BMW Z4 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

(136)

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

(136)

Engine idle speed is high Inspection Service

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

On average, the cost for a BMW Z4 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
2005 BMW Z4L6-3.0LService typeEngine idle speed is high InspectionEstimate$114.99Shop/Dealer Price$132.49 - $145.62
2013 BMW Z4L6-3.0L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2015 BMW Z4L4-2.0L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2004 BMW Z4L6-3.0LService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.48 - $125.60
2020 BMW Z4L6-3.0L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$105.02 - $112.55
2010 BMW Z4L6-3.0LService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2012 BMW Z4L6-3.0L TurboService typeEngine idle speed is high InspectionEstimate$99.99Shop/Dealer Price$117.28 - $130.25
2007 BMW Z4L6-3.0LService typeEngine idle speed is high InspectionEstimate$99.99Shop/Dealer Price$117.94 - $131.39
Show example BMW Z4 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 BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(136)

Rating Summary
123
4
3
2
4
123
4
3
2
4

Anthony

7 years of experience
130 reviews
Anthony
7 years of experience
BMW Z4 L6-2.5L - Washer fluid does not spray onto windshield - Carmichael, California
This was the 3rd time I had a mechanic come out for the same problem. Anthony was professional and did a great job at troubleshooting the problem.

Frank

21 years of experience
12 reviews
Frank
21 years of experience
BMW Z4 L6-2.5L - Battery will not hold a charge - Los Angeles, California
Frank was great. He showed up on time and diagnosed the issue with my car quickly. He also explained the issue to me and answered all my questions.

Chris

16 years of experience
419 reviews
Chris
16 years of experience
BMW Z4 L6-2.5L - Starter - San Francisco, California

Tinashe

13 years of experience
609 reviews
Tinashe
13 years of experience
BMW Z4 L6-2.5L - Drive Belt Tensioner - Marietta, Georgia
Professional, friendly, timely, and knowledgeable. So much better experience than with any dealership service department.

Excellent Rating

(136)

Rating Summary
123
4
3
2
4
123
4
3
2
4
Number of BMW Z4 services completed
1496+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

Recent articles & questions

How Much Power Does the AC Draw From the Engine?
Most cars these days come with air conditioning as a standard feature – gone are the days...
The Traveler’s Guide to Driving in Puerto Rico
Puerto Puerto Rico is a beautiful place that has a lot to offer vacationers. Since it is a commonwealth of the United States, there is no need to have a passport to visit, which can make vacationing easier. All you...
B1949 OBD-II Trouble Code: Climate Control Water Temperature Sensor Circuit Failure
B1949 means there is a failure in the circuit for the climate control water temperature sensor, likely due to an electrical problem somewhere.

Car acting like it has no fuel, even though it has some gas in it, won't start.

If the car wont turn over your battery terminals may be dirty and have a bad connection. Clean the terminals and then try to start the car again. If it doesn't start or turn over then I would have a...

I have replaced the battery and alternator and the charging system light keeps popping on and then the car dies after a day or two

The problems you are describing do seem to lead me back to the charging system circuit. If the vehicle shuts down because of a dead battery (https://www.yourmechanic.com/services/battery-replacement), the problem has to be in the charging system as it is designed...

hit a pot hole and suddenly my steering jerks violently to the left

Hi there. When a pot hole is hit, there are several problems that can occur. In some cases, the wheel will bend, wheel bearings can become damaged, or steering and suspension components like tie rods, CV joints, struts and strut...

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 (844) 997-3624 · hi@yourmechanic.com