Voltage is crazy

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Nov 8, 2006 | 06:45 PM

navymitch12

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From: Texas

Voltage is crazy

What could cause my gauges to not be reading the correct to the point where my car/ecu seems to "reboot" while i am driving. The voltage that i am reading off the battery posts, the + pos over by the fuses, and the cig lighter are all 14.7......so i am thinking that the ECU is not getting the correct amount of power. Is the only source for ecu power the Generator L-Circut? I am not throwing any codes at all. Any thoughts?

Nov 9, 2006 | 04:50 AM

navymitch12

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ttt

anyone?

Nov 9, 2006 | 09:33 AM

jimmyblue

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Sounds like a loose connection, intermittent, in
either IGN or the ground strapping. Some GND
braids from block to sheet metal that can be
worked loose, crust up etc. Back of driver's
head is one that's hard to see. Might be simplest
to just unhook the battery, remove / wire brush /
retighten every post and sheet metal stud you
can find, B+ / IGN / GND.

Nov 10, 2006 | 09:09 AM

navymitch12

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....thanks for bringing the fresh mind to this one....i totally forgot to check the 2 grounds on the back of the driver head. fixed it right up! thanks!

Nov 10, 2006 | 10:11 AM

steveo346

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Quote:

Originally Posted by navymitch12

....thanks for bringing the fresh mind to this one....i totally forgot to check the 2 grounds on the back of the driver head. fixed it right up! thanks!

HAHA HAD THE SAME ISSURE WITH MY CAR

....STUPID GROUND STRAPS

Nov 13, 2006 | 12:44 PM

TheDogofWar

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Quote:

Originally Posted by navymitch12

....thanks for bringing the fresh mind to this one....i totally forgot to check the 2 grounds on the back of the driver head. fixed it right up! thanks!

What is "Driver Head" ? my bat voltage is is fine but my gauge and EFILive are only seeing 11v. Battery tested fine and I already replaced the alternator.