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You were very helpful with my thermostat question. I just have one now on the issue.Before I put the housing together do I need to put sealant where the thermostat itself is sitting?? It kind of seems like it is just floating in there.

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  • Chevrolet Master
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THE GASKET AROUND THERMOSTAT DONT NEED SEALANT.BUT IF IT LOOKS CRACKED OR DAMAGE IN ANY WAY IT NEED REPLACING.

Posted on Jul 04, 2010

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1 Answer

Where is thermostate on a 3800????


  • On this car and engine size you will follow the top radiator hose to the thermostat housing. The thermostat is under the housing.


  1. 1. Lower the coolant.
  2. 2. Remove the two bolts to the housing.
  3. 3. Remove the old thermostat paying attention to the way it came out.
  4. 4. Clear off any old gasket and sealant that might have been used to seal the housing.
  5. 5. Install new thermostat.
  6. 6. Most new thermostats have a big o-ring which does not need a sealant. If not put a little sealant on the gasket and put the housing on.
  7. 7. Reverse to finish.
  8. 8. Make sure to burp any air out of the system and warm up the car with the defrost on until warm air blows. This is the indicator the thermostat is working.

  • See diagram below for a visual.


11_19_2011_11_46_55_pm.jpg

  • Hope this helps.

Nov 19, 2011 | 2006 Pontiac Grand Prix

1 Answer

Replacing the thermastat 2006 dodge grand caravan


You will need a new thermostat(make sure you have the gasket), ratchet, extension, sockets, screwdriver, scraper, coolant, and maybe gasket sealant. drain down the coolant below the top hose. follow the hose to the engine( this connects to the thermostat housing cover, or cap), disconnect the hose from the cap, and remove. you will see 2 bolts holding down the cap, and remove those( save them for later). now gently pry up the cap( the cap is made of cheap metal, and bends or cracks easily). you will see the old thermostat and remove. now you need to scrape the cap and housing clean of any old gasket material, and gasket sealant( if present, this way you have no leaks). now that you have just metal, now you take the gasket and soak a minute in clean water( to swell the gasket) and put the new thermostat in, and set the gasket down( if you don't want to do that, apply gasket sealant around the housing, set gasket in place, and apply sealant around the cap). now that the gasket is in place, place the cap on top. using those bolts you saved. re-bolt the the engine(CAUTION do not over tighten, just tight, the cap WILL break or crack). reconnect the hose, and add fluid. start the vehicle, and let warm up, when the thermostat opens, check for leaks. Now finish topping off the radiator, and you are done. Job takes about 30 to 45 minutes for a beginner. Hope this helps. please rate this if its helpful or not

Jan 25, 2011 | 2006 Dodge Grand Caravan

1 Answer

1997 diahatsu charade ltd overheating no water leaks ,no water in oil, hopefully could be thermostat, were is thermostat located?


open the car hood. look at the radiator, and then the top radiator hose. follow that hose to the engine. the hose connects to the thermostat housing cap. under that cap is the thermostat. here's what you need: ratchet, and sockets, flat-tip screwdriver, scraper, pliers, a new thermostat (any auto parts store), a new gasket, and some gasket sealant. Question, how old are hoses? if 3 years or old, let change those also. 2 new hose, 4 hose clamps, and some coolant. If we're changing hoses with this, lets start. drain the radiator, and remove the hard hose first, the bottom. now remove the top.hose, and lets start the thermostat. remove the bolts holding down the cap, and gently pry off the cap. flip the cap over, and scrape it clean to metal(we want NO leaks). now reach down and remove the thermostat, and lets scrape the housing clean to metal. place the new thermostat in the housing, and lets put a thin coat of gasket sealant on the housing. place the gasket on the sealant, and pick up the cap. apply a little gasket to the cap. place on top of the gasket, and bolt it down. now hook the hoses(if your changing them)and let sit 30 minutes for the gasket sealant set. after that, let add the coolant, and water. start the car, let it warm up. when the new thermostat opens, add more coolant as need to top it off. Hope this helps

Jan 03, 2011 | Daihatsu Charade Cars & Trucks

1 Answer

Car overheats.....even just idling and no heat coming inside, is there anything special i need to change thermostat?... and where is it located?


No, Just a ratchet and socket set, flat tip screwdriver, pair of pliers, thermostat, gasket scraper,hose clamps, and gasket sealant(if you want to use it). Question for you: How old are your hoses? 3 years or older? If so, might as well change them also. Remove the top hose( helps to have it all out of the way), Its metric, about a #12 or #13 socket to remove the bolts holding the thermostat housing cover off. Remove that (STOP) turn it over and clean it down to metal (want no leaks), remove the old thermostat, (STOP) and lets clean the block also (no leaks) down to metal. Replace the thermostat, apply a think coat of sealant, place the gasket, on the housing, apply a thin coat of sealant. Replace the housing. bolt back down, and replace the hose ( always use new clamps, safety first). Let is sit about 30 minutes, allow the sealant to set, start the car let it warm up, and then top off the radiator. (adding fluid when the engine is hot, will put it to the correct level. Hope this helps.

