Need to change thermostat, any tips? - 1998 Chevrolet Lumina

Make sure that the thermostat is working properly. It is a good idea to change the thermostat when you change a radiator. How long does it take to overheat? You can leave the radiator cap off, start the car and wait for it to heat up and see if the fluid is pushed into the radiator. If not and the car overheats then you know that the thermostat is bad.

Teresa, change thermostat on 1990 Toyota Taraga. Check the attached links,instruction and guides, Good luck
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Thermostat Tarago Previa Estima TCR
http://toyotatarago.net/1990-1999/online_workshop/pdf/GENERAL_COOLING_SYSTEM_SERVICING.pdf
Replacing your van thermostat
Radiator flush Motor Drain plug Thermostat TCR Tarago Previa Estima

Links below to how and change thermostat
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How To Fix Replace Thermostat GM 3400 Aztek Rendezvous Alero Grand Am...

https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjaqdXcnIDLAhVhl4MKHVamBWgQtwIIGzAA&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D5J7L5iVYNNE&usg=AFQjCNH1iuZUVwmzallx_Lbt115etgwUMg

2002 Buick Rendezvous Changing Thermostat on 2002 Buick CX

If when the sensor was changed , the system lost a lot of anti-freeze, you may have an air pocket. Also you may have a bad thermostat. Was your no heat problem reason for changing sensor? Either way change thermostat, and bleed the system. GOOD LUCK FRIEND.

Please see my tip at http://www.fixya.com/cars/r5929960-s_thermostat . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

Your thermostat is here:

I doubt it,but you can change it yourself. Often we recommend thermostat as a first step because it's cheap. You can do it yourself for a few bucks.

Please see my tip at http://www.fixya.com/cars/r5929960-s_thermostat . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

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

Parts:
1. Thermostat

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

Steps:
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)

Yes they could. Some thermostats are bad out of the box and if you bought a rebuilt water pump it may never have been anything but cleaned.

yeah its the thermostat if your not getting any heat from the heater.

flush: how to video

trace upper radiator hose from rad. to thermostat housing, procedure in depth+ plus illistrations at autozone.com