Where is thermostat located?
In most cars the thermostat is placed under a housing near the water pump on the cylinder head ; the housing is connected directly to the top radiator hose . In a few cars the thermostat is housed near the bottom hose. Test the thermostat quickly by starting the engine from cold.
How do you know if the thermostat is stuck closed?
If one (usually the top) is cooler, but the bottom is burning up, that indicates the thermostat is stuck closed as well. Do not stick your hand near the front of the engine while the fan and belt are moving, and never remove the radiator cap from a hot engine.
How do I know if my thermostat or water pump is bad?
Symptoms of a Bad or Failing Water Pump
- Coolant leak at the front-center of your car. …
- Water pump pulley is loose and making whining sounds. …
- Engine is overheating. …
- Steam coming from your radiator.
Can you run an engine without a thermostat?
You may think your engine would overheat without a thermostat in place, but actually, the opposite is true. A car without a thermostat would never even warm to operating temperature, much less overheat. … This will allow your engine to reach optimal operating temperature, improving gas mileage and performance.
Can you unstick a car thermostat?
Grab the top radiator hose and squeeze it when it’s under zero pressure to get a feel of what that’s like. Replace the radiator cap, rev the engine to about 3000 RPM (this does not have to be exact, you just want to spool up the engine a bit here), then squeeze the radiator hose again.
How do you know a thermostat is bad?
4 signs your thermostat is bad
- Sign #1: Your thermostat has no power or is unresponsive. …
- Sign #2: Your heater or A/C won’t turn ON. …
- Sign #3: Your A/C or heater runs constantly and won’t turn OFF. …
- Sign #4: Room temperature and setting don’t match. …
- Step #1: Make sure thermostat is on the right setting.
How can I test my car thermostat without removing it?
How to Test a Car Thermostat Without Removing It
- Make sure your engine is cold. …
- Start the engine and let it run until the temperature gauge starts to move. …
- Stop the engine and feel the temperature of the top radiator hose.
- If your car’s thermostat is working correctly, the hose should feel cool.
How do I know if my thermostat is working properly?
The most common signs of a broken thermostat are:
- Thermostat display is off or is non-responsive.
- Turning on the heat or AC does nothing.
- The heat or AC will come on, but either stays on nonstop or cuts out before the temperature setting is reached.
How do I know if my coolant is circulating?
Start your car’s engine and allow it to idle. Look through the radiator filler neck to see if the coolant flows. At this time, it should not be flowing as your car has not reached the operating temperature to cause the thermostat to open. If you find the coolant is flowing, it means the thermostat valve is open.
Why is my car overheating but it has coolant in it?
Overheating car engines can be caused by: Water pump failure. The water pump isn’t circulating the engine coolant to remove excessive heat from inside. … A common cause of car overheating is a low-cost thermostat stuck closed, restricting coolant flow.
How do I check if my water pump is working?
If you suspect the water pump isn’t working, replace the radiator cap and, using a shop rag to prevent burning your hand, squeeze the upper radiator hose (the one going from the radiator to the engine). With a working water pump, you should feel the surge of coolant as you release the radiator hose.
Why is my Nissan Xterra overheating?
What are common reasons my Nissan Xterra overheats? While there are a variety of reasons your Nissan Xterra is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat.
How do I fix code p1217?
How is the P1217 code repair? Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.