1996 lincoln towncar. Changed radiator, used stop leak for intake manifold leak, replaced radiator fan and relay, removed thermostat completely, and waterpump is not leaking but the car still runs hot. Someone help please

Instructions

1. • 1 Place a large drain pan beneath the radiator drain on the passenger side of the Town Car. Open the hood and remove the radiator cap.
     
   • 2 Loosen the radiator drain plug using a wrench. Wait until the coolant is below the level of the upper radiator hose.
     
   • Sponsored Links
     
     • Slow Motion Video Download free software to slow down, speed up and edit videos.
       www.nchsoftware.com/videopad
   • 3 Trace the upper radiator hose to the thermostat housing. Loosen the hose clamp on the housing with a flat-blade screwdriver. Slide the clamp back and remove the hose from the housing. Use a wrench to remove the two mounting bolts from the thermostat housing.
     
   • 4 Slide the housing off of the intake manifold. Clean any remaining gasket pieces from the thermostat housing with a flat scraper and clean rag. Remove the old thermostat from the housing.
     
   • 5 Insert the new thermostat into the housing. Position the new gasket on the outer edge of the housing and position it over the mounting area on the intake manifold. Replace the two mounting bolts and tighten them using a wrench.
     
   • 6 Replace the upper radiator hose on the thermostat housing and tighten the hose clamp. Top off the radiator with a blend of equal parts antifreeze and distilled water. Replace the radiator cap.
     

Read more : http://www.ehow.com/how_6319041_change-1996-lincoln-town-car.html

Instructions

1. Removal

Unscrew the bolt that holds the negative connection to the Impala's battery. Set this bolt aside for later use.

Remove the engine cover to access the intake manifold and manifold gasket. Disconnect the throttle body inlet duct from the engine.

Twist off the radiator cap to allow draining of the coolant to flow more smoothly. Place an empty container beneath the radiator's drain plug, and remove this plug. Allow all of the engine coolant to drain into the empty container. Replace the drain plug once you are finished.

Tag all of the electrical wiring and hoses before removing so that reconnection is precise to factory settings. Remove these parts, individually, from the intake manifold.

Loosen the bolts that hold the intake manifold to the Impala's engine block. Lift the intake manifold from the block once all bolts have been completely removed.

Use the flat-head screwdriver to pry the old intake manifold gasket from the engine block. Discard this part once you have removed it.

Clean the engine block thoroughly with the engine degreaser and linen cloth. If necessary, use a gasket scraper to remove excess buildup and grime.

2. Installation

• Coat the top and bottom of the new intake manifold gasket with a chemical sealer so that it bonds to the engine block securely. Position this new manifold gasket so that it lines up perfectly with the cylinder ports of the Impala's engine block.

Place the old intake manifold on top of the newly-installed manifold gasket until it aligns with all of the holes of the cylinder flanges and manifold gasket.

Attach all of the bolts with your hand to the manifold. Once all bolts have been positioned, use a torque wrench and apply 15 foot-pounds of pressure to the bolts to secure the manifold into place.

Reconnect all of the necessary hoses and electrical wiring to the intake. Pour the engine coolant back into the radiator.

Reattach the engine cover on top of the intake manifold and engine block. Start the Impala's engine and check for any leaks around the new intake manifold gasket.

My first guess would be a vac leak around one of the gaskets, or a hose is disconnected. A leaking gasket could change with the engine temp.

Check this on 3.1L and 3.3L Engines

1. Disconnect the negative battery cable.
   
2. Drain the cooling system to a level below the thermostat housing.
   
3. Remove the air cleaner assembly.
   
4. Disconnect the surge tank line from the thermostat housing.
   
5. Remove thermostat housing-to-intake manifold attaching bolt and nut, then remove the housing.
   
6. Remove the thermostat.

To install:

1. Clean all gasket surfaces completely.
   
2. Insert the thermostat in the intake manifold.
   
3. Attach the thermostat housing to the intake manifold.
   
4. Install the mounting bolt and nut. Tighten to 18 ft. lbs. (25 Nm) for the 3.1L engine. For the 3.3L engine, tighten to 20 ft. lbs. (27 Nm).
   
5. Install the air cleaner assembly.
   
6. Connect the surge tank line to thermostat housing.
   
7. Refill the cooling system.
   
8. Connect the negative battery cable, remove the radiator cap, then start the engine. Allow the engine to run with radiator cap removed, until the upper radiator hose becomes hot (thermostat open). With the engine idling, add coolant to the radiator until the level is up to the bottom of the filler neck.
   
9. Install the radiator cap, making sure the arrows line up with the overflow tube.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

You're going to have to replace "thermostat housing" (adapter) They're made cheaply and break easily. When you buy replacement, most are cast iron. Don't forget new gasket.

answer , very carefully ...

drain coolant , remove and mark all vacuum lines , make a schematic to diagram your hose routing, disconnect and plug all fuel lines, remove distributor and mark location of rotor, disconnect battery, remove any necessary cables, brackets and or accesseries, remove intake mounting bolts, note length of bolts and reference location, pry up on intake , remove intake, scrape old gasket off , must be very clean to reinstall new gasket or you will cause a leak..

The thermostat is in the housing bolted to the intake that the upper radiator hose goes to. Check the Intake manifold for leaks, these are prone to cracking the Intake. Check the front crossover behind the alternator and check the rear where the heater hose is hooked.

The radiator cap is at the radiator where you refill the radiator with coolant. Unless it is leaking and you hear a hiss. It may not have anything wrong.Neither will the water pump.If the water pump is bad. It has a small hole that will make it start leaking .Check the engine for leaks at the intake or the water pump.You will know where it is leaking. When the thermostat was removed and hopefully replaced , did you bleed the system ? The system has to be bled to remove air pockets. Or the engine will overheat again. Also check that the radiator fan or fans is turning on . If not you may need to replace the temperature control sensor.(TPS)

If its the 3.1L it could be your intake manifold gasket , the material used for the gasket does not react well with GM's Dex-Cool antifreeze. The leak may not be apparent at first, but I would pressure test the cooling system. If you look at the front of the motor by the belts , try to peek down at the intake manifold and check for slight seapage to an obvious leak.

If its either of the Quad-4's they were notorious for heads warping or cracking.

1 Inspect Cooling System Mix Coolant level low or flow is restricted. 2 Inspect Belt Incorrectly routed, adjusted, tensioned, missing, or worn water pump belt(s). 3 Inspect Oil Pan Gasket - Performance Ruptured, cracked or leaking radiator hose. 4 Inspect Radiator Cap Worn or damaged radiator cap 5 Inspect Thermostat Thermostat stuck closed 6 Inspect Fan Blade Broken, missing, or defective fan blade(s). 8 Inspect Water Pump Damaged, worn or leaking water pump. 9 Inspect Intake Manifold Plenum - Perform Leaking water pump gasket. 10 Inspect Cooling Fan Control Faulty cooling fan control or circuit. 11 Inspect Cooling Fan Switch - Radiator Faulty radiator cooling fan switch or circuit. 12 Inspect Engine Temperature Sensor Faulty engine temperature sensor or circuit. 13 Inspect Temperature Switch Damaged or faulty temperature switch or temperature switch circuit. 14 Inspect Fan Clutch Worn, loose or faulty fan clutch. 15 Inspect Ported Vacuum Switch Damaged, leaking, or faulty ported vacuum switch. 16 Inspect Radiator Obstructed radiator core or radiator cooling fins. 17 Inspect Head Gasket - Performance Head gasket leaking coolant into cylinders