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Banned
Join Date: Aug 2010
Posts: 4,682
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alarm went off by itself at 3 am
83 SC alarm went off at 3am all by itself. i didnt do anything different like set the alarm or activate it. only way at 3 am to turn it off was pull neg terminal at battery. I want to be able to drive the car but seems like when ever i put the terminal back on i get horn going off within minutes. I did a search but nothing like my problem on the forum. also car did start so fuel pump wasnt disabled, just horn going off and key turned on in ignition didnt turn it off either. any help appreciated. regards, mark
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04-26-2013, 10:43 AM
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Registered
Join Date: Jun 2009
Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
Posts: 5,238
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Alarm.
Quote:
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1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." |
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04-26-2013, 11:19 AM
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Banned
Join Date: Aug 2010
Posts: 4,682
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Car is bone stock so guessing its factory...?
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04-26-2013, 11:22 AM
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Registered
Join Date: Feb 2007
Location: Tustin. CA
Posts: 1,287
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If its the stock alarm with key operated switch in the end of the drivers door, check the wiring where it passes through drivers door hinge area.
After hundereds (thousands)? of cycles the wiring on my '81SC began to fail. I would get very random alarm horn honking when opening/closing the door. The wire had broken inside of the insulation and was making random contact. Power mirror wiring was also effected. I ended up removing and repairing the harness. Just a thought. Cooper |
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04-26-2013, 12:38 PM
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Banned
Join Date: Aug 2010
Posts: 4,682
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Until I can get to harness where is the relay located and is there a simple way of jumping it out?
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04-26-2013, 12:57 PM
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Registered
Join Date: Jan 2006
Location: Clayton NC
Posts: 1,674
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Why not just remove the horn relay or fuse or whatever you have on an SC? Then you can drive it until you research the problem. How often do you use the horn? Did that on the 70 when the wire broke in the wheel and grounded thus setting off the horn. Haven't fixed it yet and don't miss the horn.
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gary 70T coupe forever almost done 88 Carrera Targa diamond blue |
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04-26-2013, 01:07 PM
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Registered
Join Date: May 2003
Location: Canada
Posts: 501
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Any simple way of disarming alarm(without losing use of horn)? It seems whenever this is discussed it gets confusing very quickly.
My concern as well is that the alarm will go off at some point disabling the car?? I never use it and am afraid to.
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1987 Carrera, Venetian Blue. |
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04-26-2013, 04:49 PM
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