2002 Audi S4 Question Engine Stalling

Tiny
SDBARBIFOX
  • MEMBER
  • 2002 AUDI S4
  • 6 CYL
  • AWD
  • MANUAL
  • 127,000 MILES
I have a Audi S4 2002 with 127K miles. Over the past 2 or 3 year the car seems to stall within a short distance (with in 10 mins or so) from a cold start at home or after sitting for a few hours or will not start after a quick drive to the store. I have started to see patterns like more frequently on warmer days. Other observations include the coolant gauge gets to normal and the oil temp gauge gets to 200F about 25F from the normal and the car seems to stall at this point - at slower speeds or at intersections. At the Stall point only light that comes on it the battery like. I would then have to wait from 10 mins to over 60 mins before the engine will restart. My observation at this point are that the oil gauge temp has cooled down to about 150F or so and the coolant gauge is still at normal or just move off the normal setting. This will happen once a day this after that all is fine till the next dayâ� ¦
Are the any sensor or relays that protect the engine from overheating maybeâ� ¦or other things I can look into.
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Thursday, June 18th, 2009 AT 11:10 AM

3 Replies

Tiny
KHLOW2008
  • EXPERT
Hi SDBArbifox,

Thank you for the donation.

Since problem seems to be temperature related, I would suggest checking the Engine Coolant Temperature sensor. It coud be faulty providing wrong info to the Power control Module.

Is the Malfunction Indicator Light showing?


http://www.2carpros.com/forum/automotive_pictures/192750_ECT02AudiS4_1.jpg

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Thursday, June 18th, 2009 AT 12:24 PM
Tiny
SDBARBIFOX
  • MEMBER
Only Light I get is at the time of the stall and it's the battery light on the dash.(Battery is a Bocsh and Its less than 1 yr old)

I have 3 followup question. Would this cause the car to randomly stall, since the temperature is only a untrained observation.

In the picture you sent can you give me more info to where it is located?

Also would a temp problem like this though a enhine Fault code that would light up on the car dash.
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Thursday, June 18th, 2009 AT 2:32 PM
Tiny
KHLOW2008
  • EXPERT
Sorry for the delay in answering. I tend to have connection problem only on Fridays. Seems my ISP wants to rest on Fridays :(.

ECT is located in coolant pipe at rear of right cylinder head.


http://www.2carpros.com/forum/automotive_pictures/192750_Underhood_component02S4QuattroFig12_1.jpg



http://www.2carpros.com/forum/automotive_pictures/192750_ECT02AudiS4Round_1.jpg



http://www.2carpros.com/forum/automotive_pictures/192750_ECT02AudiS4Square_2.jpg



http://www.2carpros.com/forum/automotive_pictures/192750_ECT02AudiS4spec_1.jpg



NOTE: Vehicles may be equipped either a square or rounded ECT sensor.

However if sensors are faulty, it could have the fault recorded in the ECM. I would sugggest getting a scan done to check if any codes are stored.

Most large parts outlets provides the scanning service either free or for a nominal fee. If any codes are found, let me know the exact trouble code.

One thing that you should do is to check what is missing when engine could not be started. From there we would have an idea what could be the cause.

I have a link here which would be helpful and check the link that aptly describes your condition. Check them out and let me know what you find.

http://www.2carpros.com/kpages/first_things.htm
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Saturday, June 20th, 2009 AT 9:34 AM

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