Question about 2004 Volkswagen Jetta

1 Answer

Thermostat? My car is overheating, but only when i am driving. When the car sits idle the temperature is fine and the fans do kick on. I was told it was the thermostat and that it should be switched out. I have purchased the parts and a couple of my friends are going to fix it for me but are unsure where the thermostat is located. Help...

Posted by on

  • angie7700 Jul 25, 2008

    I have the exact same problem with my Jetta, my boyfriend and I replaced the Thermostat and tested the old one (easy to do! just put it into a pan of water and boil it, the spring will move and the valve will open if it's okay)- the problem continued and the Thermostat was just fine. I took it to a mechanic and found out it is most likely the water pump. I'm scheduled to have it repaired next Friday- do you have the extended warranty? I do, and it will be covered.

  • Eve Mathews Aug 26, 2008

    Our 2004 Jetta was overheating after a short time of driving (first happened four days ago) and we have not been able to drive it for over 5 minutes since them without the temperature going too high. It is at the mechanic right now and he said it was not the thermostat. He did say one of the fans was out, but it did not fix the problem completely. They think it might be a blown head gasket - there was no smoke or anything when it first overheated though.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

The thermostat is located behind the alternator. Atleast on the 1.8t it is. I had the same problem and same symptoms. I hate to tell you this but its probably not the thermostat. Its the water pump. They have plastic impellers on them that that deteriorate after a while. Make sure if you get your water pump replaced you get one that has a metal impeller on it. You should get a new timing belt well they are in there as well. They have a pretty good deal on kits at ecstunning.com

Posted on Jul 22, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Overheating when I sit idle.


Over heating the engine is a serious concern. With the hood raised you should hear the motorized fan turn on just behind the radiator as the engine requires additional cooling.. If you look in from the rear of the radiator you should see the fan blades.

This electric powered motor operates on a thermostat and when the engine temperature rises this fan should come on. I'm assuming from your description that when driving and air is flowing through the radiator as the car travels the engine is nor overheating.

Check fan motor thermostat, check fan motor and check wiring.

Wiring Diagrams related to the Honda Civic
http://www.wiringdiagrams21.com/category/automotive/honda-automotive/civic

Motor engine cooling fan only runs as engine temperature requires additional cooling.
26039150-lr2ctbdmqn2bwyjyaqvn1njk-1-0.jpg

Jan 05, 2016 | 2001 Honda Civic

1 Answer

Fan stays on for a few minutes and overheating


firstly the the fan will stay on for few time(cooling fan).And its not the thermostat climb its the high temperature indication at the intrumental pannel cluster meter if the temperature indication is too high than there will b any problem in ur car related to overheating may b the coolent leakage or the thermostat valve not working properly

May 24, 2012 | Honda Accord Cars & Trucks

1 Answer

When i am driving my 2002 buick rendevous, the temperature gauge sits between 1/4 and 1/2. however when i have to sit idle ( ex. like at a red light) the temperature gauge creeps up to between 1/2 and...


This is normal. The gauge should sit at around the 1/2 mark. And it will go up at idle until the fans kick on then go back down some. Fans will kick on around 210 degress

Jul 08, 2011 | Buick Rendezvous Cars & Trucks

1 Answer

I have a 2001 Chevy Impala. It's started overheating after sitting in one stop for a long time. As long as your moving the car is fine but as soon as your in traffic or stopping the temp rises. It...


Check to make sure the cooling fan is kicking on it is mounted to the back of the radiator once the car gets up to temp it should kick on to coll the radiator when you are sitting in traffic on some cars if you turn the ac on the computer will automatically switch the cooling fan on

Jun 23, 2011 | 2001 Chevrolet Impala

2 Answers

94 Accord Overheating. So my temp gauge goes all the way up slowly when i sit at a stop light and when i take off obviously it cools the car down or if it turn the heat on that helps. So over the...


Unless you are using old antifreeze with enough globs of crud in it to constrict your thermostat and prevent good coolant movement, your overheating is more likely caused by a problem with your electric fan, rather than a problem with your thermostat. The fans in front of your radiator and A/C heat exchanger don't do anything when your car is moving faster than, say, 20 or 25 miles per hour. If you only drove on the highway, you wouldn't even need a fan. However, they're really needed when you're sitting at a stoplight or driving at low speed.

