Car seems like it doesn't have enough electricity...

[TachPHD]

Hello, i have a 1990 240sx and i am having some problems.-my temp and oil gauge are always maxed out, it twitches up and down at times. and my rpm is laggy and not that responsive. With this is the speedometer which jumps up and down also and doesn't work at times. sometimes when i press on the brakes, it works and sometimes doesn't. I keep hearing relays click everytime the power goes on and off. My fans lag at times too and it keeps getting power and full power. -My radio powers on and off also. My AFC has power all the time, but it is slow at reading the cars rpm. and the rpm is totally off on the afc. it jumps around alot.

So everything was fine with this car until i installed my speakers and an amp. So... i disconnected the amp and the deck and still, everything said above keeps twitching out on me. It seems like the car is lacking power and some electronics are powering on and off. Sorry if the description is worded wrong. Let me know guys, Thank You.

[JeromeS13]

Hmm, sounds like you may have some grounding issues. Check all of your grounds. Then, have you battery and alternator tested.

-Jerome

[TachPHD]

alright, i'll check that out. thanks

Edit: Well, i got everything to work normally now. thank you for the help.
Modified by TachPHD at 12:05 PM 5/10/2007

[JeromeS13]

You're welcome. Just for future reference, what did you do?

-Jerome