I have a 1995 toyota celica. i'v just changed the water pump new radiator and couple ov hoses. i;v noticed oil in the radiator and over heats the engine. i'v flushed engine out but oil has come back into the radiator and water expansion tank. is there any seal that could be damaged or has the head gasket gone ? many thanks richt
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Have you checked the engine temperature when the gauge shows fully high if it is true message and not lying and the problem is the temperature gauge? Since this happened stop the car open the bonnet touch the radiator hoses and even with off running engine touch the vents of the radiator to all surface and see it the temperature is everywhere the same.
If they're ballooning then your water pump is bad, but if they are shrinking like they're under vacuum, something is clogged. Pull the radiator hoses off after draining your anti freeze and run a hose to the top inlet. If water comes back out the inlet and has a poor flow it's clogged. The water should be capable of flowing right through.
Drain the cooling system. Place a waste oil collection
pan underneath the petcock valve on the lower corner of the radiator.
Open the petcock valve to drain the system.
Remove the bolts that connect the fan shroud to the radiator core and remove the fan shroud.
Loosen the alternator adjustment bolt and slide the alternator toward the engine. Remove the drive belt.
Loosen the adjustment bolt for the air conditioning
compressor, and slide the compressor toward the engine. Remove the drive
Loosen the adjustment bolt on the power steering pump and slide the pump toward the engine. Remove the drive belt.
Removal of the Water Pump
Disconnect the bypass hose from the water pump by loosening the hose clamp and pulling the hose off the fitting.
Remove the bolts that connect the water pump to the engine block, and remove the water pump and engine fan as an assembly.
Remove the four retaining nuts that connect the fan
assembly to the water pump. They will be located between the fluid
coupling and the water pump pulley.
Installation of the Water Pump
Attach the fan assembly to the new water pump by sliding
the pulley then the fluid coupling onto the water pump and reinstalling
the retaining nuts.
Clean any old gasket material off the water pump mounting surface on the engine block.
Place the new water pump gasket on the water pump mounting surface.
Slide the new water pump into position and reinstall the mounting bolts.
Reconnect the bypass hose by sliding the hose over the fitting and tightening the hose clamp.
Reinstalling the Drive Belts and Fan Shroud
Reinstall the the drive belts for the power steering
pump, air conditioning compressor and alternator. Tighten the adjusting
Measure the deflection of each belt to make sure the
belts are properly tightened. Measure deflection by placing a straight
edge along the belt against the accessory pulley and the water pump
pulley. Push down on the belt and measure the distance between the belt
at the midpoint and the straight edge. It should be between 1/2 and 1/4
inch. Any more and the belt needs to be tightened. Loosen the adjustment
and slide the accessory away from the engine to tighten.
Drop the fan shroud into position and reinstall the bolts that secure it to the radiator.
Close the petcock valve on the radiator and fill the cooling system with fresh coolant.
Start vechile, let it warm up, turn on heater, is there heat from the heater?
No? You need to bleed the system better. Jack the front of the car up, remove radiator cap, while throttle is increased add more coolant, then with throttle still increased put radiator cap back on and release throttle. Is there now heat?
Toyota Celica, Corolla, ECHO & MR2 1999-05Toyota Celica, Corolla, ECHO & MR2 1999-05 2002 Toyota Celica 1.8L MFI DOHC 4cyl
The thermostat is located in the water inlet housing that is connected to the lower radiator hose. The thermostat is equipped with a by-pass valve. If the engine tends
to overheat, removal of the thermostat would cause a decrease in
cooling system efficiency.
CAUTIONNEVER drain coolant directly onto the ground! NEVER open, service
or drain the radiator or cooling system when hot; serious burns can
occur from the steam and hot coolant. Also, when draining engine
coolant, keep in mind that cats and dogs are attracted to ethylene
glycol antifreeze and could drink any that is left in an uncovered
container or in puddles on the ground. This will prove fatal in
sufficient quantities. Always drain coolant into a sealable container.
Coolant should be reused unless it is contaminated or is several years
Fig. The oil filter must be removed to access the thermostat on the 5S-FE engine
Position a suitable drain pan under the radiator drain **** and drain the cooling system.
On the 7A-FE engine disconnect the engine coolant temperature switch harness from the water inlet housing.
Fig. Disconnect the engine coolant temperature switch wiring located on the side of the thermostat housing
Remove the oil filter on 5S-FE engines.
Loosen the hose clamp and disconnect the lower radiator hose from the water inlet housing.
Fig. Loosen the radiator hose clamp ...
Fig. ... then slide the hose off the thermostat housing
Remove the two nuts from the water inlet housing and remove the housing from the water pump studs.
Fig. Only two nuts hold the housing to the cylinder head
Fig. Pull the housing straight out to remove
Remove the thermostat and rubber O-ring gasket from the water inlet housing.
Fig. Then pull the thermostat and gasket out
Fig. Sometimes the gasket is stuck and has to be pried out of the head To install:
Make sure all the gasket surfaces are clean. Clean the inside of the inlet housing and the radiator hose connection with a rag.
Install the new rubber O-ring gasket onto the thermostat. On
5S-FE engines, align the jiggle valve with the upper side of the stud
bolt. Insert the thermostat into the housing.
Fig. Only use the correct temperature range thermostat when for replacement
Fig. Align the jiggle valve within a 10°gap of the stud bolt-7A-FE engine
Fig. Align the jiggle valve within a 5°gap of the stud bolt-5S-FE engine
Position the water inlet housing with the thermostat over the
studs on the water pump and install the two nuts. Tighten the two nuts
to 78-82 inch lbs. (9-10 Nm).
Don't forget to install a new O-ring onto the water inlet pipe. Apply soapy water to the O-ring prior to installation.
Connect the lower radiator hose to the inlet housing and install the hose clamp.
Attach the water temperature switch connector.
Install the oil filter and check the oil level if removed.
Fill the cooling system with a good brand of ethylene glycol based coolant.
Start the engine and inspect for leaks.
Remove the right hand cover under the engine.
Drain the engine coolant.
Remove the fan and generator V belt.
Remove the generator assembly
Remove the water inlet via the two nuts.
Remove the thermostat.
Install a new gasket onto the thermostat.
Install the thermostat with the jiggle valve upward. It can be set within 10 degrees on either side of the prescribed position.
Install the water inlet via the two nuts. Torque to 8 ft. lbs. (11 Nm).
Install the generator assembly.
Add engine coolant.
Inspect for leaks.
Replace the cover under the engine.
I hope help you with this (remember rated this help) Good luck.
Look along the radiator hose where it enters the engine. This controls the water temperature.
Toyota Celica Thermal Fan Switch
The Toyota Celica thermal radiator fan switch is usually located in the radiator or the engine block and has 2 or 3 wires coming from the unit. The 3 wire switch has a dual sensor for dual speed radiator fans. The Toyota Celica thermo fan switches come in the factory temperature settings and also come in cooler thermostatic settings so the fan will come on at a lower coolant temp.
The Toyota Celica cooling system is made of aluminum components and requires a Phosphate free coolant. DO NOT PUT an over the counter antifreeze in your Toyota Celica, as it will ruin the radiator and water pump.