Home Technical Discussions Audi 5000: 1984-1988, 100, 200: 1989-1991 (C3)

Audi 5000: 1984-1988, 100, 200: 1989-1991 (C3) 200 turbo


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Last Post: Jun 22, 2018 6:08 AM Last Post By: play
AndrewA4q96

Posts: 171
Registered: 01/23/04
200 turbo
Posted: Jun 29, 2004 3:46 PM
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My son has just purchased a 1990 audi 200 turbo, its has 150k miles, and had been religiously dealer serviced and generally looks to be in immaculate condition.

However, the car seems to exhibit a general rough idle. After comming to rest at red light, the revs will drop very low accompanied by a very rough, stumbling engine for a couple of seconds, then it will pick up again. The engine has never actually stalled while doing this, but its a little unnerving at the least. I don't belive that its the transmission dragging, as the engine idles rough even sitting in the driveway in park.

The car also appears to be lacking in a little 'get up and go' from my brief drive. Should you feel / hear any turbo activity with this model? I have never driven another 200 turbo, so have nothing to compare it against, but in other turbo cars I have driven there has always been a noticeable whoosh, over 3-5+k rev band. This car seemed a little flat throughout the range.

Can anyone give us any comments on these symptoms? Possible cause etc.

I am also thinking about getting a VAG-COM, seems a little more justifiable now that we have 2 cars in the family that could use it. Does this 200 model give up any diagnostic secrets when connected to a VAG-COM or is it too early a model to really report much?

Thanks in Advance,
fast928

Posts: 4,192
Registered: 03/01/02
Re: 200 turbo
Posted: Jun 29, 2004 5:17 PM   in response to: AndrewA4q96 in response to: AndrewA4q96
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I'm assuming this is a non-quattro!?

You could have a leak in the intake or the vacuum system. What max boost are you seeing??

Also, make sure the ISV is working correctly.

Read this entire website:
http://www.sjmautotechnik.com/TROUBLE_SHOOTING/trouble.html

My 5000 (same engine) doesn't make any turbo noise. There pretty small turbo's, IIRC, that one is actually smaller than mine. Not much you can do with VAG on that car. Depending on the VIN split you *MAY* be able to check engine codes with it. Otherwise, not much you can do with them.
audiqv8

Posts: 211
Registered: 05/21/04
Re: 200 turbo
Posted: Jun 29, 2004 5:23 PM   in response to: AndrewA4q96 in response to: AndrewA4q96
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Check the ISV (Idle stablizer Valve) for the low idle. Clean with carbureator cleaner and dry with compress air.

Check the hose that goes from the intercooler to the intake manifold usually rot or split underneath where it is hard to detect. What does your boost gauge say?? Are you getting 1.4+ bar??
AndrewA4q96

Posts: 171
Registered: 01/23/04
Re: 200 turbo
Posted: Jun 29, 2004 9:55 PM   in response to: fast928 in response to: fast928
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Attachment a200_split.jpg (26.1 KB)
Attachment a200_oiltemp.jpg (9.6 KB)
Attachment a200_brakepad.jpg (9.0 KB)
correct this is a non quattro.

I just took the car for a drive tonight, when its running on the highway its pretty good, things that I noted.

Max boost was 1.2, and this took some effort, 1.1 max most of the time.

Oil temp gauge never got above 90', this seems way too low to me?

What I believe to be the break pad wear indication came on, figures! (O) symbol on the dot matrix type display square. Can anyone confirm this, as the car came with no manuals.

Under the hood I noticed a ribbed hose with a large split, I know this can't be good! Could this be the causing some of the trouble, rough idle?

See attached pics, taken after a drive when the engine should of been well up to operating temperature.
5000turboman

Posts: 16
Registered: 01/24/04
Re: 200 turbo
Posted: Jun 30, 2004 12:57 AM   in response to: AndrewA4q96 in response to: AndrewA4q96
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Well the split in the hose isnt causing many of your problems if any at all...what you see there is the injector cooling fan, designed to prevent vapor lock in the injectors. It wouldnt be causing rough idle. That said it wouldnt be hard to replace it so you could have some nice injector cooling.
The boost is lower than it should be...there are a bunch of issues to check, ill list a few...but other people will have more.
-wastegate diaphragm
-turbo-intercooler hose split
-intercooler-TB hose split
-Vacuum hose split or popped off

there are whole lists of things to check for low boost, and that would be why it was feeling weak to you in the 3K-5k range. For a better list try sjmautotechnik.com

Nick

AndrewA4q96

Posts: 171
Registered: 01/23/04
Re: 200 turbo
Posted: Jun 30, 2004 8:44 AM   in response to: 5000turboman in response to: 5000turboman
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Many thanks for everyone's input. I'm going to have a good read of the

http://www.sjmautotechnik.com/

web site, this looks excellent.

Any confirmation on the break wear indicator or oil temp?
AndrewA4q96

Posts: 171
Registered: 01/23/04
Re: 200 turbo
Posted: Jun 30, 2004 8:57 AM   in response to: AndrewA4q96 in response to: AndrewA4q96
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I'm going to order the a Bently manual for this car, does anyone have any comments as far as CD or paper format? Which have the found easier to use? Does the CD contain identical information, same level of detail etc.
Any comments?
audiqv8

Posts: 211
Registered: 05/21/04
Re: 200 turbo
Posted: Jun 30, 2004 10:09 AM   in response to: AndrewA4q96 in response to: AndrewA4q96
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Yes the (0) is the front brake pads indicator, there are no indicator for the rear pads.

Did you check the hose (aka Michelin man, because of its shape). from the intercooler (looks like a radiator located behind the grill) to the IM (intake manifold)??
fast928

Posts: 4,192
Registered: 03/01/02
Re: 200 turbo
Posted: Jun 30, 2004 11:00 AM   in response to: AndrewA4q96 in response to: AndrewA4q96
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Temps look a little low. Since both oil and coolant seem low you "may" have a leaky thermostat. Not a whole lot of experience with these cars though. Just digging into mine.

Get the paper manual for this car. On this particular car the CD is just scanned images of the paper manual. The CD's for the newer cars are better, this is one that was done AFTER the paper manual which is why the scanning was done. Go paper on this one.
2passats

Posts: 95
Registered: 12/09/03
Re: 200 turbo
Posted: Jun 30, 2004 3:32 PM   in response to: AndrewA4q96 in response to: AndrewA4q96
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On my 1990 200TQ, the oil temp has only been as high as 1/4 of the way from the 2nd mark on the gauge (90deg?) to the 130 deg mark. And that has been on a hot summer day while pulling high boost over some steep mountain passes. Normally my oil temp is just slightly above that shown in your picture.
play

Posts: 13
Registered: 12/04/17
Re: 200 turbo
Posted: Jun 22, 2018 6:08 AM   in response to: AndrewA4q96 in response to: AndrewA4q96
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