Vincent:
DO NOT let P*7 problems on the range hold you up.
First off, the timer is the usual reason "thuh seff-cleanin' don't work." For some strange reason, a lot of people don't put two and two together and figure out that a non-working clock/timer can hardly be expected to time a self-cleaning cycle. Their conception of it is, "Thuh clock part ain't workin', and the seff-cleanin' don't work neither." And as every upstanding mouth-breathing Amurkin knows, you kin do without the clock, 'cause hit don't really do nothin'.
Second, there are other things that can be wrong, but our own John combo52 knows how to deal with them, and has a huge stash of parts, both vintage used and NOS, to fix problems.
I would seriously, seriously not permit a non-functioning P*7 feature to dissuade me from this range. If it does not work, then by all means use that to help get the price down as far as possible, but let it work in your favor, not against it.