Thermostat?

Is the engine running at a normal operating temp? Also, with the engine hot, running, and the heater on high, do both heater core hoses are hot?

this guide will help walk you through the steps of changing the thermostat with diagrams below to show you how on your car.

https://www.2carpros.com/articles/replace-thermostat

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Follow the upper radiator hose to the engine. where it connects is the thermostat housing on the intake manifold. Here is a guide that will walk you through the repair with instructions in the diagrams below to show you how on your car.

https://www.2carpros.com/articles/replace-thermostat

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

HI there,

Thank you for the donation.

The first thing to remember is that when the engine is turned off it becomes a heat sink and the cooling system naturally rises in temp, many European cars have fans that will activate with the ignition off and often you will hear them cycle when the car is off. I would get the radiator cleaned & flow tested by a radiator repairer, check that there is no excess build up of leaf litter around the base core of the radiator restricting air flow and check that cooling fans are drawing good air.

Mark (mhpautos)

Easy way out is to press the "Recirculate" button. The proper way is to perform cooling system flush to remove build up and sludge from the heater core. And make sure to refill with 50/50 mixture of coolant/distilled water, not tap water.

It is located on the passenger side of the radiator near the bottom edge, on the engine side. You might have a small black rubber hose coming off of the area of the drain. The drain is plastic and should look kind of like a wing nut. You also get the best access to it from inside the wheel well by removing the pastic fender well cover.

Engine Coolant Thermostat Replacement (4.3 L)
Removal Procedure
Partially drain the cooling system. Refer to Cooling System Draining and Filling .
Remove the air cleaner outlet duct. Air Cleaner Outlet Resonator Replacement in Engine Controls - 4.3 L.

Remove the throttle body bracket nuts and reposition the bracket.

Remove the water outlet housing mounting bolts.

Remove the water outlet housing from the lower intake manifold and set aside.
Remove the gasket or O-ring.

Remove the thermostat.
Clean all the sealing surfaces of the water outlet housing.
Clean the sealing surface on the lower intake manifold.
Installation Procedure

Important: In order to prevent leakage, thoroughly clean all parts and sealing surfaces.

Install the thermostat.

Install a new gasket or O-ring.
Install the water outlet housing to the lower intake manifold.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Install the water outlet housing mounting bolts.
Tighten
Tighten water outlet housing mounting bolts to 19 NÂ m (14 lb ft).

Install the throttle body bracket to the throttle body.
Install the throttle body bracket nuts.
Tighten
Tighten the throttle body bracket nuts to 10 NÂ m (89 in lb).

Fill the cooling system. Refer to Cooling System Draining and Filling .
Inspect for coollant leaks.

You just need to look at it closer. It could be a hose problem, leaking water pump or bad radiator. Use a pressure tester when examining it.

Drain the cooling system. Locate the upper radiator hose. Disconnet it. Remove the 2 bolts securing the thermostat housing. Remove thermostat. Install new thermostat, clean housing and reinstall all the rest. Fill cooling system and verify repair. Let me know if you need more help.

Im am almost positive it is located where the upper radiator hose hooks to the engine.

What it hooks too is the thermostat housing, there should be 2 or 3 bolts holding it on, unbolt that and you should see the thermostat.

Removal Procedure

1.Remove the necessary coolant from the radiator. Refer to Draining and Filling Cooling System.
2.Remove the air outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
3.Remove the throttle body bracket. Refer to Throttle Body Assembly Replacement.
4.Remove the thermostat housing mounting bolts.

5.Remove the thermostat housing from the lower intake manifold and set aside.
6.Remove the gasket or O ring.

7.Remove the coolant thermostat.
8.Clean all the sealing surfaces of the coolant outlet.
9.Clean the sealing surface on the lower intake manifold.

Installation Procedure

Important: In order to prevent leakage, thoroughly clean all parts and sealing surfaces.

1.Install the coolant thermostat.

2.Install a new gasket or O ring.
3.Place the thermostat housing on the lower intake manifold. Ensure the gasket or O ring is in correct position.

Notice: Refer to Fastener Notice in Service Precautions.

4.Install the thermostat housing mounting bolts.
*Tighten thermostat housing mounting bolts to 19 Nm (14 ft. lbs.) .
5.Install the throttle body bracket. Refer to Throttle Body Assembly Replacement.
6.Fill the cooling system with specified coolant and concentration. Refer to Draining and Filling Cooling System.
7.Install the air outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
8.Inspect all sealing surfaces for leaks after starting the engine. Refer to Cooling System Leak Testing (On-Vehicle) or Cooling System Leak Testing (Off-Vehicle).