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

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(2,399)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(2,399)

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 Coupe 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
1991 Audi Coupe QuattroL5-2.3LService typeEngine idle speed is high InspectionEstimate$114.99Shop/Dealer Price$132.49 - $145.62
1990 Audi Coupe QuattroL5-2.3LService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
Show example Audi Coupe 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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Audi mechanics

Real customer reviews from Audi owners like you.

Excellent Rating

(2,399)

Rating Summary
2,226
85
19
12
57
2,226
85
19
12
57

Brikk

18 years of experience
389 reviews
Brikk
18 years of experience
Audi Q7 V6-3.6L - Battery - Charlotte, North Carolina
Brikk was great! Timely, courteous, knowledgable and efficient.

Miguel

21 years of experience
232 reviews
Miguel
21 years of experience
Audi allroad L4-2.0L Turbo - Brake Pads Replacement (Front) - Fair Lawn, New Jersey
Miguel is very professional mechanic. He called me in advance about his coming. He brought the quality parts (brakes pads and rotors) and done his job quickly and of great quality. I tested the brakes after the replacement and they were efficient and very silent. I would recommend him very much.

Travis

13 years of experience
586 reviews
Travis
13 years of experience
Audi Q5 V6-3.0L Turbo - Pre-purchase Car Inspection - Stillwater, Minnesota
Very responsive, was flexible to make the appointment work after an initial booking issue. Very thorough, detailed and communicative with texts, photos and voice messages. Great service!!

Tien

23 years of experience
903 reviews
Tien
23 years of experience
Audi A6 Quattro V6-2.8L - 45,000 Miles Maintenance Service - Lafayette, California
Tien was courteous, efficient and clearly communicated the issues with car and my options going forward. It was money well spent.

Excellent Rating

(2,399)

Rating Summary
2,226
85
19
12
57
2,226
85
19
12
57
Number of Audi services completed
26389+
services done by our mechanics
TOTAL NUMBER OF EXPERT Audi MECHANICS
700+
experts on our platform

Recent articles & questions

Can I Drive with Damaged or Missing Mirrors?
It’s critical that you’re able to see behind and beside you while driving. This is accomplished by using the rearview mirror, or one of...
What are the Best Car Tire Brands to Buy?
Car tires come as all season passenger tires, summer passenger tires, on-road light duty truck and SUV tires, and off-road truck and SUV tires.
B2105 OBD-II Trouble Code: Throttle Position Input Out of Range Low
B2105 trouble code means there's a problem with the throttle position input range in a 4WD system, caused by a loose harness or short circuit.

Where is the car jack located?

The car jack is located with your spare tire, in the trunk. To access the jack, open the trunk, and remove the luggage floor cover.

Grinding noise, no acceleration, and filthy transmission fluid

Hello. If your batteries are dying that fast, then something is staying on electrically in your vehicle. If you do not have power windows or door then this should make it simple to diagnose. I typically start by checking to...

Car doesn't go straight yet, no mechanical failure can be found

The vehicle is not properly aligned. Prior to performing an alignment be sure the suspension fully checks out and is not worn. Also, if you have any suspicion of frame damage that should be evaluated at the time of the...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com