Question about 2001 Volkswagen Passat

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I have a 2001 VW Passat 1.6S. I have just had the cylinder head gasket, timing belt, water pump and thermostat replaced. When the thermostat is removed the engine runs perfectly. However when it is reinserted the engine runs ok until it heats up and then the car doesnt seem to be running on all cylinders and loses a lot of power intermittently. My mechanic is talking about the temperature sensor because he has basically replaced everything else. I would really appreciate any ideas that you might have as I have spent a fortune on the car already. Thanks. Paul

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It could be the temmperature sensor, however its sound like the thermostat is still bad, this happens on occasion where you get a brand new part that has a factory defect

Posted on Apr 04, 2011

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One thing to help you determine If your thermostat is bad, His to take the thermostat And put it in a pan of boiling water. If it opens fully You know it is a good thermostat. If it does not open, you know it is bad. Return it to the place you purchased it and get the replacement. Before you install the new thermostat, Repeat the boiling process and verify is good or not

Posted on Apr 04, 2011

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Ihave a 99 vw passat 1.8 ,replaced head timing belt,gear,and cover,new water pump,thermostat,and overheats very quickly.it has 2 fans,1 electric the other is driven by beltsand is with fan clutch,clut


First, Ronald is an IDIOT! DO NOT power wash the engine EVER! If the engine is really hot and you spray ice cold water on it can crack the head instantly! Also, everyone knows' water and electricity don't mix! the ignition control module is $300. A little water on that and its gone!
If your car is overheating, you may need a water pump! The one you got, may have been bad! The rule is, as soon as a car overheats, the thermostat MUST be changed! A simple test would be to remove the thermostat and close it back up! A few dollars for the gasket is all you will spend! Try and run the car without it and see if it still gets hot! If it still gets hot, check the water in the radiator or resivor to see if the water is also hot. If its hot then the water pump is working and you need to check the fans! You can run a power wire to the fan to make sure they are working. There are relays for those also! If they are not turning on, that is most likely your problem! I rebuild VW's for a living!

Aug 12, 2012 | 1999 Volkswagen Passat

1 Answer

Show me how to replace a water on a 1999 VW Passat e a water pump on a 1999 VW Passat


It depends on what engine you have, but all 3 are similar. They are all in the front of the engine, so the water pump can be run by a belt. With the 1.8 turbo, it is run by the serpentine belt, but you still have to take the timing belt off because it is behind the timing belt slightly. The Vr6 is run by the timing belt, so also needs the belt removed. The V6 was less common, but also difficult. You do not have to take the timing belt off I think, but you have to remove the whole chassis at the front, because there is so little room otherwise. There really are only 4 main bolts holding the whole chassis front on. It is recommended that the thermostat and timing belt be done at the same time, to save labor, since it is intensive on any engine.

Aug 03, 2010 | 1999 Volkswagen Passat

3 Answers

2001 VW Passat, has 120,000 miles. I'm told the


You didn't tell us in which currency that '2780' was quoted but if US $, that seems unreasonable to me.
Timing belts can cost >$100 but not often and vary in degrees of difficulty to replace; on one of our cars (87 X1/9) it's about a 30 minute job. A Subaru Outback is more like a couple of hours so yours is likely in that range somewhere.
Valve cover and transmission gaskets aren't normally that tough to replace and cost little; check one of the chain auto parts sites to verify that. It only takes a few minutes to run up the potential parts cost and the labor should run well under a $1000 total.
Now you have a second opinion but, get a 3rd one in person.

Jul 08, 2010 | 2001 Volkswagen Passat

2 Answers

I can not locate the thermostat on a 1999 vw passat


Hi:
The thermostat on your car is located under the thermostat housing. This is located on the engine and your upper radiator hose is connected directly to it. If you are wanting to change it, start with a cold engine, and first drain your coolant out of your radiator, then disconnect the radiator hose from the thermostat housing, remove the bolts that attach it to the engine, and carefully remove it. The thermostat can be removed and the new one installed. Remember to scrape off all gasket residue, and install the new thermostat with a new gasket. Reconnect the upper radiator hose, then fill the engine back up with coolant. Start the engine, and let it warm up and check for leaks!

Jan 24, 2010 | 1999 Volkswagen Passat

1 Answer

Keeps over heating after five or ten minutes of use. have replaced water pump and thermostat. electric fan seems to be operating normally


it seems like damaged cylinder head gasket, check for water in oil/oil in water, water loss.. replace gasket and check cylinder head pressure

Nov 08, 2009 | 2001 Dodge Durango

1 Answer

2001 Passat 1.8T brook the time belt


Sometimes you must install the timing cover temporarily with the crank pulley to ensure you are at true Top Dead Center line up the notch on the pulley with the pointer on the timing belt cover or pointer on crankshaft cover I had a problem with a dual cam Honda in which the marks on the engine block where slightly off. you must ensure that both intake valves and exhaust valves are shut one cylinder #1 by turning the cams in the appropriate direction, from your description of the situation it sounds like when it runs poorley it is off by one tooth, when you move forward a tooth it runs but poorly make sure you are moving both cams if equipped with dual cam, both cams should be in the exact same visual location in other words all valves completly shut, be careful not to move lower shaft after lining up the crank pulley to cover pointer marks, after resetting turn the engine over two full turns then recheck all markers.

Aug 03, 2009 | 2001 Volkswagen Passat

1 Answer

Dont know where thermostat goes. engine overheating, coolsnt not cycling.


The thermostat is bolted into the bottom of the water pump, the lower radiator hose connects to a cover that holds the thermostat to the water pump.

the thermostat can be difficult to get at because the AC and power steering pump are all bolted on top of the water pump,

Your problem may not be a bad thermostat.
I would also check:

1) water pump, some of the vw pumps are poorly made & tend to go bad.

2) fans belts, it can be tricky to get the right tension on these belts due to a badly designed tensioner system on the power steering & water pump belt.

3) hoses, radiator, coolant tank,. the radiators and coolant tank tend to leak when they get old, the plastic cracks or the rubber seals go bad.
Also check the electrical system controlling the engine cooling fans. there are sensors and relays that can go bad.
I have owned 8 vw's most of the major problems with these cars was due to electical problems.

4) Engine problems such as a blown head gaskets, or ignition timing problems can cause overheating. luckily VW engines usually don't have these problems, unlike other companies 4 cylinder engines (the Dodge Neons for example)



Jun 19, 2009 | 1997 Volkswagen Jetta

3 Answers

2001 VW PASSAT OVERHEATING


did the electric fan on the radiator start up? if this dont start up, it can get the engine overheated , specily if the car run in hot weather , an when the car stay on idle . The other problem is the engine head , the head gasket can blow and you get the compresion presure in the water chanal .Try to se of the oil on engine is gray? If gray you must change head gasket.
Hoope this can help you

Nov 13, 2008 | 2001 Volkswagen Passat

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