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The camshaft position sensor (CMP sensor)&nbsp;plays a key role&nbsp;in a modern internal combustion engine. It monitors the position and speed of the camshaft, which controls the opening and closing of the engine's intake and exhaust valves.
Location:&nbsp;The camshaft position sensor is typically located near the camshaft in the engine's cylinder head or valve cover. Its exact location may vary depending on the vehicle's make and model.
Function:&nbsp;The CMP sensor's primary function is to monitor the position and speed of the camshaft. It sends this information to the engine control unit (ECU) or engine control module (ECM). The ECU uses this data to determine the optimal timing for fuel injection and ignition, ensuring efficient engine operation.
<h2>Types of CMP Sensors</h2>
Hall Effect Sensor: Many CMP sensors use the Hall effect principle, which generates a voltage signal based on the camshaft's position.
Magnetic Pickup Sensor:&nbsp;Some vehicles use a magnetic pickup sensor that generates a voltage signal as the camshaft's lobes pass by it.
<h2>Symptoms of a bad camshaft position sensor </h2>
A failing or faulty camshaft position sensor (CMP sensor) can lead to various symptoms and issues in your vehicle's engine performance. Recognizing these symptoms can help diagnose and address the problem in a timely manner.&nbsp;Check the following:
<ul>
<li>Check engine light: Illuminates on the dashboard due to sensor malfunction.</li>
<li>Poor engine performance: Results in rough idling, stalling, and power loss.</li>
<li>Misfires: Causes engine misfires, vibrations, and reduced power.</li>
<li>Starting issues: Leads to hard starting or no start conditions.</li>
<li>Fuel efficiency: Decreases fuel efficiency and increased consumption.</li>
<li>Timing problems: Disrupts engine timing, causing erratic operation.</li>
<li>Loss of OBD-II data: Affects diagnostic data and troubleshooting.</li>
<li>Emissions increase: Raises emissions levels and compliance concerns.</li>
<li>Transmission impact: This may affect automatic transmission shifting.</li>
</ul>

Camshaft Position Sensor

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Air Filter Box

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Air Flow Sensor

Air Intake Duct

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Air Intake Hose

Air Intake Manifold Actuator Control Solenoid

Air Intake Manifold Flap Adjuster

Air Intake Manifold Runner Control Sensor

Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

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Intercooler

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Oxygen Sensor

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Pressure Sensor

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Throttle Body

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Throttle Position Sensor

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Turbocharger

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Turbocharger Oil Line

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Vacuum Pump

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Air Filters & Intake Systems

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Camshaft Adjuster

Camshaft Adjuster Cover

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Camshaft Timing Gear

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Camshafts

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Engine Valve Cover

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Harmonic Balancer

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Timing Belt Kit

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

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Valve Lifters Tappet

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Cams, Timing & Valvetrain

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Belt Tensioner

Coolant Level Sensor

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Crankcase Breather Hose

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Crankcase Breather Valve

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Crankshaft Position Sensor

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Engine Oil Dipstick Tube

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Oil Cooler Line

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Oil Filter

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Oil Filter Housing

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Oil Level Sensor

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Oil Pan

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Oil Pump

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Oil Pump Pickup Tube

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Cranks, Pistons, Oil & Components

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

Engine Valve Covers & Ignition Coils Kits

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Ignition Coil

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Spark Plug

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Spark Plug Wire

Electronic Control Modules, Ignition & Distributors

Engine Wiring Harness

Intake Manifold Repair Kit

Engine Components & Accessories

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Auxiliary Water Pump

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Expansion Tank

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Expansion Tank Mounting Plate

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Fuel Cooler

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Radiator

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Radiator Support Assembly

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Temperature Sensor

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Turbo Hose

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Water Coolant Pipe

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Water Outlet

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Engine Cooling

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Engine Mount

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Catalytic Converter

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EGR Valve

Emissions Fluid Pump

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Exhaust Fluid Heater

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Exhaust Gas Temperature Sensor

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Exhaust Manifold

Fuel Tank Breather Valve

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Fuel Vapor Leak Detection Pump

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Nitrogen Oxide Sensor

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Secondary Air Injection Check Valve

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Vapor Canister Vent Solenoid

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Exhaust & Emission Systems

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Fuel Filter

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Fuel Injection Control Module

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Fuel Injection Pressure Regulator

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Fuel Injector

Fuel Injector Kit

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Fuel Injector Module Wiring Harness

Fuel Line Kit

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Fuel Sending Unit

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Fuel Tank Filler Neck Pipe

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Fuel Tank Strap

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High Pressure Fuel Pump

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Idle Air Control Valve

Mechanical Fuel Pump

Oil Pressure Relief Valve

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Fuel Systems & Components

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The engine comprises many essential elements such as the lower cylinder block, upper cylinder head(s), and the cooling & lubricating systems. With A-Premium aftermarket engine components, you can expect that your engine deliver years of reliable performance. We offer a diverse selection of engine components from air filters and ignition coils (kits) to fuel pumps to cater to your needs.

1990 Oldsmobile 98 Camshaft Position Sensor

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