What is Camshaft Adjustment Valve?
A camshaft adjustment valve (often the N205 valve) is an electronically controlled solenoid that directs oil pressure to the Variable Valve Timing (VVT) phaser, adjusting camshaft timing for optimal engine performance, reduced emissions, and better efficiency. Failure leads to poor idle, reduced power, and P0011 or P0340 codes.
Key Aspects of the Camshaft Adjustment Valve
Purpose
It adjusts the timing of intake and exhaust valves based on RPM, enhancing torque and smoothing acceleration.
Location
Typically mounted on the cylinder head, often accessible at the front or top of the engine.
Operation
The Engine Control Unit (ECU) regulates the valve to allow oil flow to activate the timing phasers.
Common Failure Causes
Contaminated engine oil, poor maintenance, or electrical malfunctions within the solenoid.
Symptoms of Failure
Check engine light, rough idle, engine stalling, poor acceleration, and increased fuel consumption.
Troubleshooting
Check for oil sludge or improper oil level; faulty valves usually require replacement.
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![Autotecnica AT4Z6M280A Variable Valve Timing (VVT) Solenoid, Black FORD 3.5L/3.7L Control Solenoid]()
Autotecnica AT4Z6M280A Variable Valve Timing (VVT) Solenoid, Black FORD 3.5L/3.7L Contr...Product Name: Camshaft adjustment valveOE NO:AT4Z6M280AApplication: FORD 3.5L/3.7LMOQ: 10 PCSManufacturer Warranty:1 Years/20,000 kmINCLUDING:4 SOLENOID -
![Variable Valve Timing Solenoid For Buick Cadillac GMC Pontiac Allure ATS Acadia SK917219 Control Solenoid]()
Variable Valve Timing Solenoid For Buick Cadillac GMC Pontiac Allure ATS Acadia SK91721...Product Name: Camshaft adjustment valveOE NO:SK917219Application:Buick Chevrolet GMC V6 3.6 MOQ: 10 PCSManufacturer Warranty: 1 Years/20,000 kmINCLUDING:4 SOLENOID
Replacing the valve
Replacement usually involves removing the bonnet, disconnecting the wiring harness and unscrewing the fixing screws (typically T20 or similar), before replacing the part. It is recommended that you seek the assistance of a professional mechanic.
Variable Valve Timing (VVT) Solenoid Valves
As part of Hongli’s latest product range, the Variable Valve Timing (VVT) solenoid valves provide mechanics with a repair solution for high-mileage vehicles
Designed specifically to replace faulty VVT solenoids
Hongli components are CAD-designed and manufactured using high-quality materials. Each product undergoes rigorous testing and measurement for functionality, fit, coil/insulation resistance and durability to ensure optimal performance;
All VVT solenoids undergo 100% inspection during production. Test parameters include assembly fit, leakage, maximum oil flow and holding duty cycle;
Hongli VVT solenoid valves are supplied with brand-new mounting bolts to ensure correct installation and proper valve function, and feature OEM-specification wiring harness connectors;
Please consult our online product catalogue for detailed vehicle compatibility information;
Choose Hongli – the global leader in timing drive systems – to ensure your engine’s valve train always maintains precise timing.
With abundant experience, we are one of the most professional camshaft adjustment valve manufacturers in China. Please rest assured to buy customized camshaft adjustment valve at competitive price from our factory. If you have any enquiry about cooperation, please feel free to email us.
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