Audi 1993 Cabriolet, 5-cylinder problem. Need help to figure out what might be wrong?

[ali_shah]

Hi,
I am new to the forums! I hope you guys can help/guide me to solving a problem I have been having for several months now.

I have an Audi 1993 model, 5-cylinder automatic-gear Cabriolet. I live in Dubai, UAE. I bought this car second hand a couple of years ago, and like the car.

A few months ago I started getting a problem that suddenly the engine stops while driving. I have no problem in starting the car, and it can run 10-15 minutes (sometimes more) without problems, and then suddenly the engine stops, as if its run out of fuel.

I've taken it to many garages around town, and as its an old car, and an unusual 5-cylinder one, there are not many people who know how to diagnose it. Everyone tells me that they need to use the Audi computer to diagnose the problem, but no one is able to connect a computer or have one that connects to this model. (I doubt they had computer diagnostics on the 1993 model. Am I wrong?). I checked at 3 workshops that do routine Audi work.

Someone said its the fuel-injector. I took it one Audi mechanic who said that the problem is with the fuel pump, as he inspected the fuel injector and head and said that looked fine. I got the fuel pump replaced but still same issue. Now, he says maybe it is something electric.

It feels like a wild-goose chase.

I don't want to take it to the dealership, as they probably will charge me more than the cars price just to look at it.

Can anyone knowledgeable in these cars give hints/tips on what might be wrong or what to look at?

Your help will be greatly appreciated! I really want to drive my audi hood down as the weather is now! (in this part of the world).

thanks!

[Sharkfin]

Since no one else has been able to help you I highly suggest you have it looked at at the dealership. They can tell you what's wrong and then you can choose whether or not to get it fixed there right?

[urS6Plus]

its your camshaft position sensor. when it gets warm, it stops working. its common to have these go bad. get it changed out and you should be all set.

[ali_shah]

Thanks!
For a laymen in car engines, can you tell me where this "camshaft position sensor" is found?
If you can put me to some link that shows engine layouts labeled, or something that would help me greatly.

[ali_shah]

I told my mechanic about this. He is now trying to find a camshaft position sensor but not finding it easy to find the one needed by my car model.

How does one find these parts?
My car is an Audi 1993 Cabriolet 5-cylinder.

I looked at various websites, but could not find a part no or something for my model.
If anyone can help here, I would appreciate.

thanks!

[urS6Plus]

I told my mechanic about this. He is now trying to find a camshaft position sensor but not finding it easy to find the one needed by my car model.

How does one find these parts?
My car is an Audi 1993 Cabriolet 5-cylinder.

I looked at various websites, but could not find a part no or something for my model.
If anyone can help here, I would appreciate.

thanks!

it should be the same 10V turbo that is in an audi 5000 sport quattro. the sensor is behind the camshaft.

[ali_shah]

Thanks! But do you know any website that will help me find and order this part?
At a reasonable cost?

Also, is there a way to find out what the part no is from any repair manual? People talk a lot about Bentley repair manuals here, but is there a way to find this online somehow?

Reason is that my local parts supplier cannot find this part from his network of suppliers.

thanks,
Ali

[YODASFRO]

There is no cam position sensor on the 5 cylinder motor only on the v6. It could be the idle stabilizer valve(ISV) or as simple as a vacuum leak. You can use http://www.vagcat.com to look up pn#'s just register it's free.

[ali_shah]

Whats the way to figure out if its a vacuum leak, and how does one fix that?

Also, where does one find the idle stabilizer valve(ISV) ?
I searched vagcat and cannot find any part with that name. Which part-group should I be looking in for this? (BTW, the site is great with pictures that are great for a guy like me)

As you can see I am not a car mechanic. Just an end-user who needs to get the car repaired and all the mechanics I've taken it to are clueless on the problem.

On another forum someone mentioned it could be a problem with the 'distributor'. Any thoughts on that?

[YODASFRO]

Could be the distributor but when the hall sender fails it tends to cause a no running condition not a stalling issue. The ISV is # 5 in this link http://www.vagcat.com/epc/cat/au/ACA/1993/40/49/445767/ As far as checking for vac leaks, check all the hoses connected to the ISV. See this pic the ISV is the silver thing circled in red.

[ali_shah]

Thanks! Sorry for not replying earlier.
From VAGCAT I found this is the #5:
BASIC GERMAN PRICELIST
part number 034133455B
Partnumber Title Price
034133455B VENTIL 181.5 Euro

Is this it? Quite expensive part to order in case its wrong :(

Should one look elsewhere as well?
What about used parts? Should one stay away from them?

[YODASFRO]

Nothing wrong with used parts beats having pay lots of $$$ for new parts.