How do you know if your vtec is working?

The meter should read very very low voltage until vtec hits. If vtec activates then the voltage should read around 12. if not then your ecu may not be functioning properly.

1. At what RPM does VTEC engage?
2. What are the symptoms of a bad VTEC solenoid?
3. What causes VTEC not to engage?
4. How do I fix my VTEC system malfunction?
5. Can you adjust when VTEC kicks in?
6. Does VTEC make a car faster?
7. Is a VTEC engine faster?
8. What happens if you drive with a bad VTEC solenoid?
9. Can you drive with a bad VTEC solenoid?
10. How do you test a VTEC pressure switch?
11. How does a VTEC oil pressure switch work?
12. Can you bypass a VTEC solenoid?

At what RPM does VTEC engage?

At 3000-5400 RPM, depending on load, one of the VTEC solenoids engages, which causes the second valve to lock onto the first valve's camshaft lobe. Also called 16-valve mode, this method resembles a normal engine operating mode and improves the mid-range power curve.

What are the symptoms of a bad VTEC solenoid?

What are the symptoms of a bad VTEC solenoid? The most likely scenario with a VTEC solenoid failure is when you get a check engine light, and the car will likely go into limp mode, often leaving you fearing the worst.

What causes VTEC not to engage?

The ECU won't let VTEC happen if the engine is not warm or the oil pressure is not high enough. You might want to check the wiring to the related sensors. Else, perhaps the VTEC solenoid.

How do I fix my VTEC system malfunction?

The most common cause for Error Code P1259 or VTEC system malfunction is low oil pressure. Thus, make sure you check your oil if it's due for service. Change oil and filter if necessary. Clear the codes and then give it a try.

Can you adjust when VTEC kicks in?

Ensure your Honda is capable of being "tuned" properly and can benefit from a VTEC engagement-point adjustment. This may necessitate the addition of aftermarket parts or other upgrades from the manufacturers' "stock" engine.

Does VTEC make a car faster?

Honda developed its Variable Valve Timing & Lift Electronic Control (VTEC) technology to make its cars quicker, more efficient, and more enjoyable to drive overall.

Is a VTEC engine faster?

So, to conclude, yes VTEC does make the car faster, by giving a more aggressive cam profile in the top end. However, similar results can be achieved by fitting more aggressive cams to a non-vtec engine, though low end drivability will be lost.

What happens if you drive with a bad VTEC solenoid?

A malfunctioning VVT solenoid can prevent the valve timing from advancing or retarding as needed. As a result, the engine may exhibit performance problems, such as rough running and poor acceleration.

Can you drive with a bad VTEC solenoid?

In some cases, the motor may run (not very well) with a broken or damaged variable valve timing solenoid, however it will likely not run for long due to the critical role the VVT solenoid plays in the timing of the motor.

How do you test a VTEC pressure switch?

To test for continuity on the vtec switch, set the meter appropriately (like picture) and touch one lead to each of the two pins on the vtec switch itself. To test for continuity of the vtec circuit in the ECU, you woud touch one lead to each of the pins in the unplugged wiring harness.

How does a VTEC oil pressure switch work?

The variable valve timing oil pressure switch is a normally open switch located at the VVT solenoid. When the VTEC oil pressure switch closes, the voltage should drop to zero. This is how the PCM knows if oil pressure was applied to the VTEC system. When this system fails to operate properly the ECM may set a code.

Can you bypass a VTEC solenoid?

This can be easily bypassed with a simple wiring trick: On your engine harness, locate the VTEC oil pressure switch plug/wire (this wire comes from OBD1 ECU pin D6). Use a common T-tap or other method and simply tap this into the VTEC solenoid valve wire (the VTEC solenoid wire comes from OBD1 ECU pin A4).