[jzhawk]

Hello everyone, I have been lurking in the background for a couple of months
now and thought I would join in. I do have a problem that I need help with. I
have a 98 coupe with 40k on the clock, the last two mornings while on my way to work when I put on my brakes or turn signals the headlights will pulse with the load. People think I am flashing at them. Any thoughts? Battery, alternator?
Can anyone reccomend a good tint shop in the Phoenix area?
Adams rocks! thanks to all for steering me to their producta after reading the detail fourm.

 

[Blown Z]

Hello everyone, I have been lurking in the background for a couple of months
now and thought I would join in. I do have a problem that I need help with. I
have a 98 coupe with 40k on the clock, the last two mornings while on my way to work when I put on my brakes or turn signals the headlights will pulse with the load. People think I am flashing at them. Any thoughts? Battery, alternator?
Can anyone reccomend a good tint shop in the Phoenix area?
Adams rocks! thanks to all for steering me to their producta after reading the detail fourm.

Sounds like a possible voltage regulator going bad. That is located within the alternator which would need to get repalced.

 

[iburke]

Welcome to DC...what voltage is your alternator puting out.

 

[jzhawk]

I will put a meter on it tonight. The gauge is registering just above 13 in the car. It does not fluctuate with the brakes or signals?

 

[Kent Piltz]

Double check your main chassis grounds. Loosen, clean & reconnect.

 

[jzhawk]

Thanks Kent, where is the main chassis ground located?

 

[jzhawk]

Anyone?

 

[yn1bennett]

I had an C-4 that did the same thing. I replaced the battery and it made the pulsing worse. I replaced the alternator, and it stopped. Everything was alright again.

Take it to a Auto Zone or a parts place that will put it on the machine to check your system out. They can pretty well tell you what's wrong with it. If I had done that before I replaced the battery, I would have saved about $70 for a new battery.

Good luck.:thud:

 

[Kent Piltz]

Thanks Kent, where is the main chassis ground located?

http://forums.corvetteforum.com/showthread.php?t=896875


Check the link to the other forum.... the thread has some photos and diagrams. kent

 

[jzhawk]

Thanks Kent, that was an excellent post. I am starting to wonder if this may be a source of my problem. I am going to try cleaning all these before I spend money on parts. My car was fine last night and again this morning?

 

[The Bad]

I experienced this and found it to be poor contact on my neg cable to bat connection.

 

[Radioflyer97]

you might have a bad alternator. They eventually wear out. A local auto parts store should be able to tell you if it's going bad.

You might also want to consider the "big 3" upgrade. It involves rinning 3 new 4 gauge wires:
- Positive alternator terminal to positive battery terminal
- Alternator mounting bolt to chassis ground
- Battery negative terminal to chassis ground.

this solves most voltage problems for stock vehicles or cars with moderate sound systems.