Mikke_Possu

Can somebody help me with this issue?

Last night my 964 horn start screaming continually without any reason.
Only solution to stop this is disable wires from battery. I checked ground point
In my steering wheel but that seems to be fine.
If I connect cable to battery, horn starts shouting almost immediately.
I can start my engine but shouting just doesn't stop.

Any advice?

Brittany964

Rather than disconnecting the battery, just pull the fuse (I think its No. 3 in the fusebox) Then you can at least drive your car 'til you find the problem.

crg53

Check your light switch in the trunk, make sure it turns off the light when the hood is closed. I had an intermitten problem with mine and it would set off the alarm.

Rally Guy

Uhm - just drive it to a World Cup game? You'd fit right in!

RK

Mikke_Possu

Brittany964
Thanks for advice. Need to do this for moving my car to garage.

crg53
I disable whole light some time ago so that can't be reason.

Rally Guy
At least my neighbor would like this idea

BaysideC4

I had the same problem and it turned out that my alarm unit (located under the right side front hood hinge on a 1990). It took on water from a leak under my windshield. It’s not easy to get to but if yours is located there I would pull it out and check to see if it’s dry. I repaired the leak and replaced the unit, problem solved.

SC2993

Just had this issue w/ my 993, there is a horn bracket inside the steering wheel cover that wears out and has to be replaced. This is very common with the 964/993 series. Do a search under horn bracket and you will see some write-ups on the issue. Some folks have fixed this with felt pads to give a little more cushion at the connection.

Mikke_Possu

Are you talk about these bracket's:



and



since these was only broken parts what I find. I order new steering wheel just in case so let's hope that will fix my problem.

jzc28

I second the water in the alarm unit explanation. When I had to deal with a uncontrollable horn, my mechanic pulled the unit, dried it out, and wrapped it in a baggie. Problem solved