power window
Thread Starter
|
Junior Member
Joined: Dec 2001
Posts: 1
Likes: 0
From: downey california
power window
my passenger window is a bit slow ...when I roll it up and down with the engine of....but when I have my engine running its just fine .....any idea how I cloud fix this or what's going on ? 
Senior Member
Joined: Aug 2001
Posts: 1,609
Likes: 0
From: Summerville, SC Near Historic Charleston
Hey justaduck,
Just don't shut off the engine
. No, really the alternator apparently can keep up with the current demand and maintain sufficient voltage to the window motor better than the battery by it's self. I wouldn't think it shouldn't make much difference either but apparently your battery can't keep up with the demand and maintain the same voltage at the window motor that the alternator can.
I would check your battery out with a load tester to see if it is doing okay too. Also, don't forget that your system voltage can be as high as 14.2-14.5 volts while the engine is running. The battery will have a hard time maintaining more than 12 volts while the engine is off and the window motors are drawing current. With that said, there may always be a slight difference in the window speeds from engine off and on but I haven't tested it.
My $0.02
DaveMan
Just don't shut off the engine
. No, really the alternator apparently can keep up with the current demand and maintain sufficient voltage to the window motor better than the battery by it's self. I wouldn't think it shouldn't make much difference either but apparently your battery can't keep up with the demand and maintain the same voltage at the window motor that the alternator can.I would check your battery out with a load tester to see if it is doing okay too. Also, don't forget that your system voltage can be as high as 14.2-14.5 volts while the engine is running. The battery will have a hard time maintaining more than 12 volts while the engine is off and the window motors are drawing current. With that said, there may always be a slight difference in the window speeds from engine off and on but I haven't tested it.
My $0.02
DaveMan