Wierd electrical problem (alternator?)
Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 6,080
Likes: 3
From: Clearwater FL
St. Jude Donor '06
Wierd electrical problem (alternator?)
Have had an intermittant ground loop in the stereo (stock, but used to have a sub/amp which I took out) over the past few months that I haven't looked into much. Yesterday it was bad, so I was cruising with the stereo off and the lcd display would cut on and off every once in a while, the tach would jump and make a tick noise, and the motor would seem to hiccup real quick. When stopped and idling the car would almost stall and idle around 400 rpm, but was fine if I gave it a little gas. If I turned the stereo on, the lcd display (speedo) would blink off real quick.
Today it was running fine except the voltage was running from 13.9 - 15.5 not rpm dependent. It is usually right at 14.1 no matter what.
Could the alt (regulator) be causing all of this?
Today it was running fine except the voltage was running from 13.9 - 15.5 not rpm dependent. It is usually right at 14.1 no matter what.
Could the alt (regulator) be causing all of this?
Melting Slicks
Joined: Nov 2007
Posts: 2,830
Likes: 147
From: Gainesville FL
Maybe
Have had an intermittant ground loop in the stereo (stock, but used to have a sub/amp which I took out) over the past few months that I haven't looked into much. Yesterday it was bad, so I was cruising with the stereo off and the lcd display would cut on and off every once in a while, the tach would jump and make a tick noise, and the motor would seem to hiccup real quick. When stopped and idling the car would almost stall and idle around 400 rpm, but was fine if I gave it a little gas. If I turned the stereo on, the lcd display (speedo) would blink off real quick.
Today it was running fine except the voltage was running from 13.9 - 15.5 not rpm dependent. It is usually right at 14.1 no matter what.
Could the alt (regulator) be causing all of this?
Today it was running fine except the voltage was running from 13.9 - 15.5 not rpm dependent. It is usually right at 14.1 no matter what.
Could the alt (regulator) be causing all of this?
Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 6,080
Likes: 3
From: Clearwater FL
St. Jude Donor '06
Year is a 96 (in the sig). Battery should be good (1 year old). I think (fear) there may be a couple things going on. The alternator would be high on the list and easy enough to test / swap out.
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Your alternator is NOT working properly as told by your dash voltmeter!
It could cause the problems you are experiencing. One way to prove it is to unplug the alternator and see if everything electrical works as it is supposed to.
It could cause the problems you are experiencing. One way to prove it is to unplug the alternator and see if everything electrical works as it is supposed to.
Safety Car
Joined: Sep 2000
Posts: 3,524
Likes: 4
From: Hinckley Ohio
Have had an intermittant ground loop in the stereo (stock, but used to have a sub/amp which I took out) over the past few months that I haven't looked into much. Yesterday it was bad, so I was cruising with the stereo off and the lcd display would cut on and off every once in a while, the tach would jump and make a tick noise, and the motor would seem to hiccup real quick. When stopped and idling the car would almost stall and idle around 400 rpm, but was fine if I gave it a little gas. If I turned the stereo on, the lcd display (speedo) would blink off real quick.
Today it was running fine except the voltage was running from 13.9 - 15.5 not rpm dependent. It is usually right at 14.1 no matter what.
Could the alt (regulator) be causing all of this?
Today it was running fine except the voltage was running from 13.9 - 15.5 not rpm dependent. It is usually right at 14.1 no matter what.
Could the alt (regulator) be causing all of this?
Next time out the car would not idle properly, trying to idle too low, just like you.
My problem was simply a loose connection at the battery terminal.
http://forums.corvetteforum.com/c4-t...g-voltage.html
Hope yours is as simple as mine...put a wrench on it and snug it down..
