Our Son bought a used 2002 Jeep Liberty with a V6 4WD. Since he has had it he has been plagued with off and on warning light's, one being the oil light. But when it was checked out he had good oil pressure.
Well the other day he gets ready to leave work and it cranks but runs really rough and just barely will go. He took it to a shop and they diagnosed a bad #2 coil pack. So he goes gets new plugs and a new coil pack but when he gets over here it is running OK. So we changed out the coil pack and all the plug's.
The next day he drive to a town about 20 miles away goes in to a store and comes back out and boom it is running rough again and this time it keeps shutting down. He made it to a shop and once again the computer says bad coil pack on #2. The guy swaps out the coil pack with #1 and no change. So according to my son the mech does a compression check and says no compression you need a new engine.
I don't buy the new engine. It has been my experience that when something mechanical goes it doesn't come and go. I think there is something electrical going on, a loose connection or bad sensor something like. I just wanted to get opinions from you more experienced mechanic's. Thanks