severe loss of power in fast lane on motorway - Club Touareg Forums
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post #1 of 24 Old 06-08-2013 Thread Starter
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severe loss of power in fast lane on motorway

Hi Guys
I have experienced loss of power several times a few weeks ago and then nothing since until today.
Symptoms are complete loss of power when engine is put under load, say like accelerating fast. Today it was not funny at all.
It happened while i was in the fast lane driving 120k accelerating past cars with a line of cars behind me.
I lost power same as the last times but more noticeable because of the speed.
I had to wait to find a gap between the cars to my left while losing speed very quickly in the fast lane. Really no joke at all. I had an orange warning light come on like 2 circles locked together. Do not have a clue what this means.
Anyone any ideas or know what the issue is and the solution.
thanks
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post #2 of 24 Old 06-08-2013
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I bet you will get a warning message "Check Engine" or something like this on your dashboard soon without scanning for errors. Check air filter as a first step.
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post #3 of 24 Old 06-08-2013
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You need to get a scan, but when mine went into limp mode and the preheat warning light came on I was in town so I did not experience the large loss of power you did.

Scan showed these two faults:

5183 - Particulate Trap Bank 1
P2002 00 [104] - Efficiency Below Threshold
Intermittent - Confirmed - Tested Since Memory Clear

5162 - Diesel Particle Filter; Differential Pressure Sensor
P2453 00 [104] - Implausible Signal
Intermittent - Confirmed - Tested Since Memory Clear

Dealer replaced one pressure sensor on the DPF.
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post #4 of 24 Old 06-08-2013
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Quote:
Originally Posted by tmann45 View Post
You need to get a scan
I mean obviously something wrong with the engine performance and if the owner continue to run the engine he will finally hurt it. In my particular case I had same symptoms (after a more that 2000 km non-stop highway trip). There was a mesh filter (2.5l engine) at the air intake. They simply cropped it too.
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post #5 of 24 Old 06-08-2013
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x2 on the scan.

With a problem such as you describe you needed to be in the garage and getting it sorted the very first time it happened . . .
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post #6 of 24 Old 06-08-2013
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Is it a diesel or petrol...that symbol on the dash in the picture above looks like a glow plug...+1 on the vagcom scan asap...
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post #7 of 24 Old 06-08-2013
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I assumed TDI due to OP's description of the warning light, "orange warning light come on like 2 circles locked together", but that is also why I posted the pic, to ensure we are on the same page.

Clarification on my original statement, "You need to get a scan, but when", should read, "You need to get a scan to tell exactly what the problem is, but when".

Njord, I don't understand the "They simply cropped it too." Would you explain to this dumba$$ American?

I would think that limp mode and glow plug warning light could be several things wrong, that is why I posted my error codes. If you get a scan and it shows the same error codes you will know what the dealer did to fix mine.

Did the Euro 2007 TDI even have diesel particulate filters?
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post #8 of 24 Old 06-08-2013 Thread Starter
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severe loss of power in fast lane on motorway

Hi Guys

Thanks for all the info, really great.
I have to say you guys are quick with the responses.
I have only owned the Touareg for the past 2 months, its a 2007 3.0 v6 auto.
Its a big come up from my last vehicle which had none of the bells and whistles, but i still loved it
So far i am lost because i have no manual (dealer problem ) to check any thing out and still don't know half the stuff on the Touareg.
Really weird thing to happen and dangerous for such a modern vehicle.
The first couple of times it happened i did go to the main dealer and because there was no apparent warning light, he said come back if it happens again.
Which i will do on Monday morning
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post #9 of 24 Old 06-08-2013
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Quote:
Originally Posted by tmann45 View Post
Njord, I don't understand the "They simply cropped it too." Would you explain to this dumba$$ American?
tmann45,
You're not necessarily dumba$$ American. Most probably I expressed myself incorrectly in English. When introducing myself I asked readers to seek clarification from my side if they do not understand me. https://www.clubtouareg.com/forums/f8...ner-79903.html Back to the story: While in transit I phoned nearest official autohaus. Explained them the situation and my concerns. They said continue at a low speed. Finally they replaced the air filter (it was heavily contaminated/soiled) and apart from this they cropped that mesh screen. This screen recognized here in Russia as "useless". As I understood the main purpose of this mesh is to prevent water droplets from entering the system (works like demister). But it get clogged very often. And it is very dangerous to run the 2.5 engine with restricted air supply. Under such circumstances (air supply deficiency) the turbine can create so deep vacuum that this will lead to fatal damages (the turbocharger cage will burst). Hope, now my message is clear.
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post #10 of 24 Old 06-08-2013
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I hate to admit it but your English is better than a lot of Americans.

I understand screen/demister used as a pre-filter now and assume cropped would mean that they cut it out. Thanks.
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