What does the VTEC solenoid do?
The VTEC system provides the engine with valve timing optimized for both low and high RPM operations. At the switch point a solenoid is actuated that allows oil pressure from a spool valve to operate a locking pin which binds the high RPM rocker arm to the low RPM ones.
How does the Honda Accord VTC system work?
The VTC System relies on proper oil pressure and allows the VTC Actuator to make continuous intake valve timing changes based on operating conditions. Intake valve timing is optimized to allow the engine to produce maximum power. If an error occurs, the VTC system control is disabled and the valve timing is no longer variable.
What do you need to know about VCT solenoids?
Before we get too far into discussing VCT solenoids and what they do, it’s essential for you to have a solid understanding of Ford’s game-changing Variable Camshaft Timing (VCT) technology. It’s a variable valve timing technology that was developed specifically for Ford vehicles at around the turn of the century.
What causes the solenoid not to activate VTEC?
If the motor is not maintaining oil pressure or reaching engine temperatures, it can cause the solenoid to fail and not activate VTEC. With the engine cool, pull the dipstick and make sure the oil level is not low. By reading the temperature gauge, when the car is running, we want to make sure it reaches 178 degrees.
Why is the solenoid on my Honda Accord not working?
On many Honda vehicles, the VTEC solenoid has been found to be the culprit. More commonly, the gasket could be faulty and all that needs replacing. When this solenoid is bad, the motor’s VTEC will not “activate.”
How does the VTEC work on a Honda Accord?
It accomplishes this by turning a control solenoid ‘ON’ to allow oil pressure into the VTEC control passages to apply pins that will lock the intake rockers. When the oil pressure is present, the pressure switch signal will go high. When the control solenoid is turned ‘OFF’, the oil pressure is dumped and the oil pressure switch signal will go low.
Why did I pull off the VTEC solenoid assembly?
Everything pointed to an electrical problem taking into account the numerous system malfunctions and piss poor idle. However, I decided to pull off the VTEC solenoid assembly to check mechanical malfunctions before diving into the dreaded electrical malfunctions.
When does the VVT solenoid work best?
The VVT solenoid works best when the engine oil is clean, free of debris, or has lost some of its lubricity or viscosity. When the engine oil becomes clogged with debris, dirt or other foreign particles, it tends to clog up the passageway from the solenoid to the VVT chain and gear.
Is there a problem with the VTC oil control?
The VTC Oil Control Solenoid Valve also appears to have screens that could clog. Click to expand… what do you know, i changed the oil and filter last night and it’s fine. took it on the highway to try and recreate the problem and nothing. took my son to school this morning and the engine light was off. thanks!