If they are noisy, you might try changing the oil and filter and using an oil additive designed for addressing high mileage motors with noisy lifters. Add coolant and check for leaks. Install housing and retaining bolts. It can be located by looking up underneath the glove compartment, and attaches itself to the ductwork. In some cases, this repair may be as simple as replacing a hose or tightening a clamp. I hope I could be of some help. Please let me know if I can help you further.
A good thermostat would be partially closed under those conditions, because the radiator is pulling a lot of heat out of the coolant. Faulty Frontier thermostats stick open or closed and cause serious problems. Is your temperature change a flutter of the gauge, or a gradual drop and recovery? The thermostat is located in the housing just above the water pump. There are 3 bolts holding the thermostat housing in place, remove them. If it is anything like my 1998 Nissan Frontier 4-cylinder, then it is located on the engine block side of the bottom radiator hose to the top left and in between all of the belts.
The blower fan and motor can be acessed by removing about four Phillips screws and the two other phlips screws that hold the glove box latch onto the dashboard. The first key is to make sure you get a thorough removal of any residual gasket maker material from the prior housing installation using a razor blade or whatever other straight edge you prefer. I had to come to work this morning and didn't finish the job yet, but I hope to finish within a few minutes since I have everything undone. My lower radiator hose was practically welded onto the housing and the space for prying the hose loose is very tight. Most radiators also have a separate cooling system built in for transmission fluid. In the 98 you have to seal it with silicone. Changing the thermostat was the final step in solving my problem with the flaring temperature gauge.
You won't need any special tools to replace a Nissan thermostat, just a few basic ones you probably already have. Remove housing, clean, insert new thermostat, add silicone to housing and install everything back. Or you can remove the radiator fan and separate the thermostat housing from the lower radiator hose. The difficultly that I was having was getting the housing to go over the new thermostat without bumping the new thermostat from its properly seated position. But if your radiator has failed, a lack of coolant can lead to overheating or even a seized engine. Apply a thin amount of gray silicone sealer to the thermostat housing. Posted on Apr 16, 2009 Follow the top radiator hose to the engine.
To find the thermostat housing, just find your engine oil dipstick. I try to replace coolant with the rear of the car inclined down from the front. The resistor is in the ductwork on the passenger side. They are hydraulic and self adjust. Then the temp sensor might need to be looked over frayed wire, corroded contact etc.
Dec 30, 2009 Follow the upper radiator hose to the engine. Remove the bolts holding the housing onto the engine and lift the housing to expose the thermostat. I just replaced the thermostat on my 2000 a couple of months ago. I have gotten many parts from them, always the correct ones with normally 2-4 choices of brand, type, oem or not, and warranty. If so, please don't tell me it's buried under the blinker fluid, windshield bearings and ashtray sensor. Once the belt is out, remove the idler pulley bracket, by removing the two bolt on the right side and one nut on the left side Yellow arrows Once the bracket is out remove the radiator hose bolt and then the 3 bolts holding the thermostat housing. Putting things back together would be very simple if the thermostat sat horizontally inside the housing.
The thermostat in your Nissan Frontier is required to regulate the flow of coolant through your motor. Then just back out the two bolts that hold the housing down. Purely out of caution I replaced the thermostat and of course used Nissan Coolant. Meaning the plug wires go into a square block which is the ignition coil assembly. So I gave up on that and just decided to get it done with the hose attached, which I was able to do. Then seal up the rad and top off the tank if needed. The only tool you will need is a Philips screwdriver.
They are usually located at the front of the vehicle, behind the grille for maximum airflow. I looked all over the internet trying to figure out the location of the thermostat because Nissan didn't provide me with any book explaining how to do anything change headlight, etc. Sorry to hear that your car is having trouble. There is a metal tubing in the middle of that top hose that leads to the thermostat housing. If they go to a cylinder then that's the cap. It is a round canister hoses held on with fuel line clamps.
You should be able to see a hose that runs parallel to the engine block behind and above the alternator. I'm not all too well versed in your vehicle, but can offer an option for you. Remove the two screws that secure the resistor to the blower motor duct… Follow the plug wires form the spark plugs. Typically, you'll see cooler temperatures while out on the highway, because that's when the radiator gets a lot of air forced through it. If you have the right tool it might be easier. ? I'd like to know a cheaper way to do this.
Thanks so much for the info. Loose the belt idler pulley bolt and then adjust the idler adjusting bolt to remove the belt. The 4 Cly engine does not have adjustable valve clearances from the stand point of using a few wrenches, one to adjust and the other to lock the adjuster when the clearance is correct. The heater blower relay is under the dashboard on the passenger side of the compartment. The best way I found to get to it is to remove the Passenger front tire, remove the splash guard, Remove the bolts on the power steering hose bracket just makies it easier to get into the area ,remove the oil filter. My temperature gauge was flaring up toward the hot end vs.