Question about 1992 Volkswagen Passat

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Have just had fitted a coolant housing, for my 1990 2 litre passat, where abouts can i see this

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Hi you should see the housing at the right hand side of the engine it will be a cast housing with bout 3 rubber pipes coming off it . it also where your thermostat is housed.just above your gearbox

Posted on Sep 03, 2010


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1 Answer

Where is the thermostat for 2004 volkswagen passat 2.8l 6cyl located on the car?

The thermostat housing is to the right side of the engine, mounted under the coil pack location. Look for the coolant hoses going into the housing with the 3 temp sensor harnesses in the front of it. That whole assembly is the thermostat housing. The thermostat itself is inside of it.

If you plan to do this yourself, I suggest removing the battery (for better access) and drain the coolant before you pull the thermostat housing off. Be aware that the housing is plastic and it will need replacing if it is cracked or damaged during removal.


Jan 29, 2011 | 2004 Volkswagen Passat

1 Answer

How to change a thermostat on a 1990 volkswagon passat

Thermostat Coolant Pump & Thermostat 42405296 Hope this helps, it it does please leave feedback and vote Thank You and Good Luck

Jan 02, 2011 | 1990 Volkswagen Passat

4 Answers

Water in KIA Carnival (Australia) keeps overheating and building up pressure in overflow bottle, then squirting out. Could this be Thermostat problems? If so where in engine is it situated and how hard is...

G'day Noel,
Yes it could be the themostat. It is located inside a little housing at the top front of the engine. Replacement is straight forward. Remove any cowls or covers obstructing your view of the top radiator hose where it attaches to the engine. Drain the coolant from the system by undoing the bottom radiator hose. You may want to catch this fluid for later use. Remove the top radiator hose. Undo the three bolts holding the thermostat housing and gently tap if free with a screwdriver handle. Clean and inspect the housing for corrosion damage. Fit new themostat and refit the housing using a new gasket. Note: make sure you put the themostat back the same way it came out. Tighten housing bolts, replace radiator top and bottom hoses and fill with coolant. Do not fit radiator cap at this point. Start and run engine until you feel hot water arrive in the top of the radiator and all air has been dispelled. Shut off the engine and top up the radiator coolant. Do this again after it has cooled down and before attempting any long trips check it again. Do not open the radiator cap when the engine is hot. Also have a read of this article...

cheers, Geoff:Toowoomba, Queensland

Mar 22, 2010 | 2004 Kia Sedona

1 Answer

I need step by step instructions on how to

1990 Cadillac Deville 4.5L FI 8cyl Repair Guide

Never open, service, or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. In addition, 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 old.

4.5L and 4.9L Engines
  1. Drain the coolant to a level below the thermostat housing.
  2. It may be necessary to remove the upper air filter assembly on some models.
  3. Remove the 2 bolts securing the upper thermostat housing to the lower housing.
  4. Remove the upper thermostat housing.
  5. Remove the thermostat and O-ring from the lower housing.

Fig. Thermostat installation-4.5L and 4.9L engines

To install:
  1. Install the thermostat and a new O-ring to the lower housing.
  2. Install the upper thermostat housing to the lower housing. Tighten the thermostat housing bolts to 20 ft. lbs. (27 Nm).
  3. Refill the cooling system using a 50/50 mixture of water and ethylene glycol antifreeze.
  4. Start the engine and check for coolant leaks. Allow the engine to come to normal operating temperature. Recheck for coolant leaks.

Hope helps with this (remember rated this) Good luck.

Jan 14, 2010 | 1990 Cadillac Deville

1 Answer

No heat in the interior of a passat 1984

Could you have problem with the valve for passage of coolant heater or problems in the gate that divides the heater and air conditioning as this does not select good

Jan 10, 2010 | 1990 Volkswagen Passat

1 Answer

Where is the coolant temp sensor on the 2003 VW Passat GL

The coolant temperature sensor on the V6 Passat is located on a pipe
that crosses between cylinder heads on the firewall side of the engine.
A. You will need to remove the plastic cover over the intake manifold.
B. Remove the air filter housing
c. disconnect the Mass Airflow Sensor
D. Loosen the clamp on the far end of the flex pipe going into the intake
Gently pry the flex pipe off the plastic housing and slide it off
the sendor is located around E.

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Nov 04, 2009 | 2003 Volkswagen Passat

1 Answer

Coolant leak

check them plastic housings for distortion ,or just change them ,they are only cheap anyway and very prone to leaks when hot and under load

Jun 20, 2009 | 1999 Volkswagen Passat

1 Answer

How do I replace the thermostat in my 1990 buick LeSabre?

Hello thank you for using for your answer my name is David .
This should help you out if you have any other questions please let me know.

  • Drain some coolant into a clean container until the coolant level is below the thermostat housing.
  • Remove the upper radiator hose connection from the thermostat housing.
  • Loosen the housing bolts and remove the housing.
  • Remove the gasket and scrape it carefully from the surface of the housing and the mounting surface on the engine. If the gasket remains on either of the surfaces, there will probably bea coolant leak after reassembly. Some engines use a rubber O-ring to seal a thermostat housing.
  • Compare the size of the thermostat to the old one. They are of different sizes, types, and temperature ratings.
  • The temperature rating is stamped on the sensing bulb on the bottom of the thermostat. The temperature bulb faces the block.
  • When replacing a thermostat, be sure that the thermostat fits into the groove in the block or outlet housing. If the thermostat is installed upside down, the engine will overheat.
  • Install the gasket.
  • Reinstall the thermostat housing. Refill the system and run the engine or pressure test to check for leaks.
  • When the engine has reached operating temperature make sure the thermostat opens.
  • You should be able to see coolant circulating within the radiator.
  • Another way of checking thermostat operation is to feel the top of the radiator hose or use a thermometer or multimeter with a temperature probe to confirm that the coolant is warming up.
  • If the engine is overheating, but the top hose is still cool to the touch, the thermostat is stuck closed and must be replaced.

Nov 08, 2008 | 1990 Buick LeSabre

1 Answer

2001 VW Passat leakin water

I would highly suggest a pressure test to really pin point this leak. I can tell from diagram that the coolant expansion tank line goes right thru that area. I would also caution you to the obvious with this vehicle- everything is a tight fit and coolant leaking from the t-stat housing and or water pump could look similiar. I strongly suggest a pressure test to keep from throwing good money away.

Nov 04, 2008 | 2001 Volkswagen Passat

1 Answer

MX5 repair

should be by the thermosat housing, a a fitting with a wire plugged on it.

Sep 19, 2008 | 1990 Mazda MX-5

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