps, which would break, and not pump water. If this is so on your car, order one that you KNOW is metal, and get the problem out of the way. Make sure that you have the air out of the system before you try to drive it anywhere, or it'll overheat anyways. Finally, and least likely, is the head gasket. Usually these engine will fling oil all over the inside of the engine compartment before they will overheat due to a head gasket. Hopefully this helped you out, and if you have any additional questions, comment on it, as I check back to make sure they're solved.

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3 Answers

Would the heater control valve malfunctioning make the engine overheat blowing hot air out the heater one moment,then not blowing the hot air, temp gage spikes 225 plus. The motor takes awhile to heat up...


Heater control valve malfunction will not cause engine to overheat unless coolant is leaking externally...Overheating going down the road can be the result of a few different things...Partly clogged radiator...Insufficient air flow due to possible fan problem...External coolant leak...Make sure fans are operting properly and have cooling system pressure tested for leaks...Gaining and losing heat on the inside of the vehicle usually means system is low on coolant but you must find out where coolant is going

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3 Answers

2002 Chevy Impala low coolant light is on constantly. Even when car first starts and stays on. After about 10 miles car shows the water gage moving up to overheat. When I turn on the heater siometimes it...


This is usually the lower intake manifold gasket. The problem you are describing is due to a large air gap/bubble in your cooling line. This usually happens when the manifold gasket begins to fail.

You can add coolant, and bleed the coolant system (make sure to get out all the air to eliminate the no heat/overheat problem), but unless the lower intake manifold is fixed, it will probably contunue to leak (it can be a very very hard to detect leak). There are UV dyes u can add to the aNTIFREEZE TO CHECK FOR LEAKS THAT AREN'T OBVIOUS. But the worst case for this is that coolant gets in to the oil, and can ruin your engine. Check your dipstick for milky, creamy oil, a sign that there is coolant in the oil. Get it fixed immediately if this is the case, or you will ruin the engine.

There's info online about doing it yourself, but it's a bit invlved if you are not a mechanic. Expect to pay from 800 to 1200 to get it fixed at dealer or mechanic.

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