When a camshaft sensor fails, it sends incorrect data to the car's computer (ECU/PCM), disrupting fuel injection and ignition timing, leading to rough idling, misfires, poor acceleration, stalling, difficulty starting, and the Check Engine Light coming on, with severe failures potentially causing the engine to not start at all. Ignoring these symptoms can lead to more serious engine damage over time, as the computer can't synchronize essential engine functions.
While you can drive with a bad camshaft position sensor, it's not recommended. Continuing to drive with a faulty sensor can lead to other more costly problems, and it could potentially cause your engine to stall while you're on the road, causing danger to yourself and others.
The average cost for a Camshaft Position Sensor Replacement is between $213 and $322. Labor costs are estimated between $105 and $154 while parts are priced between $108 and $168. This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed.
Early Symptoms of a Crankshaft Sensor Going Out
In any scenario, you'll want to replace the CMP sensor right away. Failing to do so can eventually damage other parts of the vehicle, such as the catalytic converter.
Changing a cam sensor isn't an overly complicated job, but it requires some basic tools and a code reader to get the job done right.
Transmission Shifting Problems
Data received by the ECM from a failing camshaft position sensor can keep transmission shift solenoids from operating and gears from shifting. Called “limp-home-mode” on some models, it helps protect the engine from damage by restricting engine speed.
However, when a sensor fails or sends incorrect data, you may experience poor acceleration, increased fuel consumption, rough idling, or even a no-start condition. Diagnosing the problem early can save you thousands in repairs and prevent breakdowns.
The camshaft is essential in managing the timing of your engine's intake and exhaust valves. If the camshaft is failing, your car's performance will suffer, and left unchecked, it can lead to significant engine damage.
How long can you drive with a bad camshaft? Driving with a bad camshaft is risky and should be avoided. Even if the vehicle runs, continued use can cause severe engine damage within days or weeks.
Loud Ticking or Tapping Sounds
If you're wondering what a bad camshaft sounds like, it usually makes loud ticking or tapping noises.
Risks to Engine Health
Neglecting symptoms of a faulty oxygen sensor can severely compromise your engine's health and performance. If you're not attentive, you could face: Decreased fuel efficiency: A bad oxygen sensor sends incorrect data on the air-fuel mixture, causing the engine to consume more fuel.
While experienced DIYers may tackle minor car repairs, camshaft replacement is complex and typically requires removing or dismantling the upper portion of the engine. This usually involves specialized tools, precise timing adjustments, and extensive mechanical knowledge.
You should expect to spend between $185 and $320 for parts and labor to install a new camshaft sensor. Here's a breakdown of the cost: New sensor: $110 to $150 (per sensor) Labor costs: $75 to $170.
It's only necessary when installing an all-new camshaft position sensor, not when you do a simple code-reader reset.
Sensor Connection Issues: Faulty wiring, loose connections, or improper installation can cause intermittent or complete loss of signal from a sensor, resulting in unreliable measurements or complete sensor failure.
In conjunction with the Summit Racing tech department, we've assembled the eight most common causes of camshaft failure:
Contamination. The working environment of heavy-duty engines can expose the crankshaft sensor to various contaminants such as dirt, oil, and debris. These contaminants can find their way into the sensor housing, affecting its internal components.
Knocking or Clunking Noises from the Engine
One of the first signs of a bad crankshaft is unusual knocking or clunking noises. This happens when crankshaft journals become worn or bearings begin to fail. These noises are typically deeper and more metallic than valve tapping or injector ticks.
A diagnostic scan may reveal specific fault codes pointing to a failing crankshaft or camshaft position sensor. Poor Acceleration and Performance: With incorrect data feeding into the engine system, you might notice sluggish acceleration or reduced power during drives.