What does VTEC do on a Honda Accord?
The Accord system combines Variable Timing Control (VTC), which continuously adjusts the intake camshaft phase, with Variable Valve Timing and Lift Electronic Control (VTEC), which changes valve lift, timing and duration of the intake valves. At low rpm, the VTEC intake valve timing and lift are optimized for rapid swirl-pattern cylinder filling.
What happens when the solenoid of the EVAP fails?
When the solenoid is opened, air is allowed into the EVAP system to relieve any pressure that may be present as a result of purging the EVAP system. When the EVAP vent solenoid fails, it can prevent fresh air from entering the EVAP system, which can negatively affect the system operation.
What is the error code for a VTEC oil pressure switch?
The PCM will oversee the system and should there be any disparity between the oil pressure condition in the hydraulic circuit determined by the PCM command, and the oil pressure determined by the status of the VTEC oil pressure switch, then this system will be read as a fault, setting the code P1259.
What is the trouble code for Honda VTEC?
P1259 – VTEC system malfunction (Honda) Trouble Code Fault Location Probable Cause P1259 VTEC system malfunction Wiring, VTEC solenoid/pressure switch, E
Why is the solenoid on my Honda Accord leaking oil?
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.”. It is largely dependent on the engine’s oil pressure and engine temperature.
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.
How to stop a gasket leak on a Honda Accord?
After a lot of reading over this forum and watching videos on Youtube I decided to replace my VTEC solenoid gasket to see if I could stop a leak on my Honda Accord 2.4 L with 130k miles. 1) Bought the part from Amazon from “AutopartsUSA” that sent me a pack that includes de solenoid gasket, the front gasket and the o-ring.
The PCM will oversee the system and should there be any disparity between the oil pressure condition in the hydraulic circuit determined by the PCM command, and the oil pressure determined by the status of the VTEC oil pressure switch, then this system will be read as a fault, setting the code P1259.