Ford Focus High idle, stalls, battery light on

[trapper81]

I hope someone can give me an idea whats wrong with my car. I have an 02 Ford Focus zx3, for a little while my car has been jerking back and forth while I'm driving down the road but only on occasion and just for a second or two. But now it has started to idle high even after its warmed up. Its been idling between 1200 and 2100 RPM's. It also has started to stall when I stop at a stop sign or light and the battery light came on a few days ago but it goes out if the RPMs are above 2000. The battery is less than 6 months old and so is the alternator but I went ahead and did a load test on the battery. The battery tested good. I checked the alternator with a voltmeter at the battery, its charging around 15v. I have checked for any loose or cracked vacuum hoses with no luck. The check engine light has not come on so I don't have any codes to point me in the right direction. Thanks for any constructive input.

[carriedi]

check the operation of the idle air control valve if there are no vacuum leaks. It may be stuck open.

there is a factory TSB for alt light flicker and high idle cold, idle flare up between shifts,
tsb# -3-19-11, date of issue 9-29-2003
for ford focus 2002, 2003
updated reflash programming. you may want to see if your vehicle falls under this tsb

[KeithK1991]

Just changed my alternator, battery, and crankshaft sensor on my 2004 mercury sable LS. Car ran fine for about 2 days. Won't start after that. I turn the key, and all I get a lot of engine clicking. I hear my fuel pump click on, and all my lights run as well, but the engine doesn't start. Why won't it start?

[carriedi]

if you hear a rapid clicking and the engine is not turning over check your battery and/or battery connections. A rapid clicking (coming from the starter solenoid) is because there is not enough battery power to hold the starter solenoid down to then engage the starter. Your light and other things don't use current like the starter so they will still work. Leave your lights on when you try to start the engine and see if they go dim or stay bright.

Why did you replace your battery and alternator? you might have a draw running down your battery.

[guest]

Have a 03 crown vic 4'7 p-71 I was hpoing to put into my f 150 . ran great in the car ,but after taking it out it only turns 3/4 way around and stops.

[carriedi]

try removing all the spark plugs and see if you can rotate the engine a couple of revolutions. It's possible that you have a hydrolocked cylinder.