What happens when the VTEC is not working?
Without VTEC working, the engine goes into the “fail safe” mode, AKA limp mode where it is stuck in 12 valve operation. This is not your B-series VTEC, this is the K-series iVTEC, which is very different from the original VTEC that activated at 5000 RPM.
How to check the 5000 rpm rev limit in neutral?
Go to Auto Zone and read the code. It may say that it is the VTEC solenoid. If you are unsure what weight of oil speedy lube put it, change it your self with 5W-20 and see if the 5000 RPM limit goes away. By the way, are you checking the 5000 RPM rev limit in Neutral?
What’s the RPM limit on a VTEC solenoid?
It may say that it is the VTEC solenoid. If you are unsure what weight of oil speedy lube put it, change it your self with 5W-20 and see if the 5000 RPM limit goes away. By the way, are you checking the 5000 RPM rev limit in Neutral? There is program in the computer not to let the engine rev past 5000 RPM when in neutral or at stand still.
What does low oil do to your VTEC?
Low oil sends the engine into the “limp mode” no VTEC actuation at all. Your check engine light should have come on as well as the low oil light. Infrequent oil changes, improper oil weight, or improper filter will affect the VTEC solenoid operation as well. VTEC is actuated by oil, if the viscosity is not right, it will not live long. Good luck.
Why does the VTEC work at lower RPMs?
The gist is that at lower RPMs smaller cam lobes open and close the valves at shorter intervals for normal operation and at a specified RPM a hydraulic pin engages a larger cam lobe to leave the valves open longer to allow more are to enter the cylinders, allowing for increased performance and better fuel efficiency at higher RPMs.
What’s the difference between VTEC and i-VTEC?
This system is called i-VTEC, as opposed to VTEC in most Honda V6s (think J-series) with the xception of the Odyssey’s V6. In these cars, VTEC only engages higher up in the rev range, and you can feel a “kick” in those cars.
What does VTEC stand for in Honda engine?
The VTEC system is a simple method of endowing the engine with multiple camshaft profiles optimized for low and high RPM operations. Instead of one cam lobe actuating each valve, there are two: one optimized for low-RPM stability & fuel efficiency; the other designed to maximize high-RPM power output.
How does VTEC switch from low lift to high lift?
Switching between the two cam lobes is controlled by the ECU which takes account of engine oil pressure, engine temperature, vehicle speed, engine speed and throttle position. Using these inputs, the ECU is programmed to switch from the low lift to the high lift cam lobes when the conditions mean that engine output will be improved.