Question about 1998 Audi A4

1 Answer

A coolant leak that seems to happen sometimes. It seems to be using a lot of coolant without leaving any kind of puddle, except sometimes. I just caught it "dumping" after a short drive. It has been unseasonably hot. If I am standing in front of the car, it is coming from the left hand side of the car (opposite side of over flow) from bottom. It is a 1998 A4 with 128k miles. Please tell me I have not cracked the engine block.

Posted by on

  • 1 more comment 
  • lwspear Oct 15, 2010

    Radiator cap or overflow fill cap? The radiator is pretty well hidden and I didn't even think it had a radiator cap.

  • lwspear Oct 15, 2010

    I took it to a mechanic and the leak is coming from the sensor. $60 takes care of it.

  • lwspear Oct 15, 2010

    Not really, but cleared up some things i was confused about regarding cooling systems.


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Audi Master
  • 17,129 Answers

No, This does not look as though the enigne block is craked or else your car wont run smooth. This is a case of the radiator pressure cap being faulty. The water seems to boils up and goes out as the pressure cap is gone soft.
You must take the pressure cap after the engien is cold and replace.
Now make sure the engine is not over heating , if so there are many other issues to check.
Your radiator may be blocked reducing the cooling intensity.
Your radiator can have very small pores of leak that can also reduced the sealed system to pressure out.
Your engine timing tuning can be faulty to set the engine work inefficiently.... check the timing/tuning
Your fan must be checked for performance.
make sure there is also no hindrance of any objects to the radiator.

Posted on Oct 15, 2010

  • Donald DCruz
    Donald DCruz Oct 15, 2010

    For the coolant water to over flow from the overflow tank, it must be a reason that the water is heating to steam up . hence check if the temperature is exceeding the limit, if so the engine might be just overtimed. It seems that a scan might be needed to check the parameters or error codes to confirm the status of the engine.


1 Suggested Answer

  • 2 Answers

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

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.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Why do I have only Intermittent heat with new thermostat?

Sounds like an air pocket in the coolant system. Those can be a pain, some cars have bleed valves to help. If there is an air pocket, it will seem to be full of coolant, but when the air pocket gets to the heater core it gets stuck there and guess what? No heat, because you won't get any heat unless hot coolant is in the heater core. Old fashioned way is to open the system and keep pouring coolant in at operating temp with heat on full until all the air is pushed out. If it has a bleed valve that can be helpful. Have seen this problem on many vehicles.

Jul 30, 2014 | 2001 Ford Mustang V6

1 Answer

02 Honda Oddessy leaking trans fluid with no burst pipes or puddle

Not sure what you are saying here, no drips under the car?? Are you sure? If that is the case then the fluid must be leaking out of the fluid cooler into the cooling system, is there fluid int the coolant?

Jun 25, 2012 | Cars & Trucks

1 Answer

Radiator fluid disappers with out a leak

Half a gallon a week? Bad for the car, bad for the pocketbook.
Have a shop do a pressure test of your coolant system to check for leaks. You might also want a block test where they check for exhaust gases getting into the coolant system-maybe your coolant is getting into a cylinder and burning off. How does the car run? any white smoke out the exhaust? Or signs of overheating?
That's kind of a worst-case scenario (head gasket problem, or cylinder head problem), but that's an awful lot of coolant loss, and it's got to be going somewhere.
Good luck.

Feb 18, 2012 | 2006 Hyundai Santa Fe

1 Answer

I have a 2003 voyager and apparently i have a coolant leak. i add coolant, drive it for a while and then park it for the night. no coolant seems to leak while i drive it but the next morning when its...


Oct 09, 2011 | 2003 Chrysler Voyager

1 Answer

Our temperature gauge goes from a blue light to a flashing red. after putting more coolant in, it seems to correct the issue for a little bit then it happens again. Why is this light going on?

The blue light is only supposed to indicate low engine temperature, reminding you to go easy on the engine until the light goes out.
The flashing is either for low coolant or for overheating, and it sounds like you are having a low coolant problem.
If after you add coolant the lights comes back, you have a coolant leak. The most common place for a leak is the coolant flange on the end of the cylinder head. If you take the engine cover off and look at the area where the transmission meets the engine, you should see either pink coolant puddling or pink crusty residue.
It's also possible to have other leaks from the radiator, heater core, water pump, etc. The nice thing is that with the pink coolant it will leave a trace of pink residue leading to the leak if you take a good look around with a flashlight.

Feb 17, 2011 | 1999 Volkswagen Beetle

2 Answers

I have had a coolant leak for nearly a year. It only leaks when the engine is cool. I cannot trace the leak to anything, but I am getting a puddle. Not mixing in the oil. Any help? Thanks. Matt

On the 8 cylinder motors, the gaskets between the waterpump and block fail quite often. if you find it's the problem, get the new up-dated gaskets from a GM dealer- they are the only one's that have a decent replacement- costs less then aftermarket too!

Jan 22, 2011 | 2001 Chevrolet Silverado 1500

1 Answer

How do I find a coolant leak in my 2001 Dodge Intrepid 3.2L? It does not appear to be the hoses, but I notice the passenger side of the radiator is wet. Noticed puddle of coolant under passenger side of...

HI, The easiest way to find a cooling system leak to preform a pressure test. This test requires the use of some special equipment so I will just give you some common areas of these engines that leak. 1. check the upper radiator hose at the radiator. the plastic tank cracks sometimes. 2. check around the thermostat housing. 3. The worse for last there is a coolant passage tube that runs under the intake manifold almost impossible to see without taking things apart. but when it leaks the coolant seems to show up n the floor on the passenger side back by the firewall. I hope these help and you can locate the problem. Be careful when looking for these problems when the engine is hot you can get burnt. Good luck

Aug 27, 2010 | 2001 Dodge Intrepid

1 Answer

Water\coolant leaking from engine after shutting engine down

It takes a lot more than a small leak to consider your engine as "totaled"
Have the system pressure tested and carefully inspected. Every leak has a source. some are easy to find, some are a bit more difficult. A shop can use a fluorescent dye and a black light to locate the source if you can't.
I'd check the corners of the intake manifold and timing chain housing. Also, check the hoses again. A small pin-hole can squirt coolant far away from the hole itself and is often very difficult to see.

Aug 03, 2010 | 1997 Jeep Grand Cherokee

2 Answers

99 Sunfire Coolant keeps dumping

You need to find the source of the leak. it hasn't overheated yet because you keep catching it and re-filling. From your description, it sounds a lot like a bad water pump seal (part of pump) but without physically looking you can't be sure of that. when the pump seal begins to fail, internal pressure while running often will drive the seal tighter against the shaft stopping the leak. as pressure drops as the engine cools, the seal relaxes and permits seepage.
With time, that will change and it will leak all the time.

Oct 06, 2009 | 1999 Pontiac Sunfire

Not finding what you are looking for?
1998 Audi A4 Logo

Related Topics:

154 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audi Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers


Level 3 Expert

75797 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

14333 Answers

Are you an Audi Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides