The housing gasket may be bad. Replace the gasket.
No just make sure that the engine is cool. take the radiator cap off MAKE SURE ENGINE IS COOL... then you can take the thermostat housing off and replace the gasket you might have to replace the thermostat as the gasket might be an O ring around the Thermostat and not bought separatly. after your done fill up with water.
intake manifold gasket is leaking. They are famous for it around 80000 miles
Heater core leaking?
I'm assuming you mean a 2.7L V6 because Chrysler doesn't put the 3.7L in that car. You've also got to be careful because a leak down there can be misleading. The weep hole for the water pump is right below the thermostat housing, and many times people mistake a leaking water pump for a leaking thermostat. If the leak your referring to is on the top of the engine in the front, that is actually what is called the water outlet housing. The thermostat is on the bottom left side of the engine. Many people believe the thermostat is on the top of the engine under the water outlet housing, which is not the case. But if your leak in question is on the top of the engine at that housing, you'd have to replace that housing...which may or may not come with the tube that runs under the intake manifold that goes to your heater hose. Hope this helps.
Thermostat replacementI received a quote for my 2000 Grand Prix 3.6 from the Chevrolet Dealer and it was around $300.00, for drain/fill antifreeze and removal/replacement of thermostat. I did my own for around $25.00, cost of thermostat, gasket and antifreeze. I took some short cuts and works fine just remember you have to bleed the air from the cooling system with the little screw on the top of the thermostat housing. If not the engine will over heat and you will have an air lock in the engine cooling system and it will lock-up.
The radiator hose is cracked near the clamp; or the clamp is loose; or the thermostat housing gasket is worn.
the thermostat is behind the alternator! gotta remove the alternator and most of the plugs around it to get to the bolts on the thermostat housing
Which filter housing? Air filter, oil filter, fuel filter?
i have never done a thermostat swap on a 96 jetta but i would assume it is about the same as any other vehicle as they appear to be pretty universal. just locate the thermostat housing which will be metal and usually in a bubble shap to give clearing for the thermostat. then carefully open the thermostat housing as not to damage it wich might cause leaking. remove the thermostat from the housing and be sure to remove all the rubbery sealer from around the inside of the housing. a putty knife usually does the trick well. then put a new seal in and the new thermostat and replace the housing over it. make sure everything is secure and start the vehicle. squeez the hoses while you're vehicle is running to make sure you have flow and the hoses are warm. check the housing for leaks. and make sure the vehicle isn't overheating.
first open the engine hood. second remove the plastic engine cover. third locate where the upper radiator hose connects to the engine block. fourth loosen the clamp on the hose. fifth wiggle hose back and forth as you are pulling it off the thermostat housing neck. sixth remove the two screws securing the thermostat housing and remove the neck. seventh remove thermostat and clean the area around the housing. once cleaned and dried reverse the procedure and top radiator with more antifreeze.
Under neath the alternator the are 4 ten or 6 mm in the housing and two pipes coming out of the housing where the thermostat in dont forget to replace the gasket around the housing
If water is coming out around the thermostat housing, the seal or gasket is bad.