Audi RSQ3 Stalling: Bad IAC Valve Causes Rough Idle

Having experienced similar stalling engine symptoms on my Audi RS4 (2016), I can confirm this is likely related to the IAC valve or throttle body issues. The engine stalling during idle and unstable RPMs are classic signs of a contaminated air intake system. In my case, the IAC valve was heavily contaminated with carbon deposits, causing irregular idle speeds especially during cold starts. The solution required a complete cleaning of the throttle body and IAC valve assembly. The mechanic also found that the air intake system needed thorough cleaning to prevent future buildup. This is a serious issue that should be addressed promptly, as continuous engine stalling can lead to additional problems with fuel delivery and engine performance. The repair involves: 1. Removing and cleaning the IAC valve 2. Cleaning the throttle body 3. Inspecting the entire air intake system 4. Possible replacement of the IAC valve if cleaning doesnt resolve the issue 5. Computer system recalibration The check engine light indicates the cars computer has detected the irregular idle, confirming the diagnosis. Based on the symptoms and mileage of your RSQ3, this is very likely the same issue I encountered. Its recommended to have this serviced at a shop with specific experience with Audi fuel injection systems.

Having experienced similar stalling engine symptoms on my Audi RS4 (2016), I can confirm this is likely related to the IAC valve or throttle body issues. The engine stalling during idle and unstable RPMs are classic signs of a contaminated air intake system. In my case, the IAC valve was heavily contaminated with carbon deposits, causing irregular idle speeds especially during cold starts. The solution required a complete cleaning of the throttle body and IAC valve assembly. The mechanic also found that the air intake system needed thorough cleaning to prevent future buildup. This is a serious issue that should be addressed promptly, as continuous engine stalling can lead to additional problems with fuel delivery and engine performance. The repair involves: 1. Removing and cleaning the IAC valve 2. Cleaning the throttle body 3. Inspecting the entire air intake system 4. Possible replacement of the IAC valve if cleaning doesnt resolve the issue 5. Computer system recalibration The check engine light indicates the cars computer has detected the irregular idle, confirming the diagnosis. Based on the symptoms and mileage of your RSQ3, this is very likely the same issue I encountered. Its recommended to have this serviced at a shop with specific experience with Audi fuel injection systems.

Having experienced similar stalling engine symptoms on my Audi RS4 (2016), I can confirm this is likely related to the IAC valve or throttle body issues. The engine stalling during idle and unstable RPMs are classic signs of a contaminated air intake system. In my case, the IAC valve was heavily contaminated with carbon deposits, causing irregular idle speeds especially during cold starts. The solution required a complete cleaning of the throttle body and IAC valve assembly. The mechanic also found that the air intake system needed thorough cleaning to prevent future buildup. This is a serious issue that should be addressed promptly, as continuous engine stalling can lead to additional problems with fuel delivery and engine performance. The repair involves: 1. Removing and cleaning the IAC valve 2. Cleaning the throttle body 3. Inspecting the entire air intake system 4. Possible replacement of the IAC valve if cleaning doesnt resolve the issue 5. Computer system recalibration The check engine light indicates the cars computer has detected the irregular idle, confirming the diagnosis. Based on the symptoms and mileage of your RSQ3, this is very likely the same issue I encountered. Its recommended to have this serviced at a shop with specific experience with Audi fuel injection systems.

Thanks for sharing your experience with the IAC valve issue. Your symptoms definitely match what I was experiencing with my engine stalling at idle. My RSQ3 is now running much better after getting it fixed, though I had to wait a week for parts to arrive. Curious about the repair costs you faced, if you dont mind sharing how much you paid? Also, have you noticed any other engine idle issues since the repair was done? Just want to make sure Im watching for any potential follow-up problems with the air intake system.

Thanks for sharing your experience with the IAC valve issue. Your symptoms definitely match what I was experiencing with my engine stalling at idle. My RSQ3 is now running much better after getting it fixed, though I had to wait a week for parts to arrive. Curious about the repair costs you faced, if you dont mind sharing how much you paid? Also, have you noticed any other engine idle issues since the repair was done? Just want to make sure Im watching for any potential follow-up problems with the air intake system.

Thanks for sharing your experience with the IAC valve issue. Your symptoms definitely match what I was experiencing with my engine stalling at idle. My RSQ3 is now running much better after getting it fixed, though I had to wait a week for parts to arrive. Curious about the repair costs you faced, if you dont mind sharing how much you paid? Also, have you noticed any other engine idle issues since the repair was done? Just want to make sure Im watching for any potential follow-up problems with the air intake system.

