Started van and ALL indicator lights on.trans shifted hard would not go out of 1st gear

After jumping my van, my son accidentally touch the positive negative jumper while still connected to the van.. Now don't want to start.. I think it shorted the battery

All lights will flicker or sometimes turn completely off at night.

I was driving at the time and suddenly lost oil pressure and the car would not start after that.

I was told the alternator was knackered so have bought new one and fitted it but lights still pulse. I think I need to replace the regulator but don't know where it is or where i get one

I have duel temp controls.

not using any oil between changes motor is clean and not leaking but its getting a few miles on it

2002 chrysler voyager

car seems to idle fine when air is off. only seems to act up when air is turned on. We have cleaned Throttle body. Spark plugs are in good shape...wires are good.If it stalls, I have to turn the key all the way off for one or two seconds or else the starter will turn over but will not start. COuld it be the EGR valve

The overhead gauge reads -40. I have replaced the actual sensor behind front grill but that did not fix it. Are there any fuses, relays or programming that needs to be replaced/corrected to get this gauge to start reading accurately again?
Thank you!

I turned into a parking spot and when I came back out the key wouldnt turn in the ignition and then i locked the steering wheel up trying to get the key to turn. What should I do or how would I go about figuring out the issue?