Question about 2002 Audi A4

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What are the common problems for audi a4 b6 alt 2.0 enine

Thermostat and coolant housing blew up

Posted by Anonymous on

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6 Suggested Answers

Anonymous

SOURCE:

Hi there,
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Posted on Jan 02, 2017

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Anonymous

  • 1 Answer

SOURCE: I have a question about the thermostat of A4...

It should stand around 90C (194F) during normal operation. Normally it starts cooler (of course) but then it finds its steady state around 90C (194F). 105C is high, there might be a problem about the water pump or some other component in the cooling system.

Posted on Sep 15, 2008

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Anonymous

  • 324 Answers

SOURCE: Audi 2001 A4 (B6)TDI SE 130BHP

you need ot do a tune up, these problems are ussually associated with bad wires and coil packs...

Posted on Nov 26, 2008

Jerry

  • 207 Answers

SOURCE: 1999 Audi A4 Engine Coolant Thermostat

I completely understand. Here's where you can find the thermostat location:
2.8L V6 Engines

The thermostat is located in the engine block just to the side of the water pump underneath the housing where the upper radiator hose is attached.

  1. Remove the lower engine shield.
  2. Place a large drain pan under the vehicle to collect the coolant.
  3. Remove the radiator cap and drain the cooling system into a suitable container.
  4. Place a large drain pan under the engine block drain located at the bottom of the engine near the vicinity of the flywheel and the oil pan.
  5. Drain the engine block coolant into a suitable container.
  6. Place the (hood) lock carrier in the "service position". For additional information, please refer to the following topic(s): Body And Trim, Service Position, Front Bumper, Hood Lock Carrier.
  7. Remove the accessory drive belt. For additional information, please refer to the following topic(s): General Information And Maintenance, Routing Maintenance And Tune-Up.
  8. If installed, remove the upper front engine cover.
  9. Remove the toothed camshaft drive belt from the right side cylinder head to allow enough access to remove the thermostat housing. Cover and protect the drive belt from residual coolant.
  10. Remove the mounting fasteners; remove the housing, then the thermostat.
WARNING: The thermostat vent valve must be installed facing up otherwise the cooling system may develop air pockets and allow the engine to overheat.
  1. Using new O-ring, install the thermostat making sure the vent valve is installed facing up.
  2. Install the thermostat housing and torque the housing the bolts to 88 inch lbs. (10 Nm).
  3. Inspect the camshaft drive belt for wear and damage and replace if necessary. If contaminated with fluids or lubricants, it should be replaced. For additional information, please refer to the following topic(s): General Information And Maintenance, Routine Maintenance And Tune-Up, Engine And Engine Overhaul, Timing Belt And Sprockets.
  4. Installation is in reverse order of removal noting the following: Top off cooling system with the recommended fluid and concentration. For additional information, please refer to the following topic(s): General Information And Maintenance, Fluids And Lubricants.
Post your email address and I'll send you a couple of exploded diagrams. Have fun.

Posted on Apr 29, 2009

Anonymous

  • 365 Answers

SOURCE: looking for procedure to properly bleed an audi A4

You didn't say what year the car is or what other diagnostics you've done lately...My guess is the radiator core is plugged...If you want to tackle it yourself, buy a Chiltons repair manual at AutoZone or NAPA stores ($25). I suspect you'll have to order the manual.
Good Luck

Posted on Jun 26, 2009

Anonymous

  • 138 Answers

SOURCE: bleeding a4 (b6)cooling system?

bleeder screw on metal water pipe above inlet manifold. loosen bleeder screw, fill coolant at coolant resivoir untill all air pushed out bleeder.

Posted on May 12, 2010

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1 Answer

2001 ford winstar top radiator hose stays cold, even close to the thermostat area i can hold on to the housing after the car has ran for 30 minutes, heater blows luke warm to warm at times, but not...


Check the heater hoses for warmth at the heater core. Some designs do not use a waterflow valve, but instead always have heater core flow and use the air flaps to regulate heat.

Now there is a difference in some thermostats and the housings. Barely noticeable are the locking tabs inside the housing and on the thermostat ring. If you have this setup and the thermostat is not locked in place, you could get some bypass around the thermostat.

If you have an electric cooling fan, the Relay may be stuck, keeping the electric cooling fan running when it should not. This would overcool the engine.

Please rate my info.

Mar 08, 2013 | Ford Windstar Cars & Trucks

1 Answer

How to change thermostat


the radiator is filled to the top with coolant and the engine is run without the radiator cap in place, the coolant will expand and spill over as the engine warms up.
  • 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 stu

    CAUTION
    If the radiator is filled to the top with coolant and the engine is run without the radiator cap in place, the coolant will expand and spill over as the engine warms up.

