96 LT4 Erratic Voltage
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,061
Likes: 214
From: Epping NH
96 LT4 Erratic Voltage
Started my car up (96 LT4 Coupe) this weekend for it's once a month winter wake up procedure and it reminded me of a problem I was starting to see last fall.
I haven't dug into too deeply, but wanted to see what others felt...basically I'm seeing the voltage in my car jump erratically almost constantly between 13 to 15 volts while running. In the past I recall it was pretty constant sitting on one voltage.
Wondering if this is a bad ground? Bad voltage regulator? Bad Alternator? Failing Battery?
I did have a @#$% mouse get into the dash about 5 years ago and had some issues with the PKE module, but it was replace and car has seemed fine since...still back of my mind has me worried it's a damn wiring issue in the dash the little bastard caused.
I haven't dug into too deeply, but wanted to see what others felt...basically I'm seeing the voltage in my car jump erratically almost constantly between 13 to 15 volts while running. In the past I recall it was pretty constant sitting on one voltage.
Wondering if this is a bad ground? Bad voltage regulator? Bad Alternator? Failing Battery?
I did have a @#$% mouse get into the dash about 5 years ago and had some issues with the PKE module, but it was replace and car has seemed fine since...still back of my mind has me worried it's a damn wiring issue in the dash the little bastard caused.
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Joined: Mar 2016
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From: Southlake, TX
Pro
Joined: Aug 2007
Posts: 668
Likes: 38
From: Austin TX
I had a strange thing happen on my 92 recently. After replacing the alternator, it was sending 17 volts constant to my system. The tang had broken off the alternator connector and wasn't making good contact to the internal voltage regulator. After replacing the connector, problem was solved.
Last edited by mixalive; Jan 26, 2017 at 03:22 PM.
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,061
Likes: 214
From: Epping NH
I had a strange thing happen on my 92 recently. After replacing the alternator, it was sending 17 volts constant to my system. The tang had broken off the alternator connector and wasn't making good contact to the internal voltage regulator. After replacing the connector, problem was solved.
and from what I understand getting to the BCM is a PITA.
Last edited by bac22; Jan 31, 2017 at 12:04 PM.
