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Replacing a thermostat on 2004 nissan sentra - Sentra Nissan Cars & Trucks

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  • Prepare for the replacement by disconnecting the negative battery cable and draining the engine coolant into a container--you need to remove the drain plug from the radiator first and then the drain plug at the engine block.

  • Remove the engine's cooling fan by loosening the fan/water pump pulley nuts, unclipping and removing the fan shroud's lower half, removing the water pump pulley nuts and pulling the fan out from underneath.

    Disconnect all components blocking access to the thermostat by removing their bolts. On four-cylinder engines, this includes the air cleaner, air intake duct and the power steering pump's support bracket. On a 3.3 liter V6 or SOHC engine, remove the upper radiator hose from the intake manifold's coolant outlet.

  • Slip off the drive belts blocking the thermostat by turning their tensioner bolts with a wrench or breaker bar. On a 3.3 liter truck or DOHC engine, follow this by removing the upper idler pulley bracket. On a 3.5 liter engine, remove the water pump drain plug from the front end of the block.

  • Detach all hoses from the thermostat housing cover by loosening the hose clamps with pliers; this usually includes the lower radiator hose. This is only needed on V6 engines; you will keep the hose attached on a four-cylinder.

  • Remove the thermostat housing cover by removing its bolts. There will be some coolant spilling out when the gasket seal breaks.

  • Disconnect and remove the thermostat from its cover by removing its screws. Take note of how the thermostat is positioned within the cover.

  • Scrape away all traces of gasket or sealant from the housing and cover and clean the surfaces with lacquer thinner.

  • Apply RTV sealant around the edge of the thermostat cover. You need to re-install the cover within five minutes of applying this sealant.

  • Mount the new thermostat into the cover in the same position the old thermostat was in.

  • Re-install the thermostat cover and all other parts in reverse order of installation.

  • Wait a half hour for the RTV sealant to cure before refilling the engine coolant. Use fresh coolant if the old coolant is contaminated.

  • Posted on Mar 20, 2011


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    Posted on Jan 02, 2017

    • 17970 Answers

    SOURCE: How do I replace the thermostat in a 2001 Nissan

    WARNING Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure coolant escaping from the radiator.
    To remove and install thermostat, refer to illustration and water pump procedure.


    Fig. Exploded view of water pump and thermostat components-1.6L engine


    Fig. Exploded view of thermostat and components-1.8L engine


    Fig. Exploded view of thermostat and components-2.0L engine

    Removal & Install

    1. Before servicing the vehicle, refer to the Precautions Section.
    2. Drain the cooling system.
    3. Disconnect the negative battery cable.
    4. Remove the lower radiator hose.
    5. Remove the water inlet and take out the thermostat.
    6. To install perform the following:
      Install gum ring to thermostat Install thermostat with jiggle valve or air bleeder at upper side
    7. To complete installation, reverse remaining removal procedure.
    8. Fill the cooling system.
    9. After installation, run engine for a few minutes and check for leaks.

    Hope helped with this (remember rated this) Good luck.

    Posted on Nov 05, 2009

    • 1010 Answers

    SOURCE: thermostat

    Follow the bottom hose around the back of the engine and over to the passenger side. This hose ends up almost directly behind the front/top hose (where the thermostat should be...but that would be too easy). Unbolt 3 bolts holding the housing on, pop off the housing, and the thermostat should just pop right out.

    Posted on Jun 25, 2008

    • 1010 Answers

    SOURCE: 1996 nissan sentra

    Find the big hose that comes out of the top of the radiator and follow it to the engine and that is where the thermostat is located. My advice is to be sure to get a factory thermostat and rubber gasket as it makes installation much easier. I have done it both ways and the factory one is easier to install.

    Posted on Jun 29, 2008

    • 90 Answers

    SOURCE: brake light switch


    1. Twist and pull to remove switch.
    2. Pull up on brake pedal pad and hold.
    3. Insert switch into retainer until switch plunger is completely depressed.
    4. Turn the switch until it locks into place in the brake pedal bracket.
    When turning the switch to lock into place, the switch backs off the stopper to the correct clearance automatically.
    5. Release the brake pedal pad.


    Posted on Jul 23, 2008

    • 193 Answers

    SOURCE: the battery terminal is loose how do i replace it?

    You can cut off the end and replace it. The right ways is to replace cable. the first salution will get you by but will corroud after a while.

    Posted on Jul 21, 2009

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