does anyone know why the 01 xj i6 4.0 egines die if you don't let them warm up? this isn't with all jeep just with some of them but I have no idea what it is and neither do any of my jeep go to guys

 

Doesn't happen especially to any year, it just means something is wrong with yours and needs repair.

You could look at the TPS first, easy to replace if that's the issue. Also check your battery(load test) and all battery connections should be clean and tight.

 

Thanks I just figured it could be a common issue but I think it's a fuel injector issue