Car just shuts off???
Thread Starter
Drifting
Joined: May 2008
Posts: 1,462
Likes: 43
From: Choctaw Country
Car just shuts off???
Ok guys, ,,,, replaced the rad and fans recently on my otherwise stock L-48 1975 coupe.... especially the alternator,
Car runs cool
A/C works good
Alt meter is way over to the right on about 35 or 40
Wife is happy! (did I mention it 103 in the shade?)
Today I'm on my way back to the house....
In traffic
A/C on
Radio jammin
Its dusk
I reach up and turn on the lights and the car dies,,,,,and I mean dies so hard that I don't have any power for anything. No click no radio nothing.
I'm guessing my upgrades have tasked my poor stock alternator to the point of shock? I sat there for 2 minutes and then the power came back and the car started right up. I got on straight to the house without A/C radio or any goodies and thanked the good Lord when I pulled in the garage.
Where do I start and what am I gonna be looking for?
thanks
Car runs cool
A/C works good
Alt meter is way over to the right on about 35 or 40
Wife is happy! (did I mention it 103 in the shade?)
Today I'm on my way back to the house....
In traffic
A/C on
Radio jammin
Its dusk
I reach up and turn on the lights and the car dies,,,,,and I mean dies so hard that I don't have any power for anything. No click no radio nothing.
I'm guessing my upgrades have tasked my poor stock alternator to the point of shock? I sat there for 2 minutes and then the power came back and the car started right up. I got on straight to the house without A/C radio or any goodies and thanked the good Lord when I pulled in the garage.
Where do I start and what am I gonna be looking for?
thanks
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Ok guys, ,,,, replaced the rad and fans recently on my otherwise stock L-48 1975 coupe.... especially the alternator,
Car runs cool
A/C works good
Alt meter is way over to the right on about 35 or 40
Wife is happy! (did I mention it 103 in the shade?)
Today I'm on my way back to the house....
In traffic
A/C on
Radio jammin
Its dusk
I reach up and turn on the lights and the car dies,,,,,and I mean dies so hard that I don't have any power for anything. No click no radio nothing.
I'm guessing my upgrades have tasked my poor stock alternator to the point of shock? I sat there for 2 minutes and then the power came back and the car started right up. I got on straight to the house without A/C radio or any goodies and thanked the good Lord when I pulled in the garage.
Where do I start and what am I gonna be looking for?
thanks
Car runs cool
A/C works good
Alt meter is way over to the right on about 35 or 40
Wife is happy! (did I mention it 103 in the shade?)
Today I'm on my way back to the house....
In traffic
A/C on
Radio jammin
Its dusk
I reach up and turn on the lights and the car dies,,,,,and I mean dies so hard that I don't have any power for anything. No click no radio nothing.
I'm guessing my upgrades have tasked my poor stock alternator to the point of shock? I sat there for 2 minutes and then the power came back and the car started right up. I got on straight to the house without A/C radio or any goodies and thanked the good Lord when I pulled in the garage.
Where do I start and what am I gonna be looking for?
thanks
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Which relay are you talking about?
Drifting
Joined: Jul 2005
Posts: 1,562
Likes: 2
From: Spring Texas
You need a bigger alternator. If your ammeter is registering huge numbers, (35 - 40 amps) you are using huge amounts of amps and your current alternator is not keeping up. You should only be showing higher amps at idle,and that should still be just 10- 15 amps. Go to at least a 100 amp alternator. Upgrade from an SI to CS144 alternator. Search the forum about wiring issues for higher alternator output and fans. Make sure that your wiring is adequate - relays, controllers, switches, etc.
Thread Starter
Drifting
Joined: May 2008
Posts: 1,462
Likes: 43
From: Choctaw Country
You need a bigger alternator. If your ammeter is registering huge numbers, (35 - 40 amps) you are using huge amounts of amps and your current alternator is not keeping up. You should only be showing higher amps at idle,and that should still be just 10- 15 amps. Go to at least a 100 amp alternator. Upgrade from an SI to CS144 alternator. Search the forum about wiring issues for higher alternator output and fans. Make sure that your wiring is adequate - relays, controllers, switches, etc.
Done this afternoon and no more problems!
thanks
r/wdd
