924s intermittant horn

[porschemech]

Hello all
My 87 924s has an intermittant horn depending on steering wheel position.
I have replaced the slip ring, relay, horn pad and horns, still the same.
I think I saw somewhere about the U-joints in steering column failing that could cause this?
The ground wire on the steering rack is intact but have not checked it for continuity
If it is the bad U-joints is there another way to deal with this other than removal of column and U-joint replacement?
Maybe jumper wire?
Thank you, Karl

[944 Ecology]

Originally Posted by porschemech

Hello all
My 87 924s has an intermittant horn depending on steering wheel position.
I have replaced the slip ring, relay, horn pad and horns, still the same.
I think I saw somewhere about the U-joints in steering column failing that could cause this?
The ground wire on the steering rack is intact but have not checked it for continuity
If it is the bad U-joints is there another way to deal with this other than removal of column and U-joint replacement?
Maybe jumper wire?
Thank you, Karl

You could try jumper wires to bridge around the U joints (there are two). The U joints become loose and the electrons cannot jump the gap.

[porschemech]

Hello
Thank you for the reply.
Am I to understand placing a jumper wire under the U-joint pinch bolt and nut with electrical eye connectors?
Have you heard of anyone else having this problem and their fixes?
Thank you

[944 Ecology]

I had this problem on my 83 944 (long gone), and, being too cheap and lazy to fix it properly, used bare wire and hose clamps on cleaned up metal to shunt around the u joint that was the problem... worked until a divorce forced the sale... still working now, afaik.

[porschemech]

Would you be able to furnish me with photos or a drawing how you did this?
Thank you

[944 Ecology]

rudimentary drawing, iirc.

[porschemech]

Thank you George , I will give this a try.

[MaSnaka]

I was driving my son's Boxter while he was deployed overseas. With the top down and me being too cool, every time I approached a red light and hit the brakes, I was hearing a horn honking. I would look around to see who it was but no luck...no hot chicks were honking at me. This kept happening over and over. Realized it was my horn making all the noise. According to the repair shop the horn pad was putting enough forward pressure when the car was braking to set off the horn. Told me an easy fix was to stuff some rubber vacuum hose behind the horn pad. Which I did and it worked. I could still activate the horn by pressing but it wasn't so sensitive to braking. Thought I would share.

[Monkey Wrench]

you can check but I seem to remember other cars grounded the horn rather than supply power. I think more often the hot is switched on things but in this case maybe it saves running that wire back from the switch.

if you are looking at intermittent wiring issues, some meters have a bar graph option or you can use an analogue meter to see better. otherwise you are looking a flipping digits which can be a bit harder to interpret. the beep function or a test lamp might help too.

maybe black wire with black tape overtop would be fairly well hidden ?

The cobra replica sounds interesting !