Does anybody know if the factory crank angle sensor is a VR or Hall sensor? I dont remember and I'm not around my MS to take a look. Any help would be good, the tell-tale sign its a hall is it's powered and a VR isn't. So a VR sensor is usually a 2 wire and a VR sensor is usually a 3 wire. Any help would be great, ASAP would be better!
BUT!!!!!
Yes, the factory pick up is a VR, BUT, if your asking becuase you are building a megasquirt, you need to build the input for a Hall sensor. the pick up on the car goes to the ICM module. the ICM module decodes the VR sensor and outputs a Hall Effect signal (0-5vdc). So, your MS needs to be built for Hall Input, just like any other HEI-7 or HEI-8.
M90'd Built LGO-15 PSI
http://webstarts.com/quadper4mance
^ True.
If you look at the guide on the MS site the first thing it tells you in the GM DIS section is to build your MS to the configuration for GM HEI.
I'm running my megasquirt to decode the crank signal natively and driving 4 coils internally, so no need for the ICM at all.....woo hoo MS2 Extra....here comes COP!
My 95 ohv had a 3 wire hall sensor.
Joshua Dearman wrote:I'm running my megasquirt to decode the crank signal natively and driving 4 coils internally, so no need for the ICM at all.....woo hoo MS2 Extra....here comes COP!
coolness. so, why are you gonna do it that way? did you not get the expected results using the ICM? what are the benifits of COP. i never really looked into it before. thanks.
M90'd Built LGO-15 PSI
http://webstarts.com/quadper4mance
Yeah, I've never liked using the ICM module mod but it did work just fine....I'm just trying something different. The benefits to COP is a longer coil charge time and hotter spark since the coil will fire half as much as it would with our WastedSpark setup and less current draw...yada...yada...yada.
