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2001 audi a3 1.8t starting problem

I have a 2001 1.8t audi A3 it has a starting problem, had a diagnostics check and camshaft sensor was showing up implausible, air flow sensor intermittent, Temp sensor implausible, and cylinder misfire, the timing has been checked and fitted a new camshaft sensor crankshaft sensor and temp sensor but prob is still there i was deciding whether to change the air flow sensor as well what do u think? Also what could be the cause for these things to happen

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I accidentally tossed out my 1993 Audi 100CS radio code
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After changing my headgasket on the motor we reconnected the battery supply & found the radio on SAFE mode.

AUZ1Z7N2020175 is the Radio #

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j_del
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SOURCE: Audi A3 2002 model auto - temperature gauge not working

Change the coolant temperature sensor. They're known problem areas on other Audi models, including my A4. The part runs about $20 from www.ecstuning.com and it's the problem probably 75% of the time. If that's not a fix, it could be a thermostat that is stuck open and causing the gauge to never read warm.

Posted on Aug 11, 2008

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SOURCE: audi A3 centre armrest has

hi my car comes with a centre armrest but it use to adjust to different hights but its not doing it now

Posted on Sep 21, 2008

j_del
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SOURCE: audi a3 1.8t dump valve fitting

A dump valve replaces the recirc valve. Did you see the reply to your prior post on this topic that I put up the other day? You can do it but it'll cost you your catalytic converter and O2 sensors - that has been proven out many times in the past. If you don't care about that and don't mind spending $1200-1500 every year or 18 months to replace those parts, then go to www.audiworld.com or www.audidiy.com and look in the tech areas - there are step by step procedures there that walk you through recirc valve replacment. They'll show you how to fit an aftermarket recirc valve, but you can follow that procedure to do a BOV as well.

Seriously though, as I said before, some cars are fine with BOVs but Audis are not. You're going to cost yourself a LOT of money just for the sneeze sound and slightly slower turbo spool. Your car and money though so it's your decision.

Posted on Oct 19, 2008

chet_02
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SOURCE: audi a3 electric power steering not working in one direction

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Posted on Mar 01, 2009

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2006 Audi A3, Well put new sparks plugs, coils packs, and crankshaft sensor on still no start. Get a code reading P0100, and P0343. So put a camshaft sensor on. NO Start. Its not the battery.


100 is the MAF sensor. 343 is the cam sensor. It need s to put on a scanner. I read numbers. Maf could be it, not likely. most likely you need a timing set.

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It could be an immobiliser fault or it could be a wiring or connection problem or perhaps the crank or camshaft sensors are suffering a temporary failure.

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They normally last long, they need to check that the rotor cup that the speed sender gets its signal from is not damaged and has the correct spacing. Also check for oil contamination from leaking cam seals.

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Toyota ipsum 2002 check light comes on with code P1346.


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Camshaft sensor


Do you know if the engine timing is correct? If you get the timing a tooth out you very similar issues, has the cambelt been replaced recently - or is it over due??
Another posibility is the cam chain adjuster. This is oil pressure fed and I think controled by a solnoid, it applies a force between the chain that drives the inlet camshaft from the cambelt driven exhaust camshaft. (Making any sense? Let me know if you want me to simplify) This operating correctly advances and retards the valve timing, when faulty it can make it incorrect. Non start is a fault caused, but more often they become very noisey.
The cam chain adjuster is fed oil when the car is started, you can breifly here it before it has reached operating pressure on normal start up, sounds like a diesel knock for a second, then goes, this is normal. If it continues, its more than likely faulty.
Let me know if you want any more info. If the sensor and wiring is good you'll probably have a timing issue.

Mar 24, 2009 | 2005 Audi A3

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Audi A3 2001 fan running all of the time, Temp guage not moving from start position and EML on? already replaced Coolant temp sensor? Any ideas?


ON ALL A4 MODELS AND I THINK THE A3 , THE ENGINE COOLANT TEMPERATURE SENSOR IS LOCATED AT THE REAR OF THE CYLINDER HEAD,WHILST ON SOME ENGINES, A SECOND SENSOR IS FITTED TO THE RADIATOR OUTLET PIPE...HOPE I WAS OF SOME HELP TO YOU....

Feb 24, 2009 | 2004 Audi A4

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