What is your issue?

When coords are specified in tuple format, their names are silently ignored when dims names are also specified.

The following expression yields a DataArray that retains no reference to the otherwise specified coords of a, b, and c, in favor of the positionally-associated names of dims, x, y, and z.

DataArray(
    data=[[[1]], [[2]], [[3]]],
    dims=["x", "y", "z"],
    coords=[("a", [5, 6, 7]), ("b", [8]), ("c", [9])]
)

The result is:

<xarray.DataArray (x: 3, y: 1, z: 1)> Size: 24B
array([[[1]],
       [[2]],
       [[3]]])
Coordinates:
  * x        (x) int64 24B 5 6 7
  * y        (y) int64 8B 8
  * z        (z) int64 8B 9

Even though this behavior is documented, I think the user should be warned that the coordinate names do not match the dimension names and have been overridden.