Question about 1988 Oldsmobile Delta 88

1 Answer

Do I have to remove everything above the thermostat housing to replace the thermostat?

I have removed the one(1) bolt that holds the housing onto the block.Does it have to be rotated in order to get to the thermostat,or should it just be pryed up and out?

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  • Oldsmobile Master
  • 5,317 Answers

Wups, back up, sclatt-that housing should have two bolts (almost all do, some have three, but very seldom). The housing should pull straight off or up, wherever it's situated on the engine, exposing the thermostat, which you then remove from the engine block. Again, just lift it out. Take careful note of how everything came apart, so you can put it back right (like the gasket, parts removed, the seating of the thermostat, etc.).
Ease of access is the key to whether you have to remove or set aside anything in the way of replacing the thermostat. The housing should come right off once the retaining bolts are removed. If it's stuck with old gasket sealer or corrosion, just tap it lightly till freed. Putting it back together is where you need ease of access-you want the gasket to stay in place, the thermostat to stay in its place, the retaining bolts to be easily reached and torqued down to specs. If you don't have a torque wrench, or unable to borrow one, snug them down evenly, and then just past snug by a hair-about 20-23 ft.lbs is what I'm trying to say.
I hope this helps you. Good luck.

Posted on Feb 19, 2012

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SOURCE: One bolt thermostat housing. How do I get the housing off?

remove the other bolt from the thermostat housing and remove the housing. My fear at this point would be that by removing intake manifold bolts and wiggling the manifold you may have damaged the intake manifold gasket set, which is a much more indepth repair

Posted on Nov 27, 2008

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1 Answer

Where is the thermostat located & how to replace it ?


Follow the top radiator hose to the engine. The thermostat will be in that area (usually connected to the hose..)

26022036-1nupyibathm30i022zdl4zhz-3-0.jpeg Remove the radiator hose and then undo the bolts that hold the thermostat housing onto the engine.


26022036-1nupyibathm30i022zdl4zhz-3-1.jpeg

26022036-1nupyibathm30i022zdl4zhz-3-3.jpeg The thermostat housing will have either 2 or 3 bolts, depending on what type of vehicle you have.
Simply prise off the housing and remove the thermostat.



26022036-1nupyibathm30i022zdl4zhz-3-6.jpeg This is what the thermostat will look like. It only fits one way.
Prior to replacing the thermostat clean the housing and mating faces where it bolts onto the engine. You will need to replace the small gasket (which should be supplied with a new thermostat).

You can also use sealant - available from car shops.

Dec 25, 2015 | Cars & Trucks

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Need to replace the themostat


  • Remove the bolts that hold the thermostat housing onto the intake manifold of the MR2 with an adjustable wrench and pull up on the thermostat housing to remove it from the intake. The housing is still connected to the hose. Lift the thermostat housing and the hose up to drain the antifreeze back into the radiator.
  • 2 Remove the old thermostat from the hole inside of the intake manifold and replace it with a new one. Pull the thermostat gasket off of the top of the intake manifold and wipe the manifold clean with a towel.
  • 3 Place a bead of RTV gasket maker around the bottom edge of the thermostat housing and allow it to dry for 15 minutes. Place the thermostat housing back onto the intake manifold and bolt the housing back into place. Allow 15 more minutes of drying time and slightly tighten the bolts again. This will form a solid seal between the intake manifold and the thermostat housing.



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    1 Answer

    Looking for thermostat


    Should be in the housing at the engine end of the upper radiator hose.
    Drain the coolant, remove the upper hose, then look for a couple of bolts that hold the housing onto the engine. Remove those bolts and the housing should come off. There may be a small bypass hose (about one inch diameter, three to six inches long) that is also attached to the housing, if so, remove it also.
    Remove the old thermostat and gasket, install the new one, put everything back together and refill the coolant.
    You might want to drain all the coolant and replace it, if it is time for new coolant, otherwise save the old coolant and put it back in, unless it looks rusty or otherwise bad.

    Coolant should be disposed of properly, do not pour it down a storm drain. Some cities allow it in sanitary sewer, some don't. Call your city's waste services.

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