Question about Audi A6

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Clutch slips when engine is hota6 2.0 tdi

A6 2.0 tdi. clutch is ok when engine is cold as soon as engine gets warm it slowly gets worse

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  • 35 Answers

Sounds like you have a weak pressure plate

Posted on Apr 07, 2014

  • roy nicholls Apr 07, 2014

    Sounds like you have a weak pressure plate take to a clutch centre ask them but I think you need a replacement

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1999 ford expedition - transmission slip?

the flashing O/D light usually means you have a bad speed sensor that sends speed info to the engine & trans computer.

Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 42) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.
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Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 42) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.

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Some trans use an OSS, Output Shaft Sensor instead of a VSS. Depends on which trans you have, 4R100 or 4R70W

Transmission Control Switch (TCS) and Transmission Control Indicator Lamp (TCIL)
The transmission control switch (TCS) is a momentary contact switch. When the switch is pressed, a signal is sent to the powertrain control module (PCM) to allow automatic shifts from first through fourth gears or first through third gears only. The PCM energizes the transmission control indicator lamp (TCIL) when the switch is off.

The TCIL indicates overdrive cancel mode activated (lamp on) and electronic pressure control (EPC) circuit shorted (lamp flashing) or monitored sensor failure.

Output Shaft Speed (OSS) Sensor
The output shaft speed (OSS) sensor is a magnetic pickup, located at the output shaft ring gear, that sends a signal to the powertrain control module (PCM) to indicate transmission output shaft speed. The OSS is used for torque converter clutch control, shift scheduling and to determine electronic pressure control.

Posted on Jun 01, 2009

  • 47 Answers

SOURCE: Alarm oil sensor in my Audi A6 1,9 tdi -2000.

sounds like a faulty oil level sensor i,v replaced them in the past you need to get it checked first because the sensors aren,t cheap

Posted on Aug 02, 2009

  • 144 Answers

SOURCE: 02 VW Jetta TDI with ALH engine glow plug

this is a common problem for these cars glow plugs go bad like spark plugs however the smoke would lead to bad mass airflow meter. it is not telling ecu corrcet miss. disconnect mass airflow meter. when cold see if this makes it start better. it should would means you need new m.a.f. glow plug issue take a test light place clamp on positive of battery then pull off glow plug connectors place tip of test light on glow plug the bad one will have a dull light unlike the good one which will be brighter. will need new plugs and wire harness four **** connectors and wire striper and crimper will fix concern good luck

Posted on Sep 01, 2009

Sean80000
  • 1867 Answers

SOURCE: coolent system fault symbol Audi A6

1998 Audi A6 2.8

It could be that the thermostat is stuck in the open position thus providing maximum coolant flow through the engine when the engine is still cold, ie from a cold start. (The thermo should close when the engine is stopped and cold and it opens up once the coolant temp increases and the engine has been running for a few minutes.) Once the engine is hot maximum coolant flow between engine and radiator is normal.

Do you also find that your heater takes a while to provide warm air to the cabin in winter when you notice this condition?

If you do not know when the thermostat was last changed then I would suggest you change it. ( If it malfunctions and sticks in the closed position you will really have a problem). The radiator/engine coolant could no doubt do with a flush and change in any event as it should be done every 2 years. If you don't know when it was last done - do it. Cooling systems tend to be a neglected part of essential vehicle maintenance.

Cheers
Sean
Voluntary contributor.

Posted on Dec 15, 2009

Dan69
  • 69 Answers

SOURCE: squeeling noise near fan belt on cold mornings

Normally a squealing noise like that _is_ the fan belt. It will certainly be one of the belts, check all your belts for wear and tension, replace/re-tension as necessary.

Posted on Jan 06, 2010

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1 Answer

2000 tdi when cold tick over very lumpy and smokes when warm its ok it starts first time no problem?


Not sure what "tick over" means. Suspect it is hard to start when cold? Could be bad glow plugs. They "warm" the cylinders to get them up to temp before starting. It could also be that you are not waiting for the cylinders to warm up. I have a 2009 tdi. It has a light on the dash that goes on when I put the key in, but I have to wait for it to go out before starting the engine.

