BMW 2800CS 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

(6,785)

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

(6,785)

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 2800CS 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
1970 BMW 2800CSL6-2.8LService typeEngine idle speed is high InspectionEstimate$114.99Shop/Dealer Price$132.49 - $145.62
1971 BMW 2800CSL6-2.8LService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
1969 BMW 2800CSL6-2.8LService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
1968 BMW 2800CSL6-2.8LService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.48 - $125.60
Show example BMW 2800CS 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

(6,785)

Rating Summary
6,327
206
60
45
147
6,327
206
60
45
147

Steve

37 years of experience
149 reviews
Steve
37 years of experience
BMW 750i V8-4.8L - Brake Pads Replacement (Front, Rear) - Fremont, California

Mike

26 years of experience
175 reviews
Mike
26 years of experience
BMW 328i xDrive L6-3.0L - ABS Speed Sensor Replacement (Driver Side Rear) - Farmington, Michigan
Professional guy Competent Easy to work with

Raymond

27 years of experience
248 reviews
Raymond
27 years of experience
BMW 528i L4-2.0L Turbo - When I slow down and stop the car, engine shuts off - Victorville, California
First time using this service and will continue going forward! Raymond arrived early which I appreciate because I have a tight daily schedule because of work. Raymond was very professional and very patient while I was explaining the issue with my vehicle. After Raymond completed the service and quoted me other required services , I will continue to use his services. I feel that Raymond was honest and did not try to up sale me or just try to sale me service I don't need like the dealership's and other Mechanic's I've come across before. Honest trustworthy and efficient service is what Raymond provides ,which is rare now day's and that's including dealerships and all. Happy Customer!! Thank you!!! Kind Regards, Carlos

Allen

36 years of experience
471 reviews
Allen
36 years of experience
BMW 328xi L6-3.0L - Starter - Longwood, Florida
Allen made my day! showed up earlier than actual appointment time and he fixed everything very quickly. He is so kind to work with and very knowledgeable about what he does. Very honest and strong for detail. he even cleaned my corrosive battery entrance like he treats his car and explained everything. Also he kindly advises what's next issue that I have to concern in the car.

Excellent Rating

(6,785)

Rating Summary
6,327
206
60
45
147
6,327
206
60
45
147
Number of BMW services completed
74635+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

Recent articles & questions

P3458 OBD-II Trouble Code: Cylinder 8 Deactivation/Intake Valve Control Performance
P3458 means that the MAF, MAP, or TP sensors have detected a problem with the cylinders due to electrical, sensor, or oil pressure issues.
10 Best Stores to Buy Auto Parts in Monterey, California
Automotive technicians rely on auto parts stores to add and replace car parts. The best auto parts shop in Monterey is Kyle Racing.
How to Replace an Anti-Lock Control Relay
ABS brakes use an anti-lock control relay to regulate the pressure of the brake fluid in the ABS system. The control relay breaks down over time.

Where is the camshaft position sensor be located on a 2011 Kia Optima EX GDI?

Hello - the camshaft position sensor (https://www.yourmechanic.com/article/how-to-replace-a-camshaft-position-sensor-by-mia-bevacqua) is located on the drive-side end of the top of the engine on your vehicle. It is a round black plastic housing - golf-ball size - attached to the engine with one bolt,...

My 2003 Acura TL will start right up but when I put it in gear it cuts off. It will crank back up but I get the same reaction when

Several possibilities could account for this. The torque converter could be locked up. To get an "indication" of that possibility, you could try raising engine speed to around 1,800 RPM and then, with a clear path ahead, put the gear...

Rough idling

Rough idle can be due to a bad tank of gasoline, dirty fuel injectors, incorrect idle speed, exhaust restrictions, vacuum leaks, incorrectly installed or damaged spark plugs, a defective or clogged fuel pump or fuel filter, failing electrical components such...

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