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My Audi A6 1,9 TDI starts and runs for 2 seconds, then engine stops. The display doesont come on anymore. Any idea. Many thanks

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This sounds like an immobiliser issue, try a spare key if you have one, if not then disconnect the battery for two minutes and then re-connect and try that but if that fails the key will have to be recoded by an audi dealer, Make sure you have the radion code also before disconnecting the battery

Posted on Aug 29, 2010

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Audi a4 1.9 tdi thermostat diagramm


First time you might check the thermostat operating.

Heed of antifreeze coolant temperature!!!


The thermostat location for a 2000 Audi A4 1.9 TDI is on back of the alternator at the bottom side of the bracket.

IMPORTANT NOTE: It is NOT necessary to replace the alternator if you want to change the thermostat !!!

Thermostat checking:
1. Cold engine. Start up the engine and watch of the water temp indicator. After first value 60 Celsius Degree you still warm up the engine until the lifter (pointer) reach 80 C deg. (second mark after 60 C deg.). At this time you let engine running at idle speed and check with your hand the thermostat plastic housing and hose temperature in bottom left side of the engine. Heed of alternator driving belt and ventilator fan !!!
2. If the thermostat is good the hose must be cold until the water temp indicator reach almost 90 C deg.
3. The thermostat opening temperature is 87 C deg.
4. If the hose is already warm the thermostat is out of order.

Thermostat location, Part number: 044121113, in german - "Kuehlregle" (Price around $25):
tdisline_211.jpg


Important note: Always replace the thermostat round seal, position 7 in the above picture.

Jul 06, 2011 | 2000 Audi A4

1 Answer

My 1997 audi a4 tdi starts up but if i give it a too much thottle it sounds like it's running on 3 cylinders after a while it clears it does not do it when its warm. also the revs stick at about 3500rpm...


is the engine actually racing or is the tachnometer going up on its own. is the check engine light on and did you have it scanned? is the car smoking at all before it warms up? please provide this information and any other that you may have concerning the problem as this will help pinpoint the problem.

Jul 06, 2010 | 1997 Audi A4

1 Answer

Ran out of diesel 1.9 TDi 74kw. have refuelled and cranked engine for 15mins and still it won't start. there is fuel from tank to filter, to pump and return flow.


This is very important for Audi 1.9 TDI engine: IT IS FORBIDDEN TO RUN WITHOUT DIESEL FUEL IN RESERVOIR !!!
This type of engine is equipped with pump-nozzle injectors which develop up to 2050 bar injection pressure !
Remove the fuel filter, fill up with diesel fuel and put in place. After that try to start the engine with accelerator pedal to the floor. Heed of electric starter motor temperature and battery status! After 40 - 50 sec. of start attempting wait for 1 - 2 minutes for battery and electric starter motor revival. After few starting attemptions the engine must start.

Jan 13, 2010 | 2004 Audi A4

1 Answer

My Audi A4 2000 TDI year 2005 has run on two tanks of Bio fuel recently and it hasn't recovered... started stuttering. Fuel system has been flushed out, air flow mand air flow meter has been changed but...


Audi 1.9 TDI and 2.0 TDI engines with pump-nozzle injection system, (year 2005 included), don't have permission to run with Bio fuel !!!
First you must replace fuel filter, interflow a quality Diesel additive (for 60 liters Diesel fuel dosage) fill up tank with Diesel fuel and run at least 300 km on highway at 3000-3500 rpm in 4-th gear.
I recommend you Foerch Diesel Reiniger System additive! I use this additive from 3 years ago and is certified on Audi TDI engines!

Dec 04, 2009 | 2000 Audi A4

5 Answers

Audi A4 1.9 TDI 130BHP engine power loss when it's raining


This is the correct solution..........replace the solenoid valve N239 as the electrical connection is affected by dampness. What happens is that the EGR valve is jammed open by the solenoid and this allows oxygen starved air into the cylinders (exhaust gas) and combustion is poor.
Quick fix is to disconnect the vac hose to the EGR actuator and block the end with a self tapping screw or pencil. This will work for sure....

Jul 19, 2009 | 2002 Audi A4

1 Answer

The engine start very hard when the engine is hot.


Check the coldstart sensor,it might think that the engine is still cold and the fuel mixture vill then be wrong,you can also have leaking injectors and then it dripps diesel into the cylinders.

Jul 12, 2009 | 2006 Audi A3

1 Answer

2001 A4 1.9 tdi, A/C quit working?


compressor seized up is the most likely ,but i could be wrong

Jun 23, 2009 | 2004 Audi A4

1 Answer

Passat 96 tdi , only runs for 2-3 seconds


i have 2 keys for my passat.with 1 key the engine runs perfect and with the other key the engine runs 2-3 seconds

Jun 16, 2009 | 1999 Volkswagen Passat

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