01-25-2023, 01:18 PM | #1 |
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Crank but no start/ Battery discharging / Multiple B+ shorts
I could use some insight from anyone who can help me pinpoint the root cause of all these short circuits. Checked dme connections, Replaced and registered battery, and checked all fuses. Is this due to a faulty IBS sensor? Battery Distribution box? Or is my FEM or DMe faulty? Recently replaced the fuel control module because it was fried.
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01-25-2023, 02:16 PM | #2 |
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Are you sure you are not missing a ground cable, or having a lose cable? Or created a short to ground? The throttle valve potentiometer seems to pop up in the errors. What amperage is the battery pulling when the car is not running but ignition on? When idle?
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01-25-2023, 03:05 PM | #3 |
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Checked all power and ground cables in the engine bay and didn't see any corrosion or loose connections. The battery will initially read full charge after a charge (obviously), but will completely die with having just accessories on after 15 Mins. I'm not sure what could possibly be causing a short to ground. Didn't see any torn/chaffed wiring harness or torn wires that could be possibly grounding out to any metal and I've checked every wire and connector in the engine bay countless times. Every sensor and dme connections is firmy connected and dint see any fluid seeping into any of them either. I'm really stuck with trying to figure this out
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01-29-2023, 11:00 AM | #5 | |
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Quote:
Any way you can try to read the amps that the battery is pulling? Going from fully charged to depleted in 15 mins for a good battery seems impossible unless there is a short. Just a long shot: there iis a master ground cable below the engine near the transmission. I saw a video on YouTube (will see if I can find it) where that cable was worn and frayed and caused similar issues.
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