Thermostat housing can the housing on the block side of the thermostat housing be fixed

You need to partially drain the cooling system. THe thermostat housing is located on the driver side of the engine block above the transmission bell-housing. Just follow the big radiator hose on the driver side and it will lead you to the housing.THere are the radiator hose,two heater hoses, and another hose leading to the surge tank that you will need to remove from the housing. 3 bolts secure the housing to the block- remove these bolts and remove the housing. You can now remove and replace the thermostat and install a new gasket- i would recommend coating the gasket in SIL-Glyde or Vaseline. Torque the bolts to 89inlb, re connect the hoses. Refill cooling system with antifreeze and burp all the air out.

drain coolant until its below the thermostat.then remove two thermostat housing bolts.remove thermostat housing and thermostat.make note position of thermostat before removing it.then carefully clean all old gasket material from thermostat housing and cylinder block you can buy can gasket remover at any auto parts stores.buy new thermostat gasket.if you have the paper type you need to buy RTV SILICONE to help seal gasket if you have rubber type gasket you dont need RTV SILICONE.make sure both surfaces are clean.then install new thermostat and new gasket.if you have paper type gasket apply thin 1/16 coat RTV SILICONE both sides thermostat gasket.then install gasket to thermostat housing then install housing to cylinder block first make sure new thermostat in place before installing thermostat housing. let RTV silicone sit up about hour before adding coolant.IF THERMOSTAT HAS THE O RING SEAL DONT NEED RTV SILICONE AND THE PAPER GASKET.

1. • 1 Pop the hood and locate the thermostat. It's on the passenger side of the engine and has a plug leading into it.
     
   • 2 Unplug the thermostat housing from the engine block using the 3/8-inch ratchet and socket set. The housing will come off in your hand and then you can pull out the old thermostat.
     
   • 3 Scrape off the engine block and the thermostat housing's mounting surfaces with the gasket scraper. This is to ensure the replacement gasket seals correctly.
     
   • 4 Place the replacement thermostat into the engine block and place the gasket over the ends of the bolts in the thermostat housing to keep them aligned.
     
   • 5 Bolt the thermostat housing into the engine block using the 3/8-inch ratchet and socket set.
     

Read more: How to Change the Thermostat on a PT Cruiser ' eHow.com http://www.ehow.com/how_5643178_change-thermostat-pt-cruiser.html#ixzz1g9B0K8Go

Locate upper radiator hose.

It will attach to the top or front of your engine block via thermostat housing.

Remove hose from thermostat housing,catch coolent accordingly. Then remove thermostat housing, usually two or three bolts. If housing does not come off easy you may try an jiggle it loose, if no luck get a flathead and pry it off, there may be a thermostat housing gasket, or possibly simple RTV silicone gasket maker. Once housing is off pull thermostat out. Noting it's position, mostthermostats have a small dimple of hole indicating upwards position.

Once removed use razor blade to remove old gasket and or RTV.

If it's a paper gasket, buy a new gasket with your new thermostat. (some thermostats come with gaskets, others dont). Also while at the parts store pick up a tube of silicone RTV black gasket maker.

Now! Once everything is cleaned, mock up the gasket with the housing so you know proper placement. open gasket maker, lay a 2mm bead (read packaging to confirm bead) along the gasket on bock sides leaving no open parts, leave the bead, don't spread it around with your finger.

Ok now put thermostat in block, then gasket and housing. Try and install it one swift motion without making a mess. You do not want that RTV to leak out the sides and be all messy!

Torque both housing bolts to factory spec. I you don't know spec call autozone, or just tighten them to your liking. Not to tight.

Crack open a miller light and wait for RTV to set up. When set up( again read packaging) then install radiator hose. And clamp it down, not to tight, the clamp may puncture the hose if swollen or old.

Now, tour good to go, but you may need to bleed air out the system, I suggest taking it to a jiffy lube or shop n asking them to do it real quick, or just ask another question on here and I'll explain!

Good luck.

Hello kingsgo,

The P0128 is a code for the thermostat, it is common.

The ECM will set this code when the time it takes the engine to reach 176 degrees is out of the range that the ECM expects.

The fix is to replace the thermostat. Follow the steps below for removal and replacement.

1. Drain the necessary coolant from the radiator to be below the the thermostat housing.

2. Remove the alternator.

3. Loosen the hose clamp at the thermostat housing see 1 in figure below then remove the hose.


4. remove the thermostat housing bolts. See image below.



