How do I do that with my 89 maf system. I tried what I read in another thread (it worked for them), but I got no blinking at all.

Also on the way home from work the ses light came on for a minute. Code 13 again. Lean o2, but it's running rich according to gas usage and black plugs.

*edit, losing fuel pressure through the injectors ( can't find anywhere else it's going) would also make it run rich I would think.