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SN95 Cobras
96' Procharged Cobra "Casper" Build
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<blockquote data-quote="01silverstang" data-source="post: 16649816" data-attributes="member: 21743"><p>Well it's been a little while... finally got the SCT X4 and did a couple idle data logs and sent a screen shot to Mike at DynotuneMP. He advised the log looked fine, with the exception of battery voltage (which is measured at the PCM) which was only 7.94v. I measured at the battery during this time and the multimeter was reporting 14.2-14.4v at idle. Soooooo... I need to figure out why the voltage is dropping so badly, a friend suggested before checking the "VPWR" pins on the PCM, to check the PCM power relay output from the CCRM. </p><p></p><p>I have checked the grounds on each side of the radiator support and they are good. The negative terminal is tight, and all fuses are showing 12.5v... the ground directly by the PCM appears to have never been touched. </p><p></p><p>The only two similar situations I can think of, are when I had a loose negative terminal the engine bay fuse box showed 7'ish volts. My friend who suggested the PCM power relay, advised he had the internal fuel pump relay fail in his 96' Cobra which led to 7'ish volts to his fuel pump. Can't find any other similar situations via search/google.</p></blockquote><p></p>
[QUOTE="01silverstang, post: 16649816, member: 21743"] Well it's been a little while... finally got the SCT X4 and did a couple idle data logs and sent a screen shot to Mike at DynotuneMP. He advised the log looked fine, with the exception of battery voltage (which is measured at the PCM) which was only 7.94v. I measured at the battery during this time and the multimeter was reporting 14.2-14.4v at idle. Soooooo... I need to figure out why the voltage is dropping so badly, a friend suggested before checking the "VPWR" pins on the PCM, to check the PCM power relay output from the CCRM. I have checked the grounds on each side of the radiator support and they are good. The negative terminal is tight, and all fuses are showing 12.5v... the ground directly by the PCM appears to have never been touched. The only two similar situations I can think of, are when I had a loose negative terminal the engine bay fuse box showed 7'ish volts. My friend who suggested the PCM power relay, advised he had the internal fuel pump relay fail in his 96' Cobra which led to 7'ish volts to his fuel pump. Can't find any other similar situations via search/google. [/QUOTE]
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96' Procharged Cobra "Casper" Build
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