Does anyone know what the Manufacturers date code is on this VVT solenoid?

 

We ... or at least I am curious why the interest in manufactured date? Is there a range of bad dates.

The device itself is an electromechanical item with a plunger inside, which opens the oil passage based on voltage. It has a tendency to stick based on quality of oil [and frequency of change of oil] and my limited observation is that its life is more than 120K miles. The screen usually needs servicing and the Orings must be replaced at each service [they tend to harden and give a pretty good fight before allowing the valve to come out. They come as a pair and due to bolt down skirt position are not interchangeable.

I have shared all I know and now its your turn if you choose.

Salim

 

I recently replaced both VVT solenoids. One had markings and the other did not. The vehicle is a 2000 rx300 with 161k.. Definitely an improvement after replacing the solenoids. I'm thinking the old ones were probably the OEM.

 

By looking at the condition of the Oring, it has had plenty of time in hot environment.

You can bench test it with 12v battery [full on/ full off]

Salim