Blown head gaskets, leaks and an automatic transmission needing a rebuild are all fairly common with the EL. Best to see where your engine and transmission are sitting in their lifecycle before buying one.
Blown head gasket
Automatic transmission issues
Leaking coolant
Ignition coil issues
Leaking a/c condensers
Oil leaks
Body panel squeaks and irregularities
The best way to accurately identify electrical and mechanical faults in a modern (mid 90’s onwards) car is to use an OBD2 scanner