Doesn't run
 

Hi,
I have 2012 Jeep Cherokee 3.7 V6 4x4, it has had a list of problems and now it doesn't run anymore.
Changed 2 ignition coils and spark plugs, turned out it needs a head gasket replacement, ordered the kit and had it replaced, also new thermostat (before that car was driven to another location)
Next the starter motor had blown up inside itself, replaced it and still no go.
And now changed valve cover.

The car starts only on 3 cylinders and dies about 20 seconds later. Out of ideas what to check for or what the problem might be.

Also tried teaching the key, no luck with that.

Hope maybe somebody has experience or knowledge what I could do about it.

Much appreciated, thank you!

You are in the wrong forum, this is for 2014+ Cherokees. Try your question in the XJ forum.

https://www.cherokeeforum.com/f2/

.

No such thing as a 2012 XJ, unless of course, he has one of the Chinese knockoffs. I assume he's talking about a 2012 Grand Cherokee, so https://www.cherokeeforum.com/f5/