Hose coming out of thermostat

bypass heater hose

Fairly easy to change a thermostat. 1st Find the large hose that comes from the top of your radiator and runs to your engine. It will be clamped onto a metal tube, that metal tube will be bolted on to the engine with 2 or 3 bolts. You are going to have to remove those bolts and the thermostat will be inside that housing. You have to have a cool engine before you begin. DO NOT try when the vehicle is hot at all. Also some ppl would tell you to drain the coolant but I never have and I have changed a lot of thermostats with no mess so I wouldn't worry bout it. Anyway just remove the old therm put ur new 1 in and your new gasket and re-install the housing and the hose with clamp and your good to go. Hope I could be of some help to you.

there is a small metal radiator, called a heater core, which sits inside the car. air is blown over it to provide heat inside the car. it is connected to the cooling jacket of the engine by two rubber hoses, one to bring hot coolant in and the other to return warm coolant back. either you have a leak in the core or a heater hose, from your description i cannot tell which. if it is a hose it will be a very cheap part to replace and a short bit of labor. if it is the core it will be much more expensive. i would find someone who knows the difference to take a look at it, probably not a good idea to drive it in its current condition. if it is a bad core, a short pipe can be put in place between the hoses to take the place of the leaking core until you can get it fixed. abot 90% of all the jeeps i ever rode in had this as a permanent fix for a leaking core but it is very cold in the winter.

Check this procedure for...
2.7L Engine

1. Disconnect negative cable.
   CAUTION Do not remove pressure cap with the system hot and under pressure because serious burns from coolant can occur.
2. Drain cooling system.
   
3. Remove radiator lower hose from thermostat housing.
   
4. Remove nuts from heater tube flange studs.
   
5. Loosen starter bolt at heater tube bracket.
   
6. Pull heater tube out of thermostat housing and position out of the way.
   
7. Remove bolt and two studs.
   
8. Remove thermostat housing, O-ring and thermostat.
   
9. Remove thermostat housing bolts.

To install:

1. Clean gasket sealing surfaces.
   NOTE Install thermostat with the bleed valve located at the 12 o'clock position, between tabs on seal.
2. Install thermostat and seal into thermostat housing .
   
3. If removed, install two studs.
   
4. Install thermostat, thermostat housing and O-ring and bolt. Tighten attaching bolts to 105 inch lbs.(12 Nm).
   
5. Lubricate new heater return tube O-ring with coolant.
   
6. Position heater return tube flange over two studs. Install nuts.
   
7. Tighten retaining nuts to 53 inch lbs.(6 Nm).
   
8. Tighten starter bolt to 40 ft. lbs. (54.3 Nm).
   
9. Connect the lower radiator hose to the thermostat housing. Install hose clamps.
   
10. Refill cooling system.
    
11. Inspect for leaks.
    
12. Connect negative cable.

3.2L & 3.5L Engines

1. Disconnect negative cable.
   CAUTION Do not remove pressure cap with the system hot and under pressure because serious burns from coolant can occur.
   
2. Drain cooling system.
   
3. Raise vehicle on hoist.
   
4. Disconnect electrical connectors from engine oil and power steering pressure switches.
   
5. Disconnect radiator and heater hoses from thermostat housing.
   
6. Remove thermostat housing bolts.
   
7. Remove housing, thermostat, and gasket.
   NOTE The OEM thermostat is staked in place at the factory. To ensure proper seating of replacement thermostat, carefully remove the bulged metal from the thermostat housing using a suitable hand held grinder. It is not necessary to restake the replacement thermostat into the thermostat housing.

To install:

1. Position gasket on thermostat and housing.
   
2. Install thermostat housing, gasket and mounting bolts onto block. Tighten attaching bolts to 105 inch lbs. (12 Nm).
   
3. Install radiator hose.
   
4. Install bypass hose.
   
5. Connect electrical connectors from engine oil and power steering pressure switches.
   
6. Connect negative cable.
   
7. Fill cooling system.
   
8. Inspect for leaks.
   
9. Lower vehicle on hoist.

Hope helps (remember to rate and comment thius answer).

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.

