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Thermostat replacement in a 1998 toyota tacoma

Replace a thermostat

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You're going to lose some coolant, so have a bucket or other container ready. Follow the upper radiator hose to the point where it's connected to the engine. The hose is clamped to a metal housing which is bolted to the engine. Remove the bolts (not the hose) and lift the housing to expose the thermostat (may require a little prying with a screwdriver or similar tool). Note how the old thermostat is fitted (which end is up), lift it out of the engine, and then remove all traces of gasket from the housing and the engine. Install the new thermostat and gasket, replace the bolts, add coolant as necessary, and you're done.

Posted on Jan 04, 2010

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How do I replace thermostat?


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    Just be sure that you do this when your engine is completely cooled. Locate yourthermostat if you haven't already done so. Place a bucket under where you're going to be working. Remove the clamp. Pull off the hose. Remove the bolts that hold thethermostat housing in place and lift out the old thermostat.

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The engine coolant temperature sensor is usually located on the thermostat housing. This sensor controls the readings of the coolant temperature gauge in your vehicle when the ignition switch is ON .Here's a link to the sensor. REMOVAL & INSTALLATION

  1. Drain the coolant from the vehicle.
  2. Disconnect the engine wiring protector from the brackets.
  3. Disconnect the sensor wire.
  4. Using a 19mm deep socket, remove the sensor and gasket.
To install:
  1. Apply a thin coat of Loctite or equivalent to the switch. By hand, carefully thread the switch into the engine. If resistance is felt at all, remove the switch and inspect the threads for any damage. Continue to install the switch. Once installed, tighten to 14 ft. lbs. (20 Nm).
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  3. Install the engine wire protector to the brackets.
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http://www.autozone.com/engine-management/coolant-temperature-sensor/duralast-coolant-temperature-sensor/toyota/tacoma-2wd/1998/6-cylinders-n-3-4l-efi-dohc/61401_0_18589

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1. Allow car to cool.
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3. Remove the hose clamp and hose from thermostat housing.
4. Remove the two bolts holding the housing to engine.
5. Remove the thermostat gasket and clean the gasket completely off the engine and thermostat housing.
6. Remove the thermostat and replace with new.
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For more help and troubleshooting go through the help links below:---

Click the link below:-----





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