Mercury Mariner Camshaft Position Sensor Replacement at your home or office.

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Camshaft Position Sensor Replacement Estimate for Mercury Mariner

Mercury Mariner Camshaft Position Sensor Replacement costs $155 on average.

CarServiceEstimateShop/Dealer Price
2006 Mercury MarinerL4-2.3LService typeCamshaft Position Sensor ReplacementEstimate$174.29Shop/Dealer Price$205.27 - $270.29
2005 Mercury MarinerL4-2.3LService typeCamshaft Position Sensor ReplacementEstimate$154.29Shop/Dealer Price$185.28 - $250.32
2009 Mercury MarinerL4-2.5LService typeCamshaft Position Sensor ReplacementEstimate$265.55Shop/Dealer Price$324.36 - $472.84
2011 Mercury MarinerV6-3.0LService typeCamshaft Position Sensor ReplacementEstimate$356.19Shop/Dealer Price$437.64 - $654.08
2010 Mercury MarinerV6-3.0LService typeCamshaft Position Sensor ReplacementEstimate$218.09Shop/Dealer Price$265.05 - $377.95
2008 Mercury MarinerL4-2.3L HybridService typeCamshaft Position Sensor ReplacementEstimate$154.29Shop/Dealer Price$185.28 - $250.32
2010 Mercury MarinerL4-2.5L HybridService typeCamshaft Position Sensor ReplacementEstimate$270.55Shop/Dealer Price$329.22 - $477.60
2007 Mercury MarinerV6-3.0LService typeCamshaft Position Sensor ReplacementEstimate$208.81Shop/Dealer Price$252.42 - $354.78
Show example Mercury Mariner Camshaft Position Sensor Replacement prices

Camshaft Position Sensor Replacement Service

What is the Camshaft Position Sensor all about?

The camshaft position sensor monitors the position of the camshaft and reports that data to the car’s onboard computer system. This computer system works with sensors and other devices to keep the engine running. With data from the camshaft position sensor (CPS), the fuel injectors know when to fire.

When the sensor malfunctions, the computer does not know when to fire the injectors and may not fire them at all. The faulty readouts may also throw off spark timing, which will affect the car’s fuel economy. This sensor is used in conjunction with the crankshaft position sensor to control ignition timing. It is common for heat and oil leaks to cause this sensor to fail, due to where the sensor is located.

Keep in mind:

  • Damage to the camshaft position sensor is often caused by oil leaks; if this is the case, you may need another part of your car replaced or repaired.
  • When the camshaft position sensor is replaced, the alignment of the timing belt should be monitored so that no fluids leak onto the position sensor mounting area.
  • Some camshaft position sensors will need to have their software updated when they are installed.
  • Timing belts, mass air flow sensors, and crankshaft position sensors can all trigger the trouble code for the camshaft position sensor.

How it's done:

  • Scan test computer for trouble codes.
  • Pinpoint tests as per flow charts.
  • Remove and replace Crankshaft Position Sensor.
  • Clear trouble codes.
  • Check for proper operation and test drive car.

Our recommendation:

The camshaft position sensor isn’t checked in most regular services, but your vehicle has warning signs for when the sensor begins to fail. Because it sends information to the camshaft, when the sensor begins to fail your engine will begin to have trouble. Your engine may have a hard time turning on, staying on, idling, or running smoothly. Your Check Engine warning light should illuminate as well.

What common symptoms indicate you may need to replace the Camshaft Position Sensor?

  • Car stalls or does not start.
  • Car struggles to accelerate (does not maintain speed).
  • Check Engine light is on.
  • Car misfires.
  • Car stumbles or sputters on startup.
  • Car runs poorly or runs rough.

How important is this service?

The camshaft position sensor provides valuable information about the camshaft position to the computer management system. The computer system uses the information from the position sensor to determine when to inject more fuel. Without the sensor’s information, the computer won’t inject fuel properly, and your vehicle will stall or sputter.

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Real customer reviews from Mercury owners like you.

Excellent Rating

(156)

Rating Summary
147
7
1
0
1
147
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Jerome

24 years of experience
415 reviews
Jerome
24 years of experience
Mercury Mariner V6-3.0L - Oil Change - Cockeysville, Maryland
He was great thanks again!

Richard

11 years of experience
450 reviews
Richard
11 years of experience
Mercury Mariner L4-2.3L - Noise from engine or exhaust - Lanham, Maryland
He was good with the inspection--however, I was given the impression that Your Mechanic would be able to do the work for my truck. I did get an email to let me know that the company could not do the timing chain replacement. So for $80 I got a roadside inspection but no repair. I'm not sure what a shop would have charged for the same service. Richard is polite and he came early. But I think trying to have consumers do their own car diagnostics is a mistake and certainly not worth $80. I e-mailed your company with my own idea of what is wrong with my truck and I wasn't even close.

Ben

41 years of experience
1362 reviews
Ben
41 years of experience
Mercury Mariner L4-2.5L - Exterior Door Handle Replacement (Driver Side Front) - Humble, Texas
Good job man thanks for the help and how fast you did it

Nathan

29 years of experience
260 reviews
Nathan
29 years of experience
Mercury Mariner V6-3.0L - Brake Rotor/Disc Replacement (Front) - Broken Arrow, Oklahoma
Very pleasant . Nathan was on time, had everything he needed to get the job done in a timely matter. Was very knowledgeable and recommended some maintenance that would be beneficial for my 2007 Mercury Mariner. Will definitely use him again.

Excellent Rating

(156)

Rating Summary
147
7
1
0
1
147
7
1
0
1
Number of Mercury Mariner services completed
1716+
services done by our mechanics
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Recent articles & questions

Symptoms of a Bad or Failing Mass Airflow Sensor
Common signs of problems with a mass airflow sensor include running rich at idle or lean under load, decrease in fuel efficiency, and rough idles.
Symptoms of a Bad or Failing Speed Timing Sensor
Common signs include the transmission having difficulty shifting, Check Engine Light coming on, vehicle not starting, and loss of engine power.
How to Replace a Camshaft Position Sensor
Camshaft position sensors determine the position of the camshaft in relation to the crankshaft to control the fuel injector.

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