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My 02 volusia runs good when cold but after a few miles when you stop have to clear it out an slip the clutch to start it off


I have no idea what a "volusia" is, but generally when a fuel injected engine runs well when cold, then gets worse as it warms up, the first thing I check is the coolant temp sensor. This part takes the place of the choke on a carb engine and often fails so it tells the ECU the engine is still cold even as it gets warm, causing too much fuel to be delivered.

May 08, 2016 | Cars & Trucks

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It's diesel. Diesel engines do not like cold, but that is normal. I am going to assume this engine has a start delay in cold weather to allow for Glow Plugs to warm up the cylinders before actually turning over the engine. I don't know about TDI's specifically, but I think a TDI Mech at your local Volkswagen dealer could confirm my assumption. They may call the parts something different, but the function will be the same. Sounds like normal operation for a diesel engine in cold weather...obviously, this would be why the engine always turns over immediately in warm weather...no need for the Glow Plugs to warm the cylinders. Best of luck resolving this problem.

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My Audi a6 was going slowly up a slight hill and I thought it had stalled but when I put it in gear there was nothing at all not seem to be biting onto a gear


Sounds like it's time for a new clutch. Get it fixed as soon as possible, if you keep trying to drive it you can wear down what's left of the clutch and damage the internal plates.

Jan 06, 2013 | 1999 Audi A6

1 Answer

Hi, The air con in my 2003 Audi A6 1.9 tdi 130 is blowing warm air the air con rad is fully gassed and all fuses are ok . Thanks in advance for any advice on how to fix


The only other thing then would be if the compressor is turning, engaging, and the cooling fan working properly. You should either be able to see the compressor clutch engage, as the switch is energized, or at least hear it click loudly when the switch is energized. If it is not, then there are sensors for the low pressure/high pressure line to tell the compressor when to function, that also have to be checked.

As the engine runs with the compressor turning, one line should be hot/warm, the othe,r (larger diameter hose) should be cool/cold, if the system is working properly.

If the compressor is turning when you have the A/C turned on, then see if the cooling fan is running as well. It must run to remove the heat and cause the process to function properly.

Good luck!

Mar 27, 2012 | 2003 Audi A6

1 Answer

Our 2001 Kia Optima, automatic 2.4L at 155k miles has very poor acceleration, tranny slips, sometimes sticks at 3k rpm at 55-65mph, we need to stop, shut off car, restart to reset. Must warm up car to...


This is not what you want to hear, but its time to replace or rebuild the transmission. The clutch packs are worn causing your slipping concern. and your fluid is probably contaminated with the clutch material which can cause hydraulic circuit failure.

Mar 11, 2010 | 2001 Kia Optima

1 Answer

Coolent system fault symbol Audi A6


1998 Audi A6 2.8

It could be that the thermostat is stuck in the open position thus providing maximum coolant flow through the engine when the engine is still cold, ie from a cold start. (The thermo should close when the engine is stopped and cold and it opens up once the coolant temp increases and the engine has been running for a few minutes.) Once the engine is hot maximum coolant flow between engine and radiator is normal.

Do you also find that your heater takes a while to provide warm air to the cabin in winter when you notice this condition?

If you do not know when the thermostat was last changed then I would suggest you change it. ( If it malfunctions and sticks in the closed position you will really have a problem). The radiator/engine coolant could no doubt do with a flush and change in any event as it should be done every 2 years. If you don't know when it was last done - do it. Cooling systems tend to be a neglected part of essential vehicle maintenance.

Cheers
Sean
Voluntary contributor.

Dec 14, 2009 | 1998 Audi A6

2 Answers

On my 1976 Triumph TR6 when shifting I get a little grinding as it goes into gear 2nd,3rd mainly. I just rebuilt the gearbox and installed a new clutch about 700 miles ago. When its cold 2nd gear is worst,...


Sounds like a sychro problem when you rebuilt. I have always found with my gearbox, even when warm it is easy to beat the sychros so i make slower changes. Unless you fix the sychro rings the problem will only get worse

May 16, 2009 | 2006 Triumph Tr 7

1 Answer

Audi A6 2001 1.9 TDI Engine misfire


i'm very convinced it is your mas airflow sensor!!! Had the same problem on my A4

Mar 29, 2009 | 2001 Audi A6

1 Answer

Judder on initial take off when cold.


check replace the engine/transmission rubber mounts

Jul 04, 2017 | 2003 Volkswagen Passat

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