Question about 2000 Audi A4

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Just know that engine looses power and takes a long time to build up speed. Hear the noise of the turbo and has just been told that it is the problem and may need a new one. just not able and sure if I can fork out the amount to purchase a new one

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The turbo is common on the tdi engine a fully recondition unit will cost you around £500, a second hand 1 will cost you from between £150-£250, but just be carefull as you will need the numbers from the turbo to match, good luck with this

Posted on Feb 03, 2010

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Don't know much about the turbo models and how they are setup but you might want to check the exhaust catalytic converter out too before you go spending money on turbo.. had to replace one on my 97 A4 2.6 which was seriously effecting power output.. All fine now

Posted on Feb 16, 2010

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I have a 3.0L navara turbo diesel and the turbo makes a whining noise but after a while it goes away wot can hhis be ??


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My 2004 passat TDI is giving me an exhaust leak sound noise.


This vehicle certainly does have a waste gate and they do have problems. However the waste gate diverts exhaust internally so you would not hear any unusual noise if it was being problematical. Also if the expected boost from the turbo did not match the actual boost there would be a check engine code and light on. If the hoses between the Turbo & the intake have a leak there may be a similar loss in power depending on the extent of the leak. It would be best to scan the engine computer to see if there are any Codes.

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WAS BLOWING BLACK SMOKE AFTER RUNNING GREAT, NOW.....


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the timing is too far advanced at the time of the noise, the "diesel knock" is detonation

or this could be from using fuel with a low octane rating, try premium or octane booster.

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Not the turbo on it's last legs. Check the hoses that come off of your turbo that go into the intake. Fords are famous for the hose clamps that hold the hoses in place breaking or coming loose and the woosh sound you hear is the compressed air being forced out of the hose somewhere when the turbo spools up. When this occurs you probably don't have quite the pulling torque you should. You will notice quite a drop in performance. Check the hoses or rubber boot connections from your turbo.

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It could be a lot of things, but (in general, not specific to this car) it sounds like a 'turbo' problem/turbo air leak. Can you also hear a high pitched whining sound, or something sounding like an high pressured air escaping? Check under the hood for hoses that may have worn through or become disconnected because of busted O-clamps.

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Volvo 1998 v70 tdi loss of power and a lot of black smoke lamda fuel light has been on since timming belts replaced been told its the turbo pump runnig at half is this possible and where is the turbo pump...


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If it only started after the timing belt was replaced there is a very good chance that the timing is off. The car has very specific instructions due to the variable valve timing.

There is also a chance that there is a hole in one of the turbo hoses. One way to check for a leaking turbo hose is to put the car in reverse and set the parking brake. have someone listen for a large air leak while you power stall the engine. if there is a leak it will make a lot of noise and you can feel for it with your hand, just don't burn yourself.

DO NOT POWERSTALL THE ENGINE MORE THAT THIRTY SECONDS AT A TIME AND NO MORE THAN TWICE. IT WILL GET VERY HOT VERY QUICKLY.

DO NOT SHUT OFF THE ENGINE RIGHT AFTER POWERSTALLING. THERE IS TO MUCH HEAT AND COULD CAUSE DAMAGE. LET THE ENGINE IDLE FOR THREE MINUTES AND IT WILL BE FINE.


I hope this helps

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1 Answer

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