I need help with my jeep. Its a 93 jeep grand Cherokee 4x4 with a 4.7 liter engine. I just replaced the charging system.... including the computer.... and it still dies on me while driving down the street. I have also replaced the fuel filter.... and did a tune up. I do live in las vegas.... so I am wondering if the heat is a factor.... but it is not overheating. Please help.... I have no ideas left....thank you for your help.

 

I've never heard of a 93 with a 4.7

 

You sure it's a 4.7? They made a single year(2001) of the 5.9 edition motors.

 

Yeah, but! The 4.7 won't even fit on the 5.9 mounts and the 4.7 didn't exist in 93.

 

I apologize for the typo.... its not a 4.7..... its a 4.0

 

AH! The bullet-proof 6! Two things come to mind. The CPS and PCM should be checked out for proper function when it dies. This is OBD I so it should be easy to diagnose.