Mercedes-Benz 400SEL Idle Control Valve Replacement at your home or office.

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Idle Control Valve Replacement Service

How much does a Idle Control Valve Replacement cost?

On average, the cost for a Mercedes-Benz 400SEL Idle Control Valve Replacement is $442 with $347 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1993 Mercedes-Benz 400SELV8-4.2LService typeIdle Control Valve ReplacementEstimate$809.87Shop/Dealer Price$1001.09 - $1535.38
Show example Mercedes-Benz 400SEL Idle Control Valve Replacement prices

What is the Idle Control Valve all about?

The Idle Control Valve is designed to control and maintain a consistent engine idle speed. The valve helps counter anything the driver may do to put extra load on the engine, such as turn on the air conditioning, sound systems, lights, etc. When the car is cold, the idle control valve helps the engine start.

Keep in mind:

The idle control valve usually goes bad because of excessive carbon buildup in the intake manifold.

How it's done:

  • Scan the computer system in the car for codes.
  • Check for any vacuum leaks.
  • Check electrical connections.
  • Remove and replace the idle air control valve if faulty.
  • Clean carbon out of intake manifold ports.
  • Clear Engine Check light.

Our recommendation:

It is a good idea to get an air induction service performed every 3 to 4 years. This will ensure that the carbon does not build up on the valve. When you are getting the idle control valve replaced, your mechanic should inspect the vacuum lines for leaks. If the vacuum is leaking, it will mimic the symptoms of a bad IAC valve.

What common symptoms indicate you may need to replace the Idle Control Valve?

  • When the engine is idle, (car not moving), the engine may stall.
  • Excessive racing noise from the engine.
  • Engine may shut off if AC is turned on.
  • Check Engine light is on.

How important is this service?

The idle control valve is responsible for maintaining a constant and consistent engine. It achieves this by ensuring that the idle speed is always constant. Many factors – such as a cold engine, the radio, or the air conditioning – effect the idling speed of the engine, so the idle control valve neutralizes these outside factors, and makes sure that the engine is consistently idling at a stable speed. When the idle control valve malfunctions, the idling speed is no longer regulated. This means that if you turn on the radio or the air conditioning, which requires power, your engine may stall. It also means that your vehicle may not be able to turn on.

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Attila

19 years of experience
933 reviews
Attila
19 years of experience
Mercedes-Benz 400SEL V8-4.2L - Car starts and then dies - Union, New Jersey
First his did great job and finally he said the issue was ignition coil.

Edgar

8 years of experience
202 reviews
Edgar
8 years of experience
Mercedes-Benz GLE350 V6-3.5L - Spark Plugs - Austin, Texas
This was the second time I've used Edgar, and everything went as smoothly as the first time. A couple of the spark plugs are a big pain to access, but he got the work done and at a small fraction of what the dealership wanted. Will keep using him for other work!

Joe

43 years of experience
824 reviews
Joe
43 years of experience
Mercedes-Benz C240 V6-2.6L - Throttle/Accelerator Pedal Position Sensor - Tampa, Florida
Second visit from Joe, and the service was excellent!

Chris

22 years of experience
2247 reviews
Chris
22 years of experience
Mercedes-Benz GL450 V8-4.6L - Battery - Newport Beach, California
Very easy to work with and so efficient with his time!

Excellent Rating

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5,256
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