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

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(157)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(157)

Camshaft Position Sensor Replacement Service

How much does a Camshaft Position Sensor Replacement cost?

On average, the cost for a Mercury Mariner Camshaft Position Sensor Replacement is $126 with $32 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2005 Mercury MarinerV6-3.0LService typeCamshaft Position Sensor ReplacementEstimate$177.99Shop/Dealer Price$203.74 - $258.49
2008 Mercury MarinerL4-2.3L HybridService typeCamshaft Position Sensor ReplacementEstimate$169.29Shop/Dealer Price$197.88 - $261.12
2005 Mercury MarinerL4-2.3LService typeCamshaft Position Sensor ReplacementEstimate$169.29Shop/Dealer Price$197.88 - $261.12
2009 Mercury MarinerV6-3.0LService typeCamshaft Position Sensor ReplacementEstimate$233.09Shop/Dealer Price$277.61 - $388.68
2008 Mercury MarinerV6-3.0LService typeCamshaft Position Sensor ReplacementEstimate$218.81Shop/Dealer Price$259.80 - $360.19
2007 Mercury MarinerL4-2.3LService typeCamshaft Position Sensor ReplacementEstimate$169.29Shop/Dealer Price$197.88 - $261.12
2007 Mercury MarinerV6-3.0LService typeCamshaft Position Sensor ReplacementEstimate$223.81Shop/Dealer Price$264.65 - $364.92
2011 Mercury MarinerL4-2.5LService typeCamshaft Position Sensor ReplacementEstimate$285.55Shop/Dealer Price$342.19 - $489.06
Show example Mercury Mariner Camshaft Position Sensor Replacement prices

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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercury mechanics

Real customer reviews from Mercury owners like you.

Excellent Rating

(157)

Rating Summary
148
7
1
0
1
148
7
1
0
1

Chris

22 years of experience
2229 reviews
Chris
22 years of experience
Mercury Mariner L4-2.5L - Check Engine Light is on Inspection - Irvine, California
Very thorough and good at explaining what you can do to yourself to make minor improvements.

Charles

34 years of experience
342 reviews
Charles
34 years of experience
Mercury Mariner V6-3.0L - Window Motor / Regulator Assembly Replacement (Driver Side Front) - Austin, Texas
Very nice and came as scheduled! Would recommend

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.

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!

Excellent Rating

(157)

Rating Summary
148
7
1
0
1
148
7
1
0
1
Number of Mercury Mariner services completed
1727+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercury MECHANICS
600+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing Ambient Temperature Sensor (Switch)
Common signs include a faulty AC auto mode, inconsistent cooling, and incorrect outdoor temperature readings.
Symptoms of a Bad or Failing Low Water Sensor
If your car has low coolant without a warning, the Coolant Light comes on for no reason, or the car is overheating, replace the low water sensor.
How to Replace a Refrigerant Pressure Sensor
The air conditioning system has a refrigerant pressure sensor that goes bad when the air conditioning does not work or only works intermittently.

Do you have to do a factory reset on my car ?

Hello. If everything was done correctly then it should start right up. If it is not getting spark or fuel then I would check the crank signal. If the crank sensor (https://www.yourmechanic.com/services/crankshaft-position-sensor-replacement) is not sending a good signal then the...

Cant get my car out of limp mode or "fail safe mode"

The reason "limp mode" has become "unbypassable" is due to the existing codes. The ECT failure (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement), if it exists, may alone account for that because an engine coolant temperature sensor is essentially a master sensor - the value of...

The car wont go over 4000 rpms

Hi there. This sounds like the engine timing is off. Check the camshaft sensor (https://www.yourmechanic.com/services/camshaft-position-sensor-replacement) and crankshaft sensor (https://www.yourmechanic.com/services/crankshaft-position-sensor-replacement) to see they are working. The computer has the engine in limp mode to keep the rpm's from going up. If...

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