Does the digital odometer stay on when to turn the engine off and remove the key from the ignition?

My 1999 Dodge Grand Caravan 3.8L 6 cylinder engine. Well it has been shorting out and giving false check engine errors I wanted to know roughly what it would run to completely re-wire the entire van and replace all window motors.

When this happens the dash warning lights come on as is normal, but nothing else happens. Is the problem in the ignition switch? This only happens once or twice a week.

The noise seems to be coming from the upper area of the firewall. I have already replaced the struts and strut mounts but the noise is still there. A local shop has also changed many of the suspension bushings with no luck, any sugestions?

When my car shifts into 2 it makes the steering wheal jerk to the left a little, and sometimes not at all

also is there some way to check a/c behind dash

I have been trying what's on the internet ie. Stop and go traffic on city streets between 25-40 mph and freeway drives for 5 miles or more at 55-60 mph and still system is unready just failed my 3rd attempt help!!!!

if the vehicle is run everyday it will start, but if it is not started for a couple the good battery has to be charged. what could be killing my battery?

none of the windows work at all. HELP We are using this van for our grandsons we are raising.