    • 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.
    NOTE When a paper gasket is used and the recess is in the thermostat housing, it is a good practice to position the thermostat into the recess and glue the gasket to hold it in place. If it falls out of its groove during installation, the outlet housing can be cracked or a coolant leak will result. Before tightening the water outlet housing, try to rock it back and forth to be sure it is flush. Housings are often cracked during this step.ck closed and must be replaced.
NOTE When a paper gasket is used and the recess is in the thermostat housing, it is a good practice to position the thermostat into the recess and glue the gasket to hold it in place. If it falls out of its groove during installation, the outlet housing can be cracked or a coolant leak will result. Before tightening the water outlet housing, try to rock it back and forth to be sure it is flush. Housings are often cracked during this step

May 07, 2012 | 1998 Mercury Mystique

2 Answers

We're is the thermostat for my 03 CTS


CTS 2003-2005 Removal Procedure...
3.2L Engines
  1. Drain the cooling system.
  2. Remove the radiator inlet hose from the coolant outlet pipe
  3. Remove the bolt securing the oil level indicator tube, coolant outlet pipe and engine front lifting bracket from the cylinder head.
  4. Remove the coolant outlet pipe from the thermostat housing.
  5. Remove the O-ring seals from the coolant outlet pipe. Discard the O-rings.
  6. Remove the intake manifold.
  7. Remove the thermostat housing bolts (1) (image 1 attached)
  8. Remove the thermostat housing with thermostat (2), from the engine (image 1 attached).
  9. Remove and discard the seal ring.
  10. Remove the thermostat from the thermostat housing (image 2 attached).
To install:
  1. Install the thermostat into the thermostat housing.
  2. Install a new seal ring.
  3. Position the thermostat housing with thermostat, to the engine.
  4. Install the thermostat housing bolts and tighten to 15 ft. lbs. (20 Nm).
  5. Install the intake manifold.
  6. Lubricate 2 new O-ring seals with coolant.
  7. Install the new O-ring seals around the coolant outlet pipe grooves.
  8. Insert the coolant outlet pipe (3) into the thermostat housing.
  9. Install the bolt securing the oil level indicator tube, coolant outlet pipe and engine front lifting bracket to the cylinder head and tighten to 15 ft. lbs. (20 Nm).
  10. Connect the radiator inlet hose to the coolant outlet pipe.
  11. Fill the cooling system.
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Image 1

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Image 2

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.

Mar 01, 2012 | 2003 Cadillac CTS

1 Answer

Location of thermostat on 2002 olds alero 2.2


Thermostat Removal & Installation 2.2L Engine To Remove:
  1. Remove the exhaust manifold. If equipped with an automatic transmission.
  2. Drain the cooling system.
  3. Remove or disconnect the following: chevy_cav_02-04_tstat.gif

    • Thermostat housing to water pump feed pipe bolts. chevy_cav_02-04_feedpipe.gif

    • Thermostat housing to water pump feed pipe.
    • Thermostat.
To Install:
  1. Install or connect the following:
    • Thermostat.
    • Thermostat housing to water pump feed pipe.
    • Thermostat housing to water pump feed pipe bolt.
      1. Tighten bolt to 89 in lbs (10 Nm).
    • Exhaust manifold if equipped with an automatic transmission.
  2. Fill the cooling system.
2.4L Engine To Remove:
Thermostat assembly 2.4L 87953024.gif

  1. Drain the cooling system.
  2. Remove the exhaust manifold heat shield.
  3. Remove the coolant inlet housing mounting bolts through the exhaust manifold.
  4. Raise and safely support the vehicle.
  5. Remove the coolant inlet housing stud from the oil pan.
  6. Remove wheel and tire assembly.
  7. Remove the engine splash shield.
  8. Remove the mounting bolts from the transaxle-to-engine block support. Remove the support.
  9. Remove the coolant housing pipe.
  10. Remove the thermostat.
  11. Clean the mating surfaces.
To Install:
  1. Install the thermostat.
  2. Install the coolant housing pipe.
  3. Install and secure the transaxle support-to-engine block mounting bolts.
  4. Install the engine splash shield.
  5. Install the wheel and tire assembly.
  6. Install the coolant inlet housing stud to the oil pan.
    • Tighten to 19 ft lb (26 Nm).
  7. Lower the vehicle.
  8. Install the coolant inlet housing bolts through the exhaust manifold.
    • Tighten the coolant inlet housing bolts to 10 ft lb (14 Nm).
  9. Install the exhaust manifold heat shield.
  10. Fill the cooling system.
  11. Inspect the system for leaks.
3.4L Engine To Remove:
  1. Drain the cooling system.
  2. Remove the air cleaner.
  3. Remove exhaust crossover pipe.
  4. Disconnect the surge tank line fitting from the coolant outlet.
  5. Remove the thermostat housing to intake manifold bolts.
  6. Remove the thermostat housing outlet and thermostat.
To Install:
  1. Install the thermostat and housing outlet.
  2. Install the thermostat housing bolts.
    • Tighten the thermostat housing bolts to 18 ft lb (25 Nm).
  3. Install exhaust crossover pipe.
  4. Connect the surge tank line fitting to the coolant outlet.
    • Tighten the fittings to 15 ft lb (21 Nm).
  5. Install the air cleaner.
  6. Fill the cooling system.
  7. Inspect the system for leaks
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Oct 14, 2010 | Oldsmobile Alero Cars & Trucks

