Question about Oldsmobile Aurora

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I drive an oldsmobile aurora 98 and it keeps over heating. I have changed the radiator and the upper hose as well as the heating hose. now it seems like the lower hose is gone. it seems I keep changing parts but not solving the problem that are leading to the leaks. Not sure why its getting so hot!

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Based on the description, either the problem is on the water pump, the radiator fan or the hoses. If you have replaced the hoses or noticed that the hoses are not brittle and clamps are ok, then you can eliminate it as one of the source of the problem. Inspect the radiator fan if it turns on when you remove the thermostat. The thermostat looks like a small plug that has wires coming out of it and is connected to one of the radiator hoses. If it does not turn on it could be a problem on the relay or the fan itself. You may swap the AC fan relay with the radiator fan. If it still does not turn on then it is a bad fan. If it turns on then, have the relay replaced. Other than that your water pump for the radiator needs replacing. It may not be circulating water correctly.

Posted on May 05, 2010


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1 Answer


It's at the engine end of the lower radiator hose. Remove the hose clamp and two bolts holding the hose fitting. It will fall into your hand.

May 15, 2012 | 1997 Oldsmobile Aurora

2 Answers

Just bought a 1999 aurora with 4.0 liter v8, drove it 2 miles and was smoking from engine compartment smelled like antifreeze

There apparently is a coolant leak, could be the radiator, upper or lower radiator hoses, water pump, heater hoses or thermostat housing gasket.

Oct 13, 2010 | 1998 Oldsmobile Aurora

1 Answer

Upper hose from Radiator burst today shortly before or after arriving at work. Replaced with a new one but concerned hose is not real problem. aluminum housing on drivers side of upper hose extremely...

keep your eyes on the the temp when driving. sometimes the fan takes a little longer to come bad is the anti=freeze.when was the last time you changed your hoses. every for to 6years hopefully.but be sure the fan does come on before it starts to over heat.

Sep 21, 2010 | 1988 Oldsmobile Cutlass Ciera

1 Answer

Were is the temp sensor located on a 1999 aurora

Follow the upper radiator hose to the engine, where it hooks up, that's the thermostat housing, will be on the housing or just a few inch down from there, will have a two wire connector.

Jul 10, 2010 | 1999 Oldsmobile Aurora

1 Answer

Change termostat

remove upper radiator support, remove air resevoir connect to air intake pipe, remove clamp on lower radiator hose, remove 2-10mm bolts and pull thermostat out.

Jun 19, 2010 | 1999 Oldsmobile Aurora

1 Answer

How to change the thermostat

For 1999 Oldsmobile Aurora 4.0L SFI DOHC 8cyl check thie how to replace a Thermostat:

1. Thermostat

1. 3/8 in. Drive Ratchet
2. Needle Nose Pliers
3. Screwdriver
4. Cooling System Pressure Tester
5. Socket Set
6. Radiator Hook Tool

Step 1 Open the hood and locate the vehicle’s radiator.
o Tip: Make sure the vehicle has cooled down before inspection.
o Tip: Safety Tip:Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or safety shoes.

Step 2 Remove the vehicle’s radiator cap and use a radiator pressure tester to check for leaks.

Step 3 Drain out some of the engine coolant in the radiator so the coolant level is below the thermostat housing to prevent leaking when replacing the thermostat.

Step 4 If necessary, remove the upper radiator hose.
o Tip: A twisting motion may help to initially break the upper radiator hose loose. You can also use a flathead screwdriver to help pry the hose off. Make sure not to damage the hose.

Step 5 Remove the thermostat housing bolts.

Step 6 Remove the thermostat housing.

Step 7 Remove the thermostat.
o Tip: Make sure to note the way the thermostat is installed. Installing the thermostat backwards will affect how the cooling system performs.

Step 8 Clean the mounting surfaces. Install the new thermostat as it was removed and always use a new thermostat gasket.

Step 9 Reinstall thermostat housing and tighten mounting bolts evenly. If applicable, reconnect the upper radiator hose.

Step 10 Refill the cooling system with coolant.

Step 11 Start the vehicle with the radiator cap off and allow the engine to run for several minutes. This allows the air bubbles to escape the cooling system.

Step 12 Reinstall the radiator cap.

Step 13 Run the engine until up to normal operating temperature. Remember to keep an eye on the temperature gauge to prevent overheating.

Hope helps (remember rated)

May 31, 2010 | 1999 Oldsmobile Aurora

1 Answer

Leaking antifreeze

Check your hoses entering your block and radiator. you may need to bring your vehicle into a garage and ask for a "Pressure Test" this will indicate if you have a crack or leak.
Good Luck.

Sep 10, 2009 | 1997 Oldsmobile Aurora

1 Answer

2001 aurora engine heats up when not moving down

Likely the fan(s) not turning on when engine gets hot. Is the check engine light on? Read the code(s) and repair as needed. Check (when cold) the fan(s) for free turning--if seem bound or hard to turn, replace the ailing fan. Check the radiator and reservoir fluid level. Watch the fans as the engine heats up. Feel the radiator area where the upper engine hose connects. It will suddenly turn hot when the thermostat opens. The fan assembly should activate somewhat after. Hopefully, the engine code recognized a defective temp sensor and was replaced.

Aug 11, 2009 | 2001 Oldsmobile Aurora

3 Answers

1998 aurora

I have had this problem with my 98 aurora and have replaced all the same components. Temp gauge routinely shows 200 on highway (Fine) but in the city in stop and go will get to around 245. I installed a switch to manually turn on the cooling fans by connecting the ground to pin 86 in the relay for the fan(s). Otherwise the fans will not turn on to 245. This fix works but would like to know an actual solution.

Jun 22, 2008 | 1998 Oldsmobile Aurora

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