Team Chevelle banner

Intermittent Voltage Spike problem

1849 Views 5 Replies 2 Participants Last post by  MALIBRU
I'm expierenceing a intermittent voltage spike problem according to my voltage gauge. I have converted over to a "CS" style alternator on my 66 chevelle. Theres nothing in paticular that causes it to do it. I could drive for 30 minutes and have 14 volts and then slow down to stop and it will spike back and forth, burying the needle. Driving to work this morning it did it for about 3 miles, sometimes staying pinned for 30 seconds are so. Ive replaced the voltage regulator and battery and still expierencing the same problem. Any suggestions?
1 - 3 of 6 Posts
My volt gauge used to flutter. Until I tightened the gauge ground tight.
I have a CS-144. Bought a new forward harness from M&H with the conversion built in. The alternator connector has just the brown wire (idiot light). I have a big fused 1-foot cable from the alt to the battery. No remote sensing wire since the battery is right there - no horn relay distribution bus like OEM.

Are you saying you replaced the alternator's 'internal' voltage regulator?
1 - 3 of 6 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.