There are two lines coming out of the back of the power steering pump. One is the high pressure line and threaded into the pump. The other is the return line, and has a metal tube coming out of the back of the pump. There should be a short rubber hose connecting this tube with another metal line that goes to the steering box. There are two metal lines threaded into the top of the steering box. The steering box is located at the end of the steering column and is bolted to the drivers side frame rail at the front of the vehicle. You will have to remove the left front tire to access these fittings. The rubber hose will be attached with hose clamps and are prone to leak. To tighten the threaded fittings, you will need a 16mm open end wrench, or preferably a flare nut wrench of the same size.

This is for the 2.7L:

2.7L Engine

1. Disconnect negative cable.
   
   CAUTION

   Do not remove pressure cap with the system hot and under pressure because serious burns from coolant can occur.
   
   

2. Drain cooling system.
   
3. Remove radiator lower hose from thermostat housing.
   
4. Remove nuts from heater tube flange studs.
   
5. Loosen starter bolt at heater tube bracket.
   
6. Pull heater tube out of thermostat housing and position out of the way.
   
7. Remove bolt and two studs.
   
8. Remove thermostat housing, O-ring and thermostat.
   
9. Remove thermostat housing bolts.
   

To install:

1. Clean gasket sealing surfaces.
   
   NOTE

   Install thermostat with the bleed valve located at the 12 o'clock position, between tabs on seal.
   
   

2. Install thermostat and seal into thermostat housing .
   
3. If removed, install two studs.
   
4. Install thermostat, thermostat housing and O-ring and bolt. Tighten attaching bolts to 105 inch lbs.(12 Nm).
   
5. Lubricate new heater return tube O-ring with coolant.
   
6. Position heater return tube flange over two studs. Install nuts.
   
7. Tighten retaining nuts to 53 inch lbs.(6 Nm).
   
8. Tighten starter bolt to 40 ft. lbs. (54.3 Nm).
   
9. Connect the lower radiator hose to the thermostat housing. Install hose clamps.
   
10. Refill cooling system.
    
11. Inspect for leaks.
    
12. Connect negative cable.
    

This is for the 3.2L and the 3.5L:

3.2L & 3.5L Engines

1. Disconnect negative cable.
   
   CAUTION

   Do not remove pressure cap with the system hot and under pressure because serious burns from coolant can occur.
   
   

2. Drain cooling system.
   
3. Raise vehicle on hoist.
   
4. Disconnect electrical connectors from engine oil and power steering pressure switches.
   
5. Disconnect radiator and heater hoses from thermostat housing.
   
6. Remove thermostat housing bolts.
   
7. Remove housing, thermostat, and gasket.
   
   NOTE

   The OEM thermostat is staked in place at the factory. To ensure proper seating of replacement thermostat, carefully remove the bulged metal from the thermostat housing using a suitable hand held grinder. It is not necessary to restake the replacement thermostat into the thermostat housing.
   
   

To install:

1. Position gasket on thermostat and housing.
   
2. Install thermostat housing, gasket and mounting bolts onto block. Tighten attaching bolts to 105 inch lbs. (12 Nm).
   
3. Install radiator hose.
   
4. Install bypass hose.
   
5. Connect electrical connectors from engine oil and power steering pressure switches.
   
6. Connect negative cable.
   
7. Fill cooling system.
   
8. Inspect for leaks.
   
9. Lower vehicle on hoist.
   

Plastic water by-pass tube.There may be 2 of them on the assembly they go into.To change you must remove the metal assembly on the front of the motor that the by-pass tube goes into.

1. drain coolant
2. remove engine cover
3. remove the 2 bolts from water hose connection (upper rad hose connecting to)
4. remove o-ring and thermostat
5. repeat in reverse order

First, plastic tube may be the overflow vent from the coolant bottle.Check to see where the attached end goes. You are going to have to check engine for coolant leaks (carefully refill system without spilling anything, then look for dripping anywhere. Look for leaks from all hoses, fittings radiator, water pump etc) After checking for leaks, start it up and check again (watch where you put your hands though) While running, check that the fan comes on when the vehicle reaches operating temp.(no fan, check fan motor, sensor & relay) Turn the heat on (does it have heat?) Check temp of lower hose and upper hose. If overheat happens, is lower hose still cold? (likely bad thermostat). If you found a leak, replace whatever is leaking...best insurance is to change thermostat after any overheat. Last, is there any white smoke from tailpipe, does engine run rough? If so, could be a failed head gasket or crack in cylinder head. (at this point last thing to worry about unless there is excessive smoke or rough run or oil in radiator or coolant in oil).