How do I operate the alarm system on a 1984 porche 928s...mine goes off every hour.

How long has it been since it had a full tune up? Spark plugs are definitely a good place to start, but there are several things that can cause your description

It is under the car by the gas tank. Should be under a cover, the fuel pump is right next to it.

this is a good one,as the brakes are straight out of a golf gti 16v,any golf handbook will do.(just undo the bleed nipple, then force the pistons back into the caliper,closing the nipple before you release pressure to stop any air getting in..then clamp the brake pipe.otherwise its just 2x bolts and a spring clip....

you need to reset the alarm system with the remote(s) as per the book.(you can leave it unlocked as the car has an immobiliser and cannot be hot wired.) i leave mine unlocked all the time and just use the key to start it.how many people respond to the alarm going off??
I live in england,bad car crime area.....

http://www.nichols.nu/tips.htm
try bridging the contacts for the fuel pump relay,also check this site somw good 928 info.. good luck

Get a new car! JK - my 2002 Sable does the same thing. It can be 5 times a day then not for a month, or 2-3 times a day for a week straight. It happens in different locations and different weather and different times of the day. To my knowledge has never done it in my garage at home.
I have not called a dealer. Has anybody ever found the real problem? Could it be in the remote itself? I tried leaving it unlocked at work, but yesterday it went off just as I was reaching toward the door handle.

What you do is take the alarm out of the system. My 95 GLX had the same problem, and what I did was unhooked the whole alarm system (Located behind the headlight switches and furthest left, inside the car, vent.) You unplug all the connector's to it, and splice the two thick red wires together on the 6 pin connector. Works fine, Mine fired right up after that. No problems.

just one inline

The seats should be on fuse 14 fuses numbered from left to right I think the relays are actually under the seats