Check that you have closed and tightened the radiator drain and the two drain plugs near the oil pan. Remove the coolant filler cap on top of the engine and place a funnel in the opening. After that is removed there are four screws, two on each side. Instead, the thermostat sits vertically. It should have one plastic clamp on each end of the filter.
You can replace it Vehicles home with a few tools if you have determined that it's defective. You need to remove that bolt and slightly and carefully bend the metal dipstick tube away from the thermostat housing so that you have some play to allow the housing to come off and over the thermostat the sits within the housing. Price was as cheap as any 1998 Nissan Quest radiator on the internet or local parts store. Make sure the surface is covered but not overdone. Not the same as yours, but maybe this'll help.
You don't need to drain down the system any more the the level of the stat. In colder weather, you might never see the coolant warm up to normal operating temperature, because the thermostat wouldn't be preventing the radiator from over-cooling. Fit the housing over the thermostat and install each of the four bolts, starting by hand and tighten to the tension they were prior to removal. Nissan recommends 105K for changing but that depends on the way the vehicle was driven driving habits , road conditions etc. Then the temp sensor might need to be looked over frayed wire, corroded contact etc.
Instead, it's going from normal towards cool and back to normal. Fit the new brake pads in the calipers and slide the assembly back over the rotor. Just find the top radiator house and follow it to the engine. At the end of the upper radiator hose inside the thermostat housing. Remove them carefully ,tap on housing to remove, and thermostat is within. Shop online with AutoZone and take advantage of either Same Day Store Pickup. Let the vehicle get completely cold it may take hours depending on ambient temperature.
The goods neck is held on the water pump port with three 10mm bolts and is sealed with silicone engine… You can get a kit that has the boot that is open and has new greese that has screws and nuts to put it together. Lower the steering wheel to gain better access to the dash bezel. In other words, is it an inexpensive fix? Put your new thermostat in place on the housing. Its under the black metal belt guard in the water pump housing. Start the engine and allow it to reach operating temperature. Use a large c clamp or a wooden hammer handel if that's all you have.
Squeeze the clamps on both sides with a pair of pliers and pull the fuel line away from the filter. The hose is attached to a metal housing which is bolted to the engine. Remove the bolts holding the housing onto the engine and lift the housing to expose the thermostat. There will be 2-3 bolts holding it in place. Put the radiator cap back on and make sure the arrow on the cap points towards the overflow tank. I would suggest also changing the timing belt as you will be pretty much ripping apart the entire front end of your car to get… Follow the top radiator hose from the radiator back.
The thermostat can go bad for any number of reasons, and it manifests its failure in several different ways. Remove the hose from the thermostat housing and take out the four bolts 12mm heads that hold the housing to the engine. If you already bought a thermostat, you are just looking for a metal piece that is a little bigger with two bolts on the sides holding it on. I am looking at the back of the unit that is out of the car. Open the drain cock slowly by turning it to the right until you see that your Quest's coolant is starting to flow out of the radiator.
At this point you will see an additional hose that curves away sharply and connects to a round, metal housing. There should be no pressure on the system if the vehicle is cold, but practice a safety-first approach and protect yourself properly. I use ultra-grey high temp. Place the thermostat housing back over the thermostat and begin threading all four of its securing bolts by hand. Also there is a support bracket attached to the rear of the head, which must be removed, one 12mm bolt. Once again, it doesn't go past normal towards hot, but it fluctuates from normal to cold.
Dry and clean the water outlet mating surfaces, install the new stat in the same way old one was… a prior response has explained your? Remove the two Phillips head screws from the top of the dash trim. Remove the top radiator hose for access. Or you can remove the radiator fan and separate the thermostat housing from the lower radiator hose. It certainly allows or gives the best chance at making it to safety and to repair. If your engine is cold and the pressure is released from the cooling system this… At the engine end of the upper rad hose.