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So - I managed to do more testing and figured some more things out. Turns out, the noise isn't coming across the sensor ground wire for the ECU. It actually has nothing to do with the hall sensor or shielding afterall. I figured this out by realizing that my ECU has a test mode where you can...

Yes sorry - this is just the grounding diagram. The coils have 3 terminals. +12v switched by key, output from ECU to coil (sinking output, pulls to ground) and the ground wire pictured above. The only thing I can think of is that its just to move the ground up. Not sure what it's trying to...

My NGK AFX reads 9-16:1 AFR (gasoline). Honestly, if its leaner than 16:1 or richer than 9:1 I don't care, because its way too rich. The more you need to read, the less resolution you will have. Remember, you have a 5 volt scale with probably an 8 bit or 10 bit ADC to work with. If you...

Trying to figure out the purpose of this. My 1992 BMW does not have this resistor on the car or in the schematic. My 1995 engine does. I am hunting down ignition coil noise and I want to figure out whether this is a good thing to implement or not. The resistor is 240 ohm, 2-watts. I doubt...

Pat - new plugs, so everything should be good there. I can't really tell if its engine speed per say. I am simply cranking over with the scope and I have the trigger set for anything over like 1v on the "noise wire". When I crank the car I have it set to run the coils in wasted spark so I see...

Thanks all! Pat that is a good idea, only problem is the coils sit on the spark plugs directly (coil on plug setup). I am using a resistor spark plug and I measured the coil output tubes for resistance and they are in spec (1.7 - 1.8 k-ohm). It almost seems like its radiated noise. These...

Ground straps are all hooked up - car has run for 1.5 years with this motor. Just recently started having issues.

Hi all, Recently my car developed an issue. Recent as in a couple or few months but I finally have the time to sit down and look at it. I had issues with my hall effect crank position sensor sync'ing up according to the DTA ECU I run. It would take longer than normal to crank over. I hooked...

Thanks all - I am using Deutsch DTM connectors with strain relief boots as well as tyco/ampeal Super Seal II connectors on the ECU. I really don't try to shortcut anything. Also, to strip the PTFE you just need the right stripper :) I wish I could a retailer for the wire. I have some old...

Pat - I am not sure why the sarcasm or abrasiveness? Unless I am picking that up incorrectly. The vehicle is a 700 rwhp turbo BMW and I have one lengths to use adel wiggins tubing assemblies and milspec connectors where possible. However, I am considering re-wiring the car to clean it up and...

Many times the wiring in older passenger cars is aging. I'd much prefer a new resource as this car is a brand new re-wire/build and has milspec/racing connectors.

Hi all - Considering re-wiring much of my custom wiring loom on my BMW. I can't find a good resource that sells many colors of wire. McMaster Carr has like 8 or 9 colors and that's nice but I was hoping for like basic colors + stripes and such so I can pin out an 80 pin connector with...

Well a hall sensor operates close to zero movement, whereas a VR sensor requires velocity to generate a signal. The motor I have was never sequential fuel/spark controlled at idle, it was only switched over at higher RPM once the cam tooth made a good clean sweep. Because Hall uses a 0/5v...

Mike, I am switching the engine from a batch fire fuel/wasted spark setup to a fully sequential setup due to fuel injector size increase. I am running another engine management which will permit the use of hall sensors. I've determined the original VR sensors in the camshaft position are...

Hello all greetings I am converting an engine from using VR sensors to Hall sensors. I have the proper sensor which is a fully threaded aluminum housing that will go into where the former VR bosch sensor mounted (with a tab to hold the old sensor down). The part I machined is like the old...