hey there, just bought my first cadillac yesterday, 1996 el dorado. great car so far, just some details i gotta check on:

• missing spark occasionally (figured that it's cylinders 4 and 6 so far)
• alternator only gives around 13.0 volts (probably diodes gone bad, no stable voltage)
• some drivetrain and suspension noises 'n stuff
• rpm gage doesn't work
• only blows air to the windshield
• a/c recharge and leak check
• cooling fan always running (only first stage, 2nd didn't turn on yet)

anyhow, if anybody knows common issues on the above mentioned all help is greatly appreciated.