RPM + Battery Power

peter212693 · 25 Mar 2006 at 19:09

Hi all

When I am driving during the day my car sits at just on or just over the 1000 rpm mark, I have my radio and my blowers on sometimes. Now at night when I have them on + my lights it will drop to about 700-800 and the car feels like it does just before it stalls but it will drive fine once I increase the rpm with my accelerator. I have a little thing on my battery and it says it’s charged but probably inaccurate, its 3years + old now.

Is this my problem, an uncharged battery?

peter212693 · 25 Mar 2006 at 19:11

SgtTupac said:
It drops because you are "loading" the car. Your draining battery power causing the alternator to run more power. its ok

I have not noticed it before only recently, will charging the battery help?

peter212693 · 25 Mar 2006 at 19:23

moss said:
No the alternator should be doing that for you, its probably the alternator or battery on the way out.

Which is it most likly to be the battery was bought in 2002 and i dont know about the alternator. The car is "P Reg" so 96-97

peter212693 · 25 Mar 2006 at 19:50

Dr Who said:
if its a fuel injection car (likely) the idle control valve may be faulty

I take it thats not good

and yes its an injection