5. Remove thermostat housing from engine block.

6. Clean the engine block sealing surface.

The new thermostat will come with the complete housing assembly.

To install reverse above procedure, torque the thermostat housing bolts to 89 inch lbs.and fill coolant to the proper level and check for leeks.

I hope this helps.

Regards,

netvan

Hi, remove the cap from the top of radiator and set aside. Locate thermostat housing on side of engine block. When you are standing in front of the truck, looking at the engine, the thermostat should be on the side of the motor block near the right front.

1

Park the car on a level surface, turn off the engine and let the engine cool a minimum of 2 hours before beginning to remove and replace the thermostat.

2

Place the bucket under the driver's side corner of the radiator beneath the radiator draincock (located on the bottom of the radiator). Remove the filler cap from the radiator.

3

Shape a large piece of aluminum foil to form a funnel or channel from beneath the draincock to the bucket, Pinch high side walls in the aluminum foil so it will direct the flowing coolant into the bucket and not allow any to spill on the ground or into the engine.

4

Turn the draincock clockwise to open it and drain the coolant from your radiator and hoses. Close the draincock when you have finished draining the system.

5

Locate the thermostat housing. The housing will be on the top of the engine; you can find it easily no matter what model year Saturn you have, by following the main hose coming from the radiator to the engine block. That hose will end at the thermostat housing and there will be one or two houses coming off the housing as well. Disconnect the hoses from the housing.

6

Using your socket set, remove the bolts holding the thermostat housing in place. Put the tip of your paint scraper between the housing and the engine block and pry up gently to remove the housing. Once the housing is free, remove the gasket that was between the housing and the block. If necessary, use the paint scraper to scrape off any old gasket that is stuck to the metal.

7

Pull the old thermostat from its seat. The thermostat has a circular steel top with what looks like a raised handle. Simply lift the old thermostat out and place the new one into position.

8

Lay your new thermostat housing gasket into place and re-install the housing. Tighten the bolts down. Re-connect the hoses and refill your radiator with new coolan

MOST NEWER VECHICLE THERMOSTATS HAS A O-RING ON THERMOSTAT.DONT NEED GASKET. IF YOUR VECHICLE HAS PAPER TYPE GASKET.PUT A SEALER ON BOTH SIDES OF GASKET.THE GASKET ATTACHED TO HOUSING THEN TO ENGINE BLOCK.

JUST DRAIN COOLANT LEVEL BELOW THE THERMOSTAT. CATCH COOLANT IN A DRAIN PAN UNDER RADIATOR.THEN REMOVE RADIATOR HOSE FROM THERMOSTAT HOUSING ON THE CYLINDER BLOCK.THEN REMOVE THERMOSTAT HOUSING AND THERMOSTAT.CLEAN THERMOSTAT HOUSING SURFACE AND THERMOSTAT HOUSING SEALING SURFACE ON CYLINDER HEAD.INSTALL NEW THERMOSTAT IN PLACE,MAKE SURE THERMOSTAT AIR BLEED HOLE FACING LEFT SIDE UPWARD ON THE ENGINE.SOME THERMOSTAT HAS TOP STAMPED ON IT.MEANING MUST BE FACING UP.WHEN THERMOSTAT IN PLACE.TAKE NEW THERMOSTAT GASKET.PUT SEALER ON BOTH SIDES OF GASKET.THEN.PUT GASKET ON THERMOSTAT HOUSING.THEN PUT HOUSING IN PLACE TORQUE HOUSING BOLTS 16 - 20 FT LBS.WAIT 1 HOUR UNTIL GASKET SEALER CURE.THEN FILL UP COOLANT SYSTEM.BLEED COOLANT SYSTEM AND CHECK FOR LEAKS.

Your thermostat is located under a metal housing on the top of the engine. The upper radiator hose connects to this housing. To change the thermostat you basically need to drain the radiator after your engine is cold, disconnect the upper radiator hose from the engine, and remove the bolts from the small housing. replace the thermostat, and clean the surfaces on both sides and replace the gasket too. reinstall the housing, attach the hose, and refill the radiator. start the engine, warm it up and check for leaks, then re check the coolant level after the engine cools off again.
Here's a link to a good article on replacing your thermostat...
http://www.automedia.com/Keep_Your_Eye_on_the_Thermostat/ccr20041201th/1