1 Answer

Thermostat replacement 1994 nisan sentra 1.6 eng how to remove and replave


JUST DRAIN COOLANT LEVEL BELOW THE THERMOSTAT. CATCH COOLANT IN A DRAIN PAN UNDER RADIATOR.THEN REMOVE RADIATOR HOSE FROM THERMOSTAT HOUSING ON THE CYLINDER BLOCK.THEN REMOVE THERMOSTAT HOUSING AND THERMOSTAT.CLEAN THERMOSTAT HOUSING SURFACE AND THERMOSTAT HOUSING SEALING SURFACE ON CYLINDER HEAD.INSTALL NEW THERMOSTAT IN PLACE,MAKE SURE THERMOSTAT AIR BLEED HOLE FACING LEFT SIDE UPWARD ON THE ENGINE.SOME THERMOSTAT HAS TOP STAMPED ON IT.MEANING MUST BE FACING UP.WHEN THERMOSTAT IN PLACE.TAKE NEW THERMOSTAT GASKET.PUT SEALER ON BOTH SIDES OF GASKET.THEN.PUT GASKET ON THERMOSTAT HOUSING.THEN PUT HOUSING IN PLACE TORQUE HOUSING BOLTS 16 - 20 FT LBS.WAIT 1 HOUR UNTIL GASKET SEALER CURE.THEN FILL UP COOLANT SYSTEM.BLEED COOLANT SYSTEM AND CHECK FOR LEAKS.

Sep 17, 2010 | 1994 Nissan Sentra 4-Door

1 Answer

How to replace a thermostat 1996 mazda mellinia


Thermostat - REMOVAL & INSTALLATION

CAUTION When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
1.5L, 1.6L, 1.8L (except K8) and 2.2L Engines
  1. Disconnect the negative battery cable. Drain the radiator to below the level of the thermostat.
  2. If necessary, remove the air cleaner assembly.
  3. If necessary, disconnect the coolant temperature switch at the thermostat housing.
  1. Remove the upper radiator hose.
  2. Remove the mounting nuts, thermostat housing, thermostat and gasket.
Do not pry the housing off.


To install:
  1. Clean the thermostat housing and the cylinder head mating surfaces.
  2. Insert the thermostat into the rear cylinder head housing with the jiggle pin at the top. The spring side of the thermostat should face the housing.
  3. Position a new gasket onto the studs with the seal print side facing the rear cylinder housing.
  4. Install the thermostat housing and 2 nuts. Tighten the nuts to 14-22 ft. lbs. (19-5 Nm).
  5. Install the upper radiator hose.
  6. If detached, connect the coolant temperature switch.
  7. If removed, install the air cleaner housing.
  8. Fill the cooling system. Connect the negative battery cable, start the engine and check for leaks. Check the coolant level and add coolant, as necessary.


2.0L Engine
See Figures 3, 4, 5, 6, 7, 8, 9 and 10
  1. Disconnect the negative battery cable.
  2. Drain the engine coolant from the radiator to below the level of the thermostat.
  1. Disconnect the lower radiator hose from the engine.
  2. Remove the housing bolts, thermostat housing, thermostat and gasket.
Do not pry the housing off.


To install:
  1. Clean the thermostat housing and the cylinder head mating surfaces.
  2. Make sure that the thermostat jiggle pin is aligned with the gasket projection.
  3. Install the thermostat to the housing. Align the gasket projection with the opening in the housing. The spring side of the thermostat should face into the housing.
  4. Install the thermostat housing cover and tighten both bolts to 14-19 ft. lbs. (19-25 Nm).
  5. Fill the cooling system. Connect the negative battery cable, start the engine and check for leaks. Check the coolant level and add coolant, as necessary.

