Question about 2000 Pontiac Sunfire

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The water pump was replaced,thermostat replaced,car spews water from the overflow tube and emptys the water from the engine!

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  • Dave  C
    Dave C May 11, 2010

    The engine has a blown headgasket.

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Where is the water pump for a 2000 Pontiac located?

Posted on Mar 21, 2011

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Probably either head gasket blown, or crack in head or block. Have you had the engine hot lately? Look for white smoke out of exhaust that will confirm head gasket or cracked block or head.

Posted on May 01, 2010

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Related Questions:

1 Answer

How do I tell if thermostat is stuck or watertpump bad


Dear Connie,
This depends on the year, make, and model of your vehicle.
Some engines are installed longways to the car, some crossways. That matters.
A stuck thermostat will not leak water.
(It can, however, cause water to leak , sometimes violently!)
Thermostats are inside metal housings.
Water pumps can leak water, out the "weep" hose in the casting. Water spewing out of the engine could also be a cracked or burst radiator hose or heater hose.
On a few cars, mostly older ones, it can also be a leaking or burst "freeze plug", also called a "sand plug".
God bless your efforts.

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Can a water pump make water to return to the water bottle


If the engine overheats from a thermostat
stuck closed or bad head gasket

Aug 10, 2013 | Cars & Trucks

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I have a 1999 oldsmobile intrigue with a 3.5 engine and it is overheating what might be the problem?


It's usually the thermostat, I woud pressure test the cap. It may need to be flushed. Are the fans working? Is there a 50/50 mix of anti-freeze

Sep 11, 2011 | 1999 Oldsmobile Intrigue

1 Answer

Overheating


OVERHEATING CAN BE CAUSE BY MANY THINGS LIKE FAULTY THERMOSTAT AND FAULTY RADIATOR PRESSURE CAP,TOO MUCH WATER IN COOLANT SYSTEM NEED 50 / 50 WATER AND ANTIFREEZE.LOOK FOR WATER PUMP WEEP HOLE LEAK, IF COOLANT LEAKING OUT WEEP HOLE WATER PUMP BAD NEED REPLACING.CHECK FOR LOW COOLANT LEVEL, YOUR RADIATOR OVERFLOW JUG SHOULD HAVE COOLANT AT THE FULL COLD MARK IF NOT KEEP ADDING COOLANT INTO COOLANT OVERFLOW JUG UNTIL COOLANT STOP DROPPING AND FULL COLD MARK, IF OVERFLOW COOLANT JUG WAS EMPTY RADIATOR IS LOW ON COOLANT.WHICH CAUSE AIR IN COOLANT SYSTEM KEEPING THE ENGINE COOLANT TEMPERATURE SENSOR FROM BEING SUBMERGE IN HOT COOLANT WHICH TURN ON THE COOLANT FANS.WHEN ENGINE COOLANT TEMPERATURE GET CERTAIN SET TEMPERATURE LIKE 190 DEGREES THE PCM AND COOLANT SENSOR WILL TURN ON COOLANT FANS, IF VECHICLE OVERHEATING COOLANT FANS NOT WORKING EITHER YOU HAVE FAULTY ENGINE COOLANT TEMPERATURE SENSOR CHECK COOLANT FANS FUSE AND RELAYS. YOU CAN CODE SCAN CAR TO SEE IF YOU HAVE FAULTY PCM, FAULTY ENGINE COOLANT TEMPERATURE SENSOR OR FAULTY COOLANT FAN RELAY.IF COOLANT FAN AND ENGINE COOLANT TEMPERATURE SENSOR OKAY,YOU HAVE CORRECT COOLANT LEVEL IN COOLANT SYSTEM, THERMOSTAT AND RADIATOR PRESSURE CAP BEEN REPLACED, YOU COULD HAVE BLOWN HEAD GASKET CHECK ENGINE OIL LOOKS LIKE MILK SHAKE HEAD GASKET BLOWED ALSO WHEN HEAD GASKET BLOWED YOU CAN DRIVE CAR SHORT DISTANCE START OVERHEATING AND YOU LOOSE ENGINE POWER SUSPECT BLOWED HEAD GASKET.

Aug 04, 2011 | 1999 Oldsmobile Alero

1 Answer

Hi there my subaru station wagons coolant is boiling and spewing out of the overflow tank i just got the water pump changed but not the thermostat im just wondering is it that or something else


Definitely at least try a thermostat.Seeing how you did the pump already,if it still happens after a thermostat,this is going to be an issue.Good luck! Greg How quick does it overheat?If it's pretty quick thermostat.If it's gradual and you can go like 40 miles before it overheats it could be a loose belt.

Aug 14, 2010 | 1993 Subaru Legacy

2 Answers

I have a 1997 BMW 328i- Left it idling in the driveway for about 10 minutes, and it over heated, and started spewing rad. fluid out of overflow tank- let it cool down, took off up the road, and it...


yes, if the water pump is bad, input hose will be hot output hose will be cool, but that also could mean a bad thermostat.

a way to see if the water pump is pumping coolant is to remove the bleed screw on the thermostat housing and see if coolant spews out.

But it overheats. may as well change out the water pump and get rid of the original plastic impellers. While you're there, replace the thermostat with a 12 degree cooler one and drill 2 3/16" holes 180 degrees from each other in the thermostat.

2.8L motors are sensitive to overheating. you can bust a head gasket this way in no time. Also warp that long cylinder head.

Jul 13, 2010 | 1997 BMW 328

6 Answers

Radiator fluid spewed everywhere.


a stuck closed thermostat may have caused the engine to super heat on shut down, the radiator fluid came from the surge tank as it boiled over..

Jul 08, 2009 | 1995 Jeep Cherokee

1 Answer

Aerostar engine runs hot


I believe your thermostat is stuck in the closed position. It's not allowing coolant to circulate and cool off in the radiator. The water coming out of the tube is from the radiator overflow tube. The super-hot coolant is expanding and has no where to go since the thermostat is stuck. Replace the thermostat and use a new gasket set. Its an easy job if your handy with tools.

May 05, 2009 | Ford Aerostar Cars & Trucks

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