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porscha
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Alarm system going off random..
i just took my car out of storage and now my alarm systems (OEM ) is going off random.... no one is around it and it goes off.... any ideas ? porsche 944 1986....
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec |
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04-03-2012, 11:24 AM
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porscha
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Quote:
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec |
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04-03-2012, 02:37 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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Hi Matty,
You posted the alarm goes off randomly. Sometimes disconnecting the battery--waiting a few minutes and reconnecting may reset the alarm. I do not know if this will help. This will not fix the alarm only bypass it. You have the '86 944 so read the note on bypassing the alarm at the bottom of the page--check which relay you have. There are 3 styles. Bypassing factory alarm 944 Online Forum - The Porsche 944 Forum For The 944 Enthusiast. This may be a last resort solution. Try at your own risk. It sounds like a wire, ground, coil connection is shorting. Sorry, not much help. John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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04-03-2012, 03:25 PM
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porscha
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Quote:
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec |
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04-03-2012, 04:23 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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matty,
Clarks garage also has the bypass info with pictures: Alarm System - Bypassing A cracked ignition switch could also be the problem (?). GL John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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04-04-2012, 05:03 AM
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Join Date: Dec 2007
Posts: 1,231
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The horn is located behind the battery for the alarm. I had the same problem and I just removed the horn. Now the lights flicker occasionally but it is more of a temporary solution. I will look into the ignition coil as well. I recall reading that a bad battery can cause the alarm to go off, although I have no idea why that could cause a problem. If you find a fix, please let us know!
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04-04-2012, 11:57 AM
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Registered
Join Date: Apr 2004
Posts: 15
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94 968 alarm going off at ramdom
My daily driver 968 's alarm just randomly started going off whenever the car is locked. Ideas on the cause?
Gary |
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02-22-2013, 09:14 PM
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Registered User
Join Date: Sep 2010
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I have the same problem with my '87 944S. I replaced the brain, but no joy.
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06-26-2014, 05:05 AM
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Registered
Join Date: Jun 2006
Location: O.C. CA
Posts: 4,587
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it's frequently a pin switch, like at one of the doors, the hood, the glove box, etc
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06-26-2014, 05:20 AM
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Check and make sure there isn't any moisture in the fuses / relay compartment. My son had that problem once after washing his car...don't ask...he isn't a car guy.
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John |
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06-26-2014, 05:21 AM
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Registered
Join Date: Jan 2008
Location: Mid-Ohio
Posts: 24
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I know this is an ancient thread. Thank you all for the guidance
Just went through this on 93 968 and mine was the hood switch. It was intermittently working and misaligned, just worn out. Unplugged it and immediately got single blink condition |
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05-22-2023, 06:52 AM
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Join Date: Jan 2008
Location: Mid-Ohio
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follow up. alarm started going off again and this time i traced it to frayed / broken wiring in the harness that runs from the engine bay into the hood...seems over time the bending of the wires from opening / closing the hood caused the wire for the hood sensor to break and go open. intermittently
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04-14-2025, 07:36 AM
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1980 Porsche 911 SC may she RIP
Porsche 944 S
Ford Fusion
