Question about 1996 Chevrolet Cavalier

1 Answer

Just replaced the water pump (brand new) and thermostat (brand new)on my daughters 1999 cavalier. Belt was placed back on correctly. Car is still overheating. It seems like the pump is pumping water/coolant the wrong way....I cant figure this out?

Posted by on

  • 1 more comment 
  • mom236kim Mar 12, 2009

    We took it back yesterday and got a new one. It looks exactly the same as the old one and the 1st one we bought. When I try to bleed the air out of the system it gets REAL hot....the temp. gauge steady climbs closer and closer to the orange line so I just shut the car off cause Im scared I may cause damage to it by letting it run hot. I have been told that there is air trapped in the system. How long does it take to get the air out...I have tried several times and it just keeps running hot. How should I go about bleeding the air out? I just feel like Im doing something wrong. It also seems like one of the hoses is cool when the rest of them gets hot.

  • mom236kim Mar 12, 2009

    I changed the water pump because car started overheating and there was coolant leaking from the bottom weep hole. The radiator itself was cold and the bottom radiator hose. And no coolant flow on top radiator hose. On this car which way does the coolant flow into the radiator... bottom hose or top hose..thermostat is in bottom hose.

  • mom236kim Mar 16, 2009

    The radiator is not clogged and we bled it the correct way. The thermostat is in correctly because there is something in one of the hoses where you can only place the thermostat in one way, it wont go in the other way. The temperature seems to be ok while you are driving but when u sit idle it just gets warmer and warmer....and still when you touch the radiator it never gets warm. I just don't understand. Also, in this car the thermostat is located on the bottom radiator hose.



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 31 Answers

You've probably replaced it with the wrong pump. The pump can look the same but if you remove it again and look closely you'll see that it spins in the opposite direction. Take it back to the parts store and tell them to try again.

Posted on Mar 12, 2009

  • carfixing Mar 12, 2009

    Which hose is cold? Sounds like a circulation problem. Could be a radiator problem. What made you change the water pump in the first place, just the overheating and you guessed it was the water pump?

  • carfixing Mar 12, 2009

    Are you sure you put the thermostat in, in the right direction? Sounds like it might be backwards. If it's backwards it would take forever for it to open and heat up the radiator. Also how did you bleed it exactly? you should have loosened the bleeder nipple and poured antifreeze in the radiator and the antifreeze should drip right out of the nipple with a good stream. Don't forget, the radiator could be clogged. The best solution is to take out the thermostat and see if it still overheats. If it does, the radiator is probably clogged.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

1999 ford explorer SOCH 4.0 ltr

Alway pick the thermostat with "fail-safe" relief. Look for a float like pressure relief port.

The low tech method to prevent trap air pocket is to drive the car onto an oil ramp (or hill) then fill coolant slowly.

Jan 11, 2014 | Cars & Trucks

1 Answer

I installed the thermostat facing the block. is that the correct way to install?still not getting heat may be blocked core

Yes , you installed the thermostat correctly. However, I have installed a brand new thermostat from an auto parts store and it did not work.So...
  • pull out thermostat, place in pan of water and put on stove or barbecue grill and heat it up. thermostat should open when water boils.
  • if thermostat is functioning, reinstall.
  • check water pump for water flow
  • flush radiator and replace antifreeze
  • leave car running in park on warm day and see if electric cooling fans come on.

Jul 25, 2011 | 1995 GMC Jimmy

1 Answer

1999 chevy cavalier overheats

When the engine has cooled down check the coolant level and make sure it is full. If the coolant is in the operating range, I would suspect one of two problems, water pump or thermostat. With the engine on check to make sure the serpentine belt (should be only one belt for your engine) is turning the pulley for your water pump is rotating without restriction.
The thermostat will allow coolant flow when it reaches operating temperate. You may be able to squeeze the hose and feel the pressure of the water flow when the engine is heating up. Be careful of loose fitting clothes and your body stays away from moving parts of the engine. If you have no flow check the thermostat first and if the flow of coolant is not circulating when the engine warms up you will have to drain the coolant to remove the pump to check the operation and replace if necessary.
The thermostat is inexpensive but you may have to drain and refill the radiator. If the water will not flow though the radiator it will not cool the engine. Follow the large radiator hose to the engine block. The hose connects to a cast iron elbow with two bolts holding it to the block. Drain the radiator fluid, unbolt the two bolts and you should see the thermostat. Clean off the old gasket off the block and elbow then bolt the elbow and new thermostat with gasket to the block to the manufactures torque specs. I would buy some radiator flush if it has not been flushes for several years. Fill the radiator with the correct ratio of coolant and water replace the cap then run the engine for 15 minutes and look for leaks or listen for hissing from the leaks.

Jul 20, 2010 | 2001 Chevrolet Cavalier

2 Answers

I can not locate the thermostat on a 1999 vw passat

The thermostat on your car is located under the thermostat housing. This is located on the engine and your upper radiator hose is connected directly to it. If you are wanting to change it, start with a cold engine, and first drain your coolant out of your radiator, then disconnect the radiator hose from the thermostat housing, remove the bolts that attach it to the engine, and carefully remove it. The thermostat can be removed and the new one installed. Remember to scrape off all gasket residue, and install the new thermostat with a new gasket. Reconnect the upper radiator hose, then fill the engine back up with coolant. Start the engine, and let it warm up and check for leaks!

Jan 24, 2010 | 1999 Volkswagen Passat

1 Answer

1999 cavalier overheating new water pump thermostat new belt new belt tensioner

There a bleeder valve running alone the front on motor on a tube, with engine off open bleeder valve till no more air come's out, add coolant while it's open, then close, and recheck.

Dec 13, 2009 | 1999 Chevrolet Cavalier

1 Answer

Problems with the cooling system

You need to put in a new radiator.

Nov 16, 2009 | 1999 Chevrolet Cavalier

1 Answer

1999 chev cavalier overheating EVEN after one blown motor!

Did you cheak the A/C on my car the compresior is going out and if I turn it on it will heat up my car because it slowes down the belt witch dose not alow the water pump to work like it should. sound like the thermostat is lock up or an air pocket in their burb the system and check to see if the thermostat is lock shut you can do that by heating your oven to 230 remove any gaskets and stick it in the oven from their if it open you know that works. If not I would get thermostat that is name falsafe it will cost you about $2.00 more but when it locks up it locks open that will save your car.

Jul 23, 2009 | 2001 Chevrolet Cavalier

1 Answer

Need to replace water pump

To replace the water pump on a Cavalier follow these steps:

* Disconnect negative battery cable

* Drain the cooling system into a proper container.

* Remove the serpentine belt

* Remove the alternator and bracket

* Unscrew the water pump pulley mounting bolts and remove the pulley.

* Unfasten the mounting bolts and remove the water pump.

* Use a putty knife and thoroughly clean old gasket material off of gasket mounting surface.

* Place a small bead of RTV sealant on new water pump.

* Put on gasket and make sure bolt holes are lined up properly.

* Install the water pump and tighten the retaining bolts to 18 ft lbs.

* Install the water pump pulley and then go back to retaining bolts and tighten to 22 ft lbs.

* Reinstall alternator and bracket.

* Put on serpentine belt.

* Fill cooling system to proper level with coolant.

* Connect battery cable, start the engine, and check for leaks.

Sure hope this helped you and good luck with the repair.

Jul 20, 2009 | 1999 Chevrolet Cavalier

Not finding what you are looking for?
1996 Chevrolet Cavalier Logo

181 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

78257 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides