[QUOTE=

Have you looked at the inside of your ECU yet? I am just wondering if there is aproblem internal to the ECU.[/QUOTE]

2x on that ( that was my issue 2 weeks ago )

 

Yeah, the inside of the ECU may be all corroded up giving you erratic behavior as well. Since you didn't get much driving time when you first bought it, you may be dealing with a pre-existing condition instead of something you did wrong. i would look at that prior to tearing down the newly assembled motor.

Rule out any simple possible causes first.

 

My ECU looks brand new inside and out. It's really spotless and sealed too.

I'm guessing CKP will be here tomorrow to test.

I'll check knock sensors just in case too.

 

thats unusual, all other VR sensor circuits im familiar with use 0 crossing as the trigger point. the peaks of the waves are not always uniform

 

Attached data sheet on CKP from Bosch manual for a D2, should be similar (sensor, plate, different ECU). Uses term "falling edge".

 

So it is a Square Wave Form, It has been many years since I have even seen a scope, much less had to set one up and use it.

 

no, its not, its just showing you the shape of the trigger wheel teeth. the trace will look like the one on the right side of the picture i posted earlier.

it sounds like it uses the zero crossing on the vertical part of the "backside" of the wave, rather than the "flat" spots. in any case, it doesnt use the peaks - ive never heard of a VR circuit that does

 

falling edge, as compared to "center of wave". Because of that, reversed polarity will put you on the opposite edge, 3 degrees off.

 

If I may ask, is P1316 related? I popped that twice here lately.

 

Time for Seafoam or witch's brew of choice and new plugs - does not relate to just cylinder #6