Since getting my RS4 fixed last month, the idle control issues have completely disappeared. The bad idle air control valve was indeed the culprit, and after replacing it along with a thorough cleaning of the contaminated intake system, the engine runs perfectly smooth at idle speed. No more engine stalling or irregular idle speed problems. The total repair came to 425 Euro, which included the new IAC valve, cleaning service, and labor. While it wasnt cheap, the improvement in engine performance made it worthwhile. The mechanic showed me just how contaminated the air intake system had become, which explained the unstable idle symptoms. Its been about six weeks now, and I havent experienced any further issues with engine idle or stalling. The cold start behavior is particularly improved, no more rough idling when starting up in the morning. Just keep an eye on your air filter maintenance schedule to prevent future buildup in the intake system.

Since getting my RS4 fixed last month, the idle control issues have completely disappeared. The bad idle air control valve was indeed the culprit, and after replacing it along with a thorough cleaning of the contaminated intake system, the engine runs perfectly smooth at idle speed. No more engine stalling or irregular idle speed problems. The total repair came to 425 Euro, which included the new IAC valve, cleaning service, and labor. While it wasnt cheap, the improvement in engine performance made it worthwhile. The mechanic showed me just how contaminated the air intake system had become, which explained the unstable idle symptoms. Its been about six weeks now, and I havent experienced any further issues with engine idle or stalling. The cold start behavior is particularly improved, no more rough idling when starting up in the morning. Just keep an eye on your air filter maintenance schedule to prevent future buildup in the intake system.

Since getting my RS4 fixed last month, the idle control issues have completely disappeared. The bad idle air control valve was indeed the culprit, and after replacing it along with a thorough cleaning of the contaminated intake system, the engine runs perfectly smooth at idle speed. No more engine stalling or irregular idle speed problems. The total repair came to 425 Euro, which included the new IAC valve, cleaning service, and labor. While it wasnt cheap, the improvement in engine performance made it worthwhile. The mechanic showed me just how contaminated the air intake system had become, which explained the unstable idle symptoms. Its been about six weeks now, and I havent experienced any further issues with engine idle or stalling. The cold start behavior is particularly improved, no more rough idling when starting up in the morning. Just keep an eye on your air filter maintenance schedule to prevent future buildup in the intake system.

I finally took my RSQ3 to a different mechanic last week after reading about similar IAC valve issues here. The stalling engine problem was really starting to worry me, especially during cold starts. The new shop diagnosed it right away, dirty IAC valve and clogged air intake system causing the unstable idle speed. Total bill came to 380 Euro for cleaning and parts. Much better deal than what my usual mechanic quoted. After 3 days with the new mechanic, my engine idle is perfectly stable now. No more check engine light or stalling issues. The tech showed me the gunked-up old parts, pretty eye-opening to see how bad it had gotten. Definitely glad I switched mechanics for this repair. For anyone dealing with similar idle control problems, dont wait like I did. The engine stalling only gets worse and could lead to bigger issues. A clean IAC valve and intake system makes a huge difference in how the car runs.

I finally took my RSQ3 to a different mechanic last week after reading about similar IAC valve issues here. The stalling engine problem was really starting to worry me, especially during cold starts. The new shop diagnosed it right away, dirty IAC valve and clogged air intake system causing the unstable idle speed. Total bill came to 380 Euro for cleaning and parts. Much better deal than what my usual mechanic quoted. After 3 days with the new mechanic, my engine idle is perfectly stable now. No more check engine light or stalling issues. The tech showed me the gunked-up old parts, pretty eye-opening to see how bad it had gotten. Definitely glad I switched mechanics for this repair. For anyone dealing with similar idle control problems, dont wait like I did. The engine stalling only gets worse and could lead to bigger issues. A clean IAC valve and intake system makes a huge difference in how the car runs.

I finally took my RSQ3 to a different mechanic last week after reading about similar IAC valve issues here. The stalling engine problem was really starting to worry me, especially during cold starts. The new shop diagnosed it right away, dirty IAC valve and clogged air intake system causing the unstable idle speed. Total bill came to 380 Euro for cleaning and parts. Much better deal than what my usual mechanic quoted. After 3 days with the new mechanic, my engine idle is perfectly stable now. No more check engine light or stalling issues. The tech showed me the gunked-up old parts, pretty eye-opening to see how bad it had gotten. Definitely glad I switched mechanics for this repair. For anyone dealing with similar idle control problems, dont wait like I did. The engine stalling only gets worse and could lead to bigger issues. A clean IAC valve and intake system makes a huge difference in how the car runs.