[takid455]

Interesting. Is the sensor a 3 wire Hall effect ? Like that of which Ford used in Explorers & the like? Per the response, I am assuming the AFR & MAP readings were good?

[ErikW]

Originally Posted by takid455

Interesting. Is the sensor a 3 wire Hall effect ? Like that of which Ford used in Explorers & the like? Per the response, I am assuming the AFR & MAP readings were good?

Yes, the good old 3 wire Taurus/Explorer sensor. AFR would show lean but as a result of the misfires.

[HWYSTR455]

So curious, how was it determined the cam sensor was occurring at the wrong point?


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[ErikW]

Originally Posted by HWYSTR455

So curious, how was it determined the cam sensor was occurring at the wrong point?


.

It involved running a system log (not a data log) and seeing where, in the rotation of the crank, the cam signal was occurring. Although it was within Holley's window of operation it was not in the optimal location of 195deg +/- 15deg before TDC of the compression stroke as instructed by Luhn, the manufacturer of the cam sync assy. Totally my fault for setting it up wrong to begin with. Or at least not fully understanding their instructions. Lessons learned for sure. Initially we were able to get it running by switching the "digital falling" setting to "digital rising" which apparently made the Holley computer happy enough to fire it up and all seemed fine until we took it to the track. However, after much research and circuit testing we realized that the sensor was actually working opposite of what we thought was correct. So, when the sensor is uncovered it signals 12v to the ecu. When the shutter is closed it goes to zero volts. We were told the opposite. Anyway, it's fixed and we will move on!