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Audi A4 Maintenance and Repair

2120 messages,  Last post on Nov 06, 2009 at 2:14 PM

You are in the Audi A4 Forum. Your Hosts are pat & karens

What is this discussion about? Audi A4, Convertible, Sedan, Wagon


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#1850 of 2120
Re: central locking system [wilner] by rowlandj
Sep 26, 2008 (8:07 am)
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Replying to: wilner (Sep 25, 2008 9:09 pm)

Check your owners manual - there is likely a re-set procedure needed after changing the battery in the key fob.
#1851 of 2120
Re: Burns oil [Mr_Shiftright] by tom204
Sep 26, 2008 (12:11 pm)
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Replying to: Mr_Shiftright (Sep 26, 2008 7:58 am)

Spraying oil into the engine compartment would be a sign of a plugged PCV valve with oil squirting out. Here, the the valve, which is suppose to close when there is positive pressure in the in-take manifold is staying open. the only thing you will see is an oil residue on the cowling, near the oil fill cap and oil deposit on the ring at the end of the dipstick handle and the seat underneath it. If you have instrumentation you can also measure the pressure drop at the turbo output, where the 0.9 Bar normal pressure will drop by about a tenth, because of the leak into the crankcase. We are not talking about a very large amount of oil. My loss is about a quart in 1800-2000 miles. Used to be a quart every 3000 miles. There are lots of suggested fixes. Here is one http://www.golfmkv.net/blog/archives/23. Here is another http://deviantspeed.com/the-ultimate-20t-pcv-fix.
#1852 of 2120
Re: Burns oil [tom204] by Mr_Shiftright HOST
Sep 26, 2008 (1:33 pm)
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Replying to: tom204 (Sep 26, 2008 12:11 pm)

Thank you for that explanation, but still, a quart of oil is somewhere in the engine compartment (or am I misreading what you are saying?). Where does the oil go, this 1/2 quart every 1,000 miles? Either burn or leak, that's it right?
#1853 of 2120
Re: Burns oil [Mr_Shiftright] by tom204
Sep 26, 2008 (1:54 pm)
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Replying to: Mr_Shiftright (Sep 26, 2008 1:33 pm)

That is right. Some burns no doubt, though my tail pipe finger test comes up negative. Evaporation into the engine compartment might be expelled by the fan, though I have distinct oil deposit on the cowl around the oil refill cap. Audi states that even 1 quart per 1000 miles is acceptable engine performance and I am half of that.
#1854 of 2120
Re: Burns oil [tom204] by Mr_Shiftright HOST
Sep 26, 2008 (2:35 pm)
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Replying to: tom204 (Sep 26, 2008 1:54 pm)

Okay got it. I could live with a quart every 2,000 as long as it never got worse. I don't see Audi doing anything about it anyway, since it is "in spec".
#1855 of 2120
1998 Audi A4 Quattro Power Windows by mommyof1
Sep 27, 2008 (6:39 pm)
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I just purchased this 98 Audi A4 and I rolled the back drivers side window down and it wont go up. I can turn the key on and pulled the window switch and it will go up about 1-2 inches and automatically go down. I got it up by turning the key on and my husband held the window up and then I had to turn the key off and back on and it would roll up another 1-2 inches while he held it up. I had to do this til I got it completely up and it stayed. The drivers side front also don't work. I was wondering what might be wrong with it. Can anyone help me with this?
#1856 of 2120
Re: Burns oil [Mr_Shiftright] by tom204
Sep 27, 2008 (6:59 pm)
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Replying to: Mr_Shiftright (Sep 26, 2008 2:35 pm)

You are of course absolutely right. Audi won't do anything on the basis of the oil loss, after all there are some New Beetles, without turbo which use even more oil. However, Audi might be forced to do something because of the pressure leak from the turbocharged section of the manifold. Once the check-valve fails in the PCV assembly, the turbo can never develop the 0.9 Bar (about 13 psi) pressure. This impacts engine performance. All the proposed fixes on the net are addressing this performance loss, not the issue of oil loss. The oil loss is just a symptom.
#1857 of 2120
Re: Burns oil [tom204] by Mr_Shiftright HOST
Sep 28, 2008 (9:08 am)
Reply

Replying to: tom204 (Sep 27, 2008 6:59 pm)

Yes that makes perfect sense, thanks for explaining that further.
#1858 of 2120
'02 1.8T Electrical Problems by niteswmer2
Oct 01, 2008 (2:39 pm)
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Hi. I tried to do a 'search' but didn't have much luck.
 
I have an 02 1.8T with about 78k miles on it. I recently had to have the battery replaced and now I'm experiencing electrical issues. It started with the dome light and door open lights staying on after the doors were all closed. Then the windows stopped working. Sometimes everything would be fine, but the last few days the windows aren't working and the dome light remains on.
 
My local mechanic suggested there was some sort of TSB out there regarding water getting into the wiring harness. The numbers he gave me were: Recall: Group 97; Number 02-01, Date: Oct 2, 2002. Subject: Door Electrical Components Malfunctioning.
 
Has anyone experienced this problem? Is it a recall? Is it covered by Audi or should I expect to pay a large chunk of change?
 
Thanks.
#1859 of 2120
Re: '02 1.8T Electrical Problems [niteswmer2] by Mr_Shiftright HOST
Oct 01, 2008 (2:57 pm)
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Replying to: niteswmer2 (Oct 01, 2008 2:39 pm)

It's not a recall, it's a TSB: Dealer is under no obligation to repair this, and if he does, it's on your nickel as a rule, with a car this old.
 
Does this sound like your symptoms?
 
Group: 97
 
Number: 02-01
 
Date: Oct. 2, 2002
Subject:
Door Electrical Components, Malfunctioning
 
Model(s):
 
A4 2002
 
Condition
 
Electrical components operated via door control modules and/or switches malfunctioning such as window regulators, instrument cluster door ajar light, interior lights and door lights. Symptoms include:
^ Doors cannot be locked or unlocked by remote control.
 
^ Window regulators do not work.
 
^ Inside lights sporadically do not go out.
 
^ Display in cluster shows doors open when all doors are shut.
 
^ Door lights do not work. Vehicle may exhibit one or more of these symptoms at the same time.
 
May be caused by water ingress into the wire harness contact housing at the A-pillar or B-pillar which leads to corrosion of individual terminals.

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