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Audi TT Quattro Engine idle speed is high Inspection at your home or office.

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Engine idle speed is high Inspection Service

How much does a Engine idle speed is high Inspection cost?

On average, the cost for a Audi TT Quattro Engine idle speed is high Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2009 Audi TT QuattroV6-3.2LService typeEngine idle speed is high InspectionEstimate$114.99Shop/Dealer Price$132.49 - $145.62
2009 Audi TT QuattroL4-2.0L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2018 Audi TT QuattroL4-2.0L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2000 Audi TT QuattroL4-1.8L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.48 - $125.60
2006 Audi TT QuattroV6-3.2LService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.55 - $125.72
2010 Audi TT QuattroL4-2.0L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2020 Audi TT QuattroL4-2.0L TurboService typeEngine idle speed is high InspectionEstimate$99.99Shop/Dealer Price$109.87 - $117.28
2001 Audi TT QuattroL4-1.8L TurboService typeEngine idle speed is high InspectionEstimate$99.99Shop/Dealer Price$117.94 - $131.39
Show example Audi TT Quattro Engine idle speed is high Inspection prices

What is engine idle speed and how is it maintained?

Engine idle speed is the speed, measured in revolutions per minute (RPM) an engine is designed to run at when the engine is fully warmed up and the vehicle is stopped in park or neutral. Typically, the idle speed will be set at a value in the range of 600 to 800 RPM, but the exact value will depend on the number of engine cylinders and whether the vehicle is equipped with a manual or automatic transmission. Idle speed is maintained by the throttle body working in conjunction with the vehicle’s powertrain control module.

When to check for idle speed issues:

  • RPM on dash gauge does not match OEM specification. Many cars have RPM gauges. If the engine speed displayed on the gauge does not match the original equipment manufacturer (OEM) specification on the underhood label, there is probably something wrong.
  • Engine is idling higher than normal. If there is no RPM gauge but the engine sounds like it is turning faster when idle, a mechanic can use an instrument to measure the actual engine speed.
  • Harsh engagement in drive. If the idle speed is too high, the vehicle will jump forward when placed in drive.
  • Excessive brake effort is required to hold vehicle at a stop. If idle speed is normal, only a very light force on the brake pedal will be necessary to prevent forward motion in drive.

How do mechanics adjust or repair incorrect idle speed?

The repair procedure depends on the exact cause of the high idle. The below lists common causes of high idle and in each case, the appropriate vehicle system, components, and parts involved would be inspected, removed for repairs, and/or replaced as needed.

Faulty Fuse: In the majority of vehicles, engine idle speed is controlled via an idle control valve (ICV). A faulty or blown fuse in other electronically controlled systems can cause the Idle Air Control (IAC) motor to malfunction, leading to a higher than normal engine idle speed.

Faulty Idle Air Control Valve (ICV): Some cars are equipped with an idle air control valve to maintain idle speed. This part can malfunction due to excessive carbon buildup in the intake manifold.

Vacuum Leak: On any engine, a vacuum leak will cause a high engine idle as the oxygen sensor detects lean operation and the engine computer then tries to compensate, which can result in abnormal idle. Malfunctioning Throttle: A malfunctioning throttle system can cause both a high or low idle as well as an engine stall. A dirty air intake or cracked air intake tube is often the culprit. Computer Malfunction: If the powertrain control module is malfunctioning, idle speed may be affected.

Is it safe to drive with incorrect idle speed?

No. High idle speed could make your vehicle difficult to control and were the idle speed to suddenly and unexpectedly increase to really high levels, you could experience unintended acceleration. Even moderately high idle speed, that is up to 1,200 RPM will make it more difficult to slow your vehicle when stopping and, once stopped, there remains the risk of your foot coming off the brake and the car jumping ahead. High idle speed also wastes gas and can be distracting as the vehicle does not perform as expected.

When addressing idle speed issues, keep in mind:

  • Related functions, such as the idle up function when the air conditioner is turned on, will be inspected by a mechanic during the repair of a high idle problem.
  • Prior to replacing parts, such as the throttle body, the mechanic will also need to rule out electrical causes of incorrect idle speed as well as physical causes such as vacuum leaks.

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(53)
Rating Summary
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Ediee

5 years of experience
48 reviews
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Ediee
5 years of experience
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by michael
Audi TT Quattro L4-1.8L Turbo - Coolant is leaking - Las Vegas, Nevada
Very informative and super nice person!

Mike

22 years of experience
90 reviews
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Mike
22 years of experience
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by Philip
Audi TT Quattro L4-1.8L Turbo - Inspection / Diagnostics - Dallas, Texas
Mike was very professional and was knowledgeable about VW/AUDI. I have nothing but compliments regarding the mechanic as he was knowledgeable, professional and likable. My only complaint is that the mechanic did not have access to the tools needed to fix the problem. YourMechanic advertises "Audi service by top rated Audi mechanics at the convenience of your home or office" so I assumed they would be equipped with the ECU tool as that is used to troubleshoot and manage the multiple systems that make up the car. The mechanic confirmed the diagnosis (Steering needing calibrated) by looking up the same code that I looked up when reporting the issue. He did offer insight as to the probable cause which was the recent replacement of the ABS/ESP controller requiring the steering be calibrated. Your Mechanic's recommendation was to take it to an Audi dealer. I'll end up at Kwik Kar or one of the independent VW/Audi shops that have the necessary VCDS tool. Summary: Knowledgeable mechanic explained why the warning light was on but was not equipped with the necessary tools to fix it. I can see using YourMechanic for items like fluid changes and brake pad replacement but can not see using them for anything requiring troubleshooting as so much requires the mechanic to interface with the ECU and connected subsystems.

Mario

7 years of experience
135 reviews
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Mario
7 years of experience
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by Jeffrey
Audi TT Quattro L4-2.0L Turbo - Tail Lamp Bulb Replacement (Passenger Side) - Chesterfield, Virginia
Very professional, efficient and courteous.

David

36 years of experience
195 reviews
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David
36 years of experience
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by Shawn
Audi TT Quattro L4-1.8L Turbo - Valve Cover Gasket - Los Angeles, California
On time, fast, experienced, and friendly. Couldn't ask for better.

Excellent Rating

(53)
Rating Summary
51
1
0
0
1
51
1
0
0
1
Number of Audi TT Quattro services completed
583+
services done by our mechanics
TOTAL NUMBER OF EXPERT Audi MECHANICS
700+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

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