|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
01-29-2021, 07:33 PM | #1 |
Senior Member
Join Date: Apr 2012
Posts: 1,542
|
Question About Inconsistent Horn Performance
I know there could be multiple reasons but what is going on when a horn on one car can go full-throated with the car not running, but another car needs the
engine running to hit the high notes? And assume that both cars are basically the same in most respects mechanically/electrically/degree of restoration. |
01-29-2021, 10:21 PM | #2 |
Senior Member
Join Date: Jun 2014
Location: Land of Lincoln
Posts: 3,127
|
Re: Question About Inconsistent Horn Performance
Original diaphragm or reproduced diaphragm ?
__________________
Don't force it with a little hammer tap, tap, tap get a bigger hammer tap done |
Sponsored Links (Register now to hide all advertisements) |
|
01-29-2021, 11:38 PM | #3 |
Senior Member
Join Date: May 2010
Location: Oregon
Posts: 5,959
|
Re: Question About Inconsistent Horn Performance
It comes down to any differences in the horn, or the path of power and ground if all else is the same.
|
01-30-2021, 09:19 AM | #4 |
Senior Member
|
Re: Question About Inconsistent Horn Performance
Try this. Back off on the adjustment screw and hold the horn button down for about 20 seconds. Let that motor run. It’s a motor, it wants to run. While in use, it only runs for a second at a time. Adjust it back and see if this helps.
|
01-30-2021, 09:48 AM | #5 |
Senior Member
Join Date: Sep 2019
Location: Fort Gratiot, Michigan
Posts: 2,296
|
Re: Question About Inconsistent Horn Performance
I had an aoogha problem on 3 of my vehicles, every one was a buildup of residue ( dirt ) over the years. They were filthy inside and likely never had been cleaned. I systematically disassembled with photos of each one, took my time cleaning and reassembled to what sounds like a new horn !
|
01-30-2021, 09:56 AM | #6 |
Senior Member
Join Date: Apr 2012
Posts: 1,542
|
Re: Question About Inconsistent Horn Performance
Sponsored Links (Register now to hide all advertisements)
as regards the status of the internal parts brought up, I'm not sure about that. I got CRS....Can't Remember xxxx. I do think one mistake I've made over the years is to over-lubricate the felt pads inside the horn. |
01-30-2021, 12:41 PM | #7 | |
Senior Member
Join Date: Jan 2020
Location: SF Bay Area
Posts: 1,068
|
Re: Question About Inconsistent Horn Performance
Quote:
Just the joy of working on mechanical devices approaching a century old. JayJay
__________________
JayJay San Francisco Bay Area ------------------------ 1930 Murray Town Sedan 1931 Briggs S/W Town Sedan |
|
01-31-2021, 08:49 AM | #8 |
Senior Member
Join Date: Apr 2012
Posts: 1,542
|
Re: Question About Inconsistent Horn Performance
thanks gang...should I assume that the horn should sound properly with the engine off?
|
01-31-2021, 11:44 AM | #9 |
Senior Member
Join Date: Dec 2017
Location: Guthrie, OK
Posts: 1,144
|
Re: Question About Inconsistent Horn Performance
The generator produces a higher voltage to charge the battery, so the horn will spin faster and have a slightly higher pitch with the engine running. If the horn is very weak with only battery, check connections between battery and generator.
|
01-31-2021, 12:09 PM | #10 |
Senior Member
Join Date: May 2010
Posts: 702
|
Re: Question About Inconsistent Horn Performance
My horn never worked very well until I changed to an alternator. I probably could have tinkered with the generator to improve its performance, but I'm not that well-versed with electrical stuff so I took the path of least resistance! Lights work better too with the alternator.
|
01-31-2021, 12:55 PM | #11 |
Senior Member
Join Date: Jun 2017
Location: Walla Walla, WA
Posts: 1,045
|
Re: Question About Inconsistent Horn Performance
As was mentioned in two of the previous posts, the electrical path both within the horn and external connections needs to be considered. Don't overlook the fact that the horn button itself is part of the electrical path. It is an electrical switch. Its contacts after 90 years may be dirty or pitted. The electrical path of the horn first has a yellow wire that connects directly to the generator [or alternator], and that wire is always hot. The blue/yellow wire is the path to ground which goes through the horn button on its way to ground. If you take a jumper wire and go from the blue/yellow wire contact on the horn to ground and it should blow the horn. If it blows better by using the jumper than the horn button, then that tells you that the horn button may be your problem.
|
01-31-2021, 03:23 PM | #12 | |
Senior Member
Join Date: Apr 2012
Posts: 1,542
|
Re: Question About Inconsistent Horn Performance
Quote:
|
|
Thread Tools | |
Display Modes | |
|
|
Sponsored Links (Register now to hide all advertisements) |
|