Your fan system has a few possible trouble spots. I believe that your Accord has an electric, not a belt-driven main fan. And, those electric fans do go bad. This is not uncommon; fans are stuck out in the elements, and they can rust up, a blade can crack, or the contacts could corrode. You can test this by jumping 12v of power to the fan terminals to see if it spins up--and stays spinning for at least 30 seconds or so. A fan may work briefly and then cut out if its bearings are shot--as they overheat and expand, they'll grind the fan to a halt. If your fan seems to be working fine, double-check that the wiring connectors are nice and shiny so that they're making a good connection.

Second, and equally possible, your fan relay may have gone bad. There's a coolant temperature sensor that is designed to send a signal to the fan relay if the coolant gets too hot. That relay has a mechanical element in it that also can go bad--it may be receiving the signal to do something, but the relay isn't closing properly to kick off the fan.

Third, the coolant sensor sending a signal to the fan relay may also have gone bad. This is normally a separate sensor from the one sending a signal to the temperature gauge in your dashboard.

Driving entirely without a thermostat will greatly lower the coolant temperature in your car and will give you a temporary fix for this problem while you troubleshoot your fan system. However, because the coolant will never fully heat up, you may experience a decrease in fuel economy and your tailpipe emissions may go up. And, of course, you won't get very much heat from your climate control system. Driving without a thermostat is a short-term fix, not the solution to your problem.

May 16, 2011 | 1994 Honda Accord

1 Answer

When idling my jeep overheats. The cooling fan is running and it speeds up when temperature goes up. The temperature gets close to 260 degrees and the engine tries to stall. when I start moving it cools...


At idling speed an engine does build up a lot of heat and the cooling fan will kick in. In slow moving traffic or traffic jams the temperature gauge can touch the red - particularly on hot days. The reason it cools down when you start moving is because of the air flow through the radiator.

Presumably there are no leaks from the cooling system otherwise you would have mentioned it. In normal circumstances the fan will not be running as you are driving at speed, as the air-flow through the radiator is sufficient to cool things. The fan only kicks in to get rid of excess heat - and this usually occurs at idling speed or after you have parked the car.

If the fan is running all the time as you drive, this points to either a fault in the fan switch, or the car is running too hot. presumably in normal driving the fan isn't running and the temperature gauge reads normal?

It is common - in stationary traffic many cars overheat (particularly big engined models) try to stall and 'cut out'. Restarting can be difficult until the engine cools down.

Is your car overheating in normal driving conditions or just at idle speed? Overheating in normal driving conditions can be caused by things like a failing water pump, blocked radiator, collapsed hose, faulty thermostat or, in the worst case scenario, cylinder head problems.

Overheating at idling speed is 'common'. Check your coolant level. If your car isn't using/losing coolant then there probably is no major problem. You can flush out the cooling system and refill with new coolant - and also check your radiator. Are the cooling fins crumbling with age? Or maybe they're partly clogged with insects and debris from the road? A blast with a hosepipe wil sort that out ..

The question is how much does your car overheat in normal driving? If it doesn't .. it appears as though you have nothing to worry about as such. Most cars have 2 speed fans... the 2nd faster stage kicks in at some point dependant on engine temperature. Perfectly normal.

Aug 14, 2010 | 2003 Jeep Grand Cherokee

2 Answers

When driving i have rising water temperature


The coolant temperature should rise until the gauge indicated roughly half. if it continues to go until it reaches the red "H" shut the vehicle off and wait for the car to cool off. The most likely cause of this is the thermostat. It is a $4-$10 part and usually is easy to change. Thanks for asking!

Jun 28, 2010 | 2000 Mitsubishi Galant

1 Answer

Over heating


Is it overheating while at a stop or idle for period of time or just overheating in general, like during normal driving…Secondly are you sure it’s actually overheating or is the gauge just showing high…Because it could be a bad reading from the temperature sensor, which is located on the outside of the engine block…In any case make sure your electric fan is kicking on, if not it could be a fuse, connection etc…If the fan is coming on it could be that your thermostat is stuck…You can always just try and flush and refill your radiator if it’s been awhile since that has been done…Could be a bigger issue like a head-gasket, but I’d definitely check out the fan and the thermostat first…tg

Mar 15, 2010 | 1993 BMW 3 Series

2 Answers

Help with a Sharan 2.0 gl 1996 auto overheating?


Hi There,
Replace the Thermostat and let me know the results.

Mar 23, 2009 | 2001 Volkswagen Beetle

Not finding what you are looking for?
2004 Volkswagen Jetta Logo

481 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volkswagen Experts

Colin Stickland
Colin Stickland

Level 3 Expert

21990 Answers

yadayada
yadayada

Level 3 Expert

64052 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Volkswagen Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...