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1999 Jeep Grand Cherokee Questions

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so about two months ago I replaced the plugs and starter on my 1999 Jeep grand cherokee 4WD 4.0 inline 6. About three weeks ago i was having trouble with the rpms jumping when the
engine was cold, it'd rev up and down searching, and occasionally die and
not start up due to a dead battery. Replaced the alternator and battery, both
were no good, which solved the dead battery issue, then replaced the
crankshaft sensor which seems to have fixed the rpm issue. but now
occasionally when i go to start it, it'll take a bit to start, or it'll crank strong and
not start at all on the first try. It always fires up eventually, but theres
definitely something not right, thoughts?
When I turn on my truck it’ll turn on for two seconds and then I will turn back off he had an aftermarket alarm system that was hooked up half right and half wrongAnd cannot seem to find the problem I was wondering if I buy a new computer and the computer comes program to my car and then I get a key program to that computer will that fix my problem
1999 Jeep GC Laredo. Got new window regulator and put motor on it. Connected it to door, turned ignition to on position and motor made window go up, but it won't go back down.
My truck overheated tonight I put cooliant in it after it had cooled off. So when I tried to drive it was acting like it didn't Want to pick up speed and the steering wheel felt lose and when I tried to use the breaks it felt like I had no breaks and it started to overheat while driving it as well
I have 1999 Jeep Grand Cherokee Laredo with the 4.7 v8 it’s been sitting for 5 months and I just jump the car it turnover but die right after, while on the gas as well it feel like it has no power. I also saw light white smoke coming from the far right side of the engine bay please help I love this trunk.

Also I did do a oil change on the Jeep before I parked it up for the last 5 months so I know the oil is good, but I check the engine oil and it’s was very low so I added 2 qt and started it and that when it started seeing the little smoke for the shut it off and the abs light pop on the same time. How fully this will be a quick fix.
The jeep was throing code's , the fan relay behind the pasanger's head light , then the crank shaft sincer, the the cam shaft sencer, then the temp cencer , thay told me i need a coputer so i got one but thay said it was pre programed , but i don't think it was so, how do you program a computer for a 1999 jeep grand cherikee larado 4.0L
START OUT AND ENGINE LIGHT COMES ON , CODE P1734. I HAVE SHIFT BUT NOT ALL, CLEAR CODE WITH OBD2 UNIT AND JEEP WORKS GREAT, SHIFTING IS NORMAL. I HAVE REPLACED PRESSURE SWITCH, SHIFT SENSOR, STILL HAVE PROBLEM. ONCE THE CODE IS CLEARED, IT WORK GREAT.
How do we fix the problem?
it starts most of the time but at times I have to put it into neutral than back to park to get it to start
There are a lot of miles on it and also sometimes my battery gauge will go low then right back up again and I replaced the battery last winter. Over the summer my Jeep would do the same thing while in park, RPMs will go up, same thing it’s doing now.
i start my jeep up, put it in gear its a v8 4.7 automatic 99 grand cherokee, it starts out great, but wont shift, as soon as I clear the code with my obd 2 checker all is fine, shift great runs great. What do i need to change out? She a great jeep, did me well in the service. I want to keep her. any help would be appreciated.
Wayne
Clanking noise when driving
jeep will not start,it turns over very good.replaced fuel pump and coil pack,still not starting
Brown sticky substance in the main computer plugs
Hello! Good afternoon. My Serpentine belt broke a few days ago, the wheel locked up and i managed to pull it over. The jeep would turn on and off perfectly fine, just had a very tight steering wheel. Towed to shop they replaced the belt and said there was an issue with a pulley- didnt expalin much more and I was too busy to get into detail. Since the repair the jeep had a weird clanking metal sound when starting, but would still start and run to work that day and back. Next morning jeep won't start at all. Car shop is closed over the weekend. I am wondering if when the serpentine belt broke it messed with something else. And if so if theres anythign at all I can do, already spent a couple hundred replacing the serpentine belt at the shop.
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