Quote:
Originally Posted by dhutton
I think it is likely an issue with what is connected to the sensor. It is loading it or not pulling it up properly.
This is all a bit of navel gazing without putting a scope on the crank signal. It really is the best way to troubleshoot it.
One question. You said the tach signal in the title and then talked about the crank signal. The tach signal is generally an output from the ECU. So which signal is the problem?
Don
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Thank you, Don. I changed the title of the post from Tach to Crank, thanks for catching that mistake. I changed all the text verbiage from tach to crank and forgot to change the title.
I don't have access to a scope, unfortunately. But, logically speaking, if we have changed ECU's, we've changed the harness wiring, and reverified the harness wiring is OK, then the next step is to change the crank sensor itself (the last piece of the puzzle). I think you meant to use the scope to test the crank sensor, and in my mind it's much easier to just swap in a new crank sensor than to try and test the old one. If I'm missing something here, please let me know.
I appreciate your input and in no way am attempting to shut you down. This is a dialog, and I hope you receive my reply in a positive manner. Thank you.