Jan 02, 2011 | 1999 Toyota Camry Solara

1 Answer

Overheating,how would change the thermostat


YOU NEED A HAYNES REPAIR MANUAL.BUT YOU DRAIN OUT SOME COOLANT DOWN ENOUGH WHEN YOU TAKE THERMOSTAT HOUSING OFF TO GET TO THERMOSTAT.ANTIFREEZE WONT GO EVERY WHERE.TO GET STARTED YOU HAVE TO REMOVE RADIATOR SUPPORT COVER.AND THE AIR FILTER HOUSING.LOOSEN THE HOSE CLAMP.THEN DETACH THE HOSE FROM THERMOSTAT HOUSING.THEN REMOVE THERMOSTAT COVER MOUNTING BOLTS THEN REMOVE HOUSING.BE PREPARED FOR SOME COOLANT TO SPILL WHEN YOU REMOVE HOUSING AND BREAK THE SEAL.BE SURE TO REMOVE ALL TRACES OF OLD GASKET MATERIAL AND OR SEALANT FROM HOUSING COVER.THEN INSTALL THE NEW THEERMOSTAT IN THE HOUSING WITHOUT USING SEALANT.MAKE SURE SPRING END IS DIRECTED INTO THE HOUSING.APPLY CLEAN ANTIFREEZE TO THE NEW O - RING ON THERMOSTAT FOR LUBRICATION BEFORE INSTALLATION.PUT EVERYTHING BACK VISA VERSA.TORQUE THERMOSTAT HOUSING BOLTS TO 89 INCH POUNDS.PUT HOSES TIGHTEN HOSE CLAMP.FILL UP THE COOLANT SYSTEM CRANK CAR CHECK FOR LEAKS.

Feb 16, 2010 | 1998 Cadillac DeVille

3 Answers

How to replace the thermostat on a 1989 GMC Sierra


Drain the coolant (left lower side of the radiator) Follow the upper radiator hose to the engine, at the end of the hose is a metal housing, held down with 2 bolts, or 1 bolt and 1 stud. There may be wires going to one of the bolts, be sure these go back on. After taking the 2 bolts out, lift up the housing and the thermostat will be right there. Clean the old gasket from the manifold and the water outlet housing. Now install the thermostat, then the gasket. and torque down the bolts evenly. about 25-30 ft pounds. fill the radiator until about 2 inches below the filler neck, and start the engine, now keep putting coolant in to keep it 2 inches below the radiator neck, and let it warm up until you see coolant moving in the radiator, now fill it to the top and fill the coolant bottle to the cold mark. Its a good time to replace the radiator cap also. Good Luck.

Jan 28, 2010 | 1989 GMC Sierra

2 Answers

How do you replace thermostat


Mr. Lakewood,
The thermostat is in the housing at the end of the top radiator hose where it connects to the engine manifold. The thermostat housing is clamped onto the hose and is bolted to the engine manifold by two bolts.
1. Drain enough coolant from the cooling system to a level below the height of the thermostat housing.
2. Remove the two bolts and separate the housing from the manifold.
3. Remove the thermostat from the engine. You may have to pry it out if it is stuck. (Don't be alarmed if there is no thermostat. Some mechanics remove them for troubleshooting).
4. Scrape off the old gasket and sealant from the housing and the manifold.
5. Install new thermostat, pointy side towards radiator.
6. Use Permatex #2 (non-hardening sealant) on both sides of the new gasket and bolt down the housing.
7. Replenish cooling system.
8. Start engine, allow to warm up and check for leaks.
9 *done*

The Permatex #2 gasket sealant ($4 AutoZone) is in a small tube. One small tube is more than enough.

Oct 01, 2009 | 1989 Cadillac Brougham

2 Answers

Iiiiiiihow to install thermostat for 1990 honda civic


Thermostat is located where the lower hose connects to the motor. Not the upper. Just follow the lower hose back to the engine, remove spring clamp, three 10 mil. nuts, and housing, therm has no gasket but o-ring seal instead.

Sep 17, 2009 | 1990 Honda Civic

1 Answer

I have 1997 dodge caravan. I think I need to replace the thermostat. Where is it located?


It is located at the end of the large top hose where it connects to the engine.
There are two bolts holding the thermostat housing.

Drain radiator enough so that there is no spill at that level.
Remove the housing, Remove thermostat and scrape off the old gasket and gasket sealant from the housing and engine manifold.

Replace thermostat (pointy side UP) and apply sealant to both sides of the gasket. (I prefer Permatex #2 - non-hardening sealant)

Hope this helps!

you might want to tell us what symptoms your cooling system is having...

Sep 15, 2009 | 1997 Dodge Caravan

1 Answer

Thermostat


sealant wont help if you cracked the housing by tigting it to much it also is suppose to have either an o-ring or gasket sealant is only used very sparingly

Jun 08, 2008 | 1987 Volkswagen Jetta

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