Hope helps (remember rated this).

Jul 08, 2010 | 1996 Mazda Millenia

2 Answers

Where is the thermostat


Please choose the correct steps for the size of engine that you have:

4.5L & 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.

280c20b.gif
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.

4.6L Engines
  1. Drain the coolant to a level below the thermostat housing.
  2. On some vehicles, access is easier if the front-end beauty panel and the air cleaner are removed.
  3. Remove the 2 bolts securing the thermostat housing to the intake manifold.
  4. Remove the thermostat housing.
  5. Remove the thermostat and O-ring from the housing.

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Thermostat installation—4.6L Engine


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Loosen the upper radiator hose clamp at the thermostat housing


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Remove the upper radiator hose clamp from the thermostat housing


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Remove the thermostat housing retaining bolts and . . .





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. . . remove the thermostat housing from the engine


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Separate the thermostat from the housing

To install:
  1. Install the thermostat and new O-ring to the housing.
  2. Install the thermostat housing to the intake manifold. Tighten the thermostat housing bolts to 18 ft. lbs. (25 Nm).
  3. Refill the cooling system using a 50/50 mixture of water and ethylene glycol antifreeze.
  4. Install the air cleaner and beauty panel, if removed.
  5. Start the engine and check for coolant leaks. Allow the engine to come to normal operating temperature. Recheck for coolant leaks.

May 23, 2010 | 1996 Cadillac DeVille

1 Answer

Thermostat housing replacement


These are the steps to replace the thermostat but are applicable to remove and replace the housing also. 2.0L DOHC Zetec Engine WARNING Do not mix Standard (green) Coolant with Extended Life Coolant (orange). If mixing occurs, drain engine cooling system and refill with originally equipped coolant type. If this contamination occurs the service change interval on Extended Life Coolant will be reduced from 6 years/150,000 miles to 3 years/30,000 miles.

  1. Disconnect the battery ground cable.
  2. Drain the engine coolant to a point below the water thermostat.
  3. Disconnect the connector from the camshaft position sensor.
  4. Remove the bolts and move to one side the water hose connection.
  • Remove the water thermostat and seal from the water thermostat housing.
  • Inspect the seal and the water thermostat.
  • To install:
    1. Replace the thermostat and seal into the housing.
    2. Connect the connector to the camshaft position sensor.
    3. Fill the cooling system.
    4. Start the engine and check all hoses and connections for leaks. Allow the engine to warm up so that the water thermostat opens.
    5. Stop the engine. Top off the coolant recovery reservoir as necessary to maintain minimum cold fill level.
    e990057.gif

    2.0L SOHC Spi Engine
    1. Disconnect the battery ground cable.
    2. Remove the air cleaner outlet tube.
    3. Drain the engine coolant to a point below the water thermostat.
    4. Disconnect the water temperature indicator sender unit and the engine coolant temperature sensor electrical connectors.
    5. Disconnect the upper radiator hose and the heater coolant hose from the water thermostat housing.
    6. Remove the water thermostat housing bolts, the water thermostat housing, and the water thermostat.
    To install:
    NOTE Make sure all of the gasket surfaces are free of all gasket material. Make sure the tabs on the engage properly into slots in thermostat housing.

    1. Install the thermostat housing bolts, thermostat housing and the thermostat.
    2. Connect the upper radiator hose and the heater coolant hose to the thermostat housing.
    3. Connect the water temperature indicator sender unit and the engine coolant temperature sensor electrical connectors.
    4. Fill the cooling system with only Ford Premium Engine Coolant E2FZ-19549-AA (in Oregon F5FZ-19549-CC, in Canada, Motorcraft CXC-8-B) or equivalent meeting Ford specification in a 50/50 mixture with water.
    5. Start the engine and check all hoses and connections for leaks. Allow the engine to warm up so that the water thermostat opens.
    6. Stop the engine. Top off coolant recovery reservoir as required to maintain minimum cold fill level.

    Dec 07, 2009 | 2000 Ford Escort

    1 Answer

    I pulled over and steam poured out. I opened the


    tell the dealer they will know the name in parts

    Jun 06, 2009 | 2003 Dodge Intrepid

    3 Answers

    In need of serious help, thermostat problems.


    well The same thing happened to me and I have a Answer!
    It was was just getting to hot and the thermostat housing is Crappy mine blew as well.. so I went to a Toyota dealer and bought the part and put it in my self.... EASY Stuff

    May 27, 2008 | 2001 Daewoo Lanos

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