First time posting, I bought a 94 jeep Cherokee 4.0l that sat for 7 years. It was supposed to have been rebuilt and after it was put back together and they had no fire. I got it put a battery in it and noticed that the fuel pump wasn't coming on so I replaced the fuel pump, fuel filter and blew out the lines. It started but had really rough idle and died after a few minutes and wouldn't start back till the next day. I replaced the crank sensor by transmission, and coil and it changed nothing. Still have a rough idle and died with no start till next day. I replaced MAP sensor and now it just cranks. NEED HELP PLEASE

 

I would check the IAC (idle air control valve), take it out and clean it. With a car that has sat for 7 years the IAC could need cleaning. Also any codes?

 

Also the TPS. Test it, I mean. Don't just buy parts and hope they fix the problem. Test your way to a diagnosis. It's a lot cheaper and a lot less frustrating.

First thing to test is whether you have spark or fuel. Also test fuel pressure. TEST, as in, with a guage. Check your local parts store to see if they can rent one to you. Many will rent tools for free.

By the way, was that crank sensor a Mopar? Or aftermarket? These things are pretty sensitive about their sensors, especially that one. To have a failure out of the box or within minutes is actually pretty common.