Electrical problem? My 1998 Subaru Forester was running fine, then the ABS light came on. I would go off at about 40mph, then come back on when I stopped. After several stops the dash lights went out, it stalled, and would not start. After about ten minutes it started, but then repeated the symptoms after about five minutes, and this time would not start. Any suggestions?

SOURCE: horn not work on subaru forester

Their is no connection between your antilock brake system [abs] and your horn. Most of the time when the abs light goes on the problem is in the sensor and not the abs. Regarding the horn, I would check the fuse that controls the horn. look in your owner manual for the fuse diagram and replace that fuse with a new one the same amperage.

SOURCE: subaru forester heater

take back to the dealer,hopefully the will find that the blend door cable is off or not adjusted properly

SOURCE: 2003 subaru forester stalls at idle (automatic)

This is a typical form of either dirty injectors which you can clean with a high octane gas at least 2 tanks or you can get an injector cleaner which can put in when you have a low fuel about a quarter left.

SOURCE: Subaru Forester 1999 GLS spark plug gap?

spark plug make= ngk
plug type =BKR6E-11
GAP=1.1mm A TURBO MODEL WILL BE 0.7-0.8 MM GAP

SOURCE: 2000 subaru forester ignition coil wiring

Are there any other possible problems, or you are just not receiving spark at all now?

The coilpack could be dead and just need replaced. If you have a voltmeter or a test light, check the wiring on both sides of the coilpack harness to make sure it is receiving power.
I don't believe Subaru used ignitors past '99, but if they did, your should be located on the firewall behind the throttle body. Make sure it's plugged in and receiving power.

Coil packs do go bad from time to time. I had to replace mine in my
'98 Impreza a while back.

Goodluck!