dizwiz24

Well it seems so many aftermarket companies re-use possibly defective opti-spark optical sensors when rebuilding an optispark.

id hate to install it, only to have it turn out to be broken.

So is there a way to bench test these?

yes, i already know that you want to be sure you use an opti-spark with the mitsubishi emblem optical sensor.

However, I just recently had an AC Delco reman'd unit (w/ mitsubishi optical sensor) and it was bad.

Tearing it down really sucks.

Is there a way to test out the optispark before install?

C409

............ Plug it in to the harness connector turn the ignition to run and give it a spin with the coil wire 1/2" from ground ...

merlot566jka

^ yup, that will work.

You can also use an o-scope and test the wire that goes back to the ecm, and look for the signal as you spin the wheel.

Not sure of the wavelength on the sender, but you might beable to use a camera in night vision mode or an iphone and point the camera at the sender while its plugged in. if its about 860-910nanometers, you should see it light up through a camera... that will indicate that the sender portion is working.

ScaryFast

You don't even have to unplug the coil wire. You can hear the injectors firing if it's reading properly. I just set it on top of the intake and spin it.