setting off car alarms - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

firedrop · 11-09-2013, 08:16 AM

Anyone ever have this happen to them? I was driving around south philadelphia last night (narrow streets lots of cars on either side) and just driving around normally an alarm went off.. i thought it was from my exhaust but wasnt quite sure, so i drive up the street and get on another street.. so i pull up next to some cars and rev it to 2.5k rpms, sure enough another alarm goes off. Why does noise cause alarms to go off? I wasnt trying to be a dick, just wanted to see if it really was my car doing it

ravensjeff · 11-09-2013, 08:19 AM

This happens all the time when I ride the Harley thru streets with townhouses on each side. I try n avoid it.

maroman1138 · 11-09-2013, 08:23 AM

Ha Ha! I do this all the time. It's the vibration and sensitivity the alarm is set at.

2012-1822 · 11-09-2013, 08:37 AM

Lucky, I wish I could get car alarms to go off in the parking decks on campus.

I had a buddy in high school who put a glasspack muffler on his '88 Toyota 4 banger pickup, that thing would set off some alarms, sounded terrible, but just hit that right pitch.

RollaMo · 11-09-2013, 09:13 AM

Sound waves create vibration.

The louder the sound, the more vibration.
I am sure you have seen speaker cones vibrate, and the louder you turn the music up the more they vibrate.

Some (not all) car alarms have "motion" sensors.
And in some cases the sensitivity to motion can be adjusted.
Drive by one of those cars with stock quiet exhaust and nothing happens, but drive by with a loud exhaust system and there is the possibility of setting off the alarm.

Goober · 11-09-2013, 09:54 AM

Yes.

Some alarms are very sensitive. I remember years ago I lived in an apt complex and this kid had a Jeep with an alarm that if you just walked by it it would go off. A robot voice like Robocop would say "Step Away From The Car!" And then all these loud obnoxious police siren sounds would go off. This would happen all night long and it used to piss me off.

MrWray · 11-09-2013, 10:41 AM

Quote:

Originally Posted by Goober

Yes.

Some alarms are very sensitive. I remember years ago I lived in an apt complex and this kid had a Jeep with an alarm that if you just walked by it it would go off. A robot voice like Robocop would say "Step Away From The Car!" And then all these loud obnoxious police siren sounds would go off. This would happen all night long and it used to piss me off.

"Protected by viper...stand back" :p

MrWray · 11-09-2013, 10:50 AM

I set off a few car alarms here and there.

Twoblindsheep · 11-09-2013, 11:38 AM

yeah i do it all the time at the parking lot at work.. its always the trucks tho.. first time happened i thought i was my car since i just started it lol

RolltideSS · 11-09-2013, 12:53 PM

Yep, I can usually find 2 cars a day in the parking garage that go off when I go past - I know I'm not a mature adult because it makes me smile

Jenner · 11-09-2013, 01:03 PM

Mine does too.. I really like doing it too. I try to avid it when it's really late

BottlefedSS · 11-09-2013, 01:08 PM

Mine does it all the time. I set my co-workers truck alarm off once and I told him my car scared his truck.

ChrisBlair · 11-09-2013, 02:24 PM

Quote:

Originally Posted by firedrop

Anyone ever have this happen to them? I was driving around south philadelphia last night (narrow streets lots of cars on either side) and just driving around normally an alarm went off.. i thought it was from my exhaust but wasnt quite sure, so i drive up the street and get on another street.. so i pull up next to some cars and rev it to 2.5k rpms, sure enough another alarm goes off. Why does noise cause alarms to go off? I wasnt trying to be a dick, just wanted to see if it really was my car doing it

My '70 Buick has a 7.5L, big tube headers, 2.5" exhaust. Yup. It sets off car alarms. Vibration.

SS4PK · 11-09-2013, 07:24 PM

Mine does it in the parking garage. It sets off the glass breakage sensor.

11-09-2013, 08:16 AM	#1
firedrop Drives: 2012 2ss/l99 a6, victory red Join Date: Jun 2013 Location: philadelphia Posts: 387	setting off car alarms Anyone ever have this happen to them? I was driving around south philadelphia last night (narrow streets lots of cars on either side) and just driving around normally an alarm went off.. i thought it was from my exhaust but wasnt quite sure, so i drive up the street and get on another street.. so i pull up next to some cars and rev it to 2.5k rpms, sure enough another alarm goes off. Why does noise cause alarms to go off? I wasnt trying to be a dick, just wanted to see if it really was my car doing it __________________ 2012 2ss l99/a6 CAI, custom catback with flowmaster series 10s

11-09-2013, 08:19 AM	#2
ravensjeff 100% Chevy & Harley Man Drives: 2010 2SS: Blown LSX 376-B15 Join Date: Feb 2009 Location: Eldersburg,MD Posts: 2,211 View My Garage	This happens all the time when I ride the Harley thru streets with townhouses on each side. I try n avoid it. __________________ LSX 376-B15, TVS2300 SC, Harland Sharp Rockers w/ Trunion Bearings, ATI Balancer/keyed, AR LT Headers/Borla Catback Exhaust, DSS 1400 HP Axles, DSS aluminum driveshaft, 3.70, Hotchkis Springs/Sway bars, Forgeline SO3P Aluminum Wheels (20x9.5 F/20x11 R)w/ Hidden Titanium Hardware, Nitto NT05 Tires (27540ZR20 F/31535ZR20 R), Billet LPE brake/gas pedals, Escort 9500ci Radar Detector Laser Jammer, Roto Fab CAI with Ice Silver box, Carbon fiber tube/MAF Housing Assy, LPE Aluminum coil covers, SS9 Sleeper Fiber Glass Hood (ACS), Carbotech 1521 ceramic brake pads, Elite catch can.

11-09-2013, 08:23 AM	#3
maroman1138 Drives: 2011 SS/RS LS3 Join Date: Jan 2011 Location: Houston TX. Posts: 439 View My Garage	Ha Ha! I do this all the time. It's the vibration and sensitivity the alarm is set at. __________________ 2011 1SS/RS LS3 - Stage II Ported Heads, Stage II Comp Cam, Ported T.B., Hurst Shifter - 0BX LT Headers - CAT delete, Pype Bomb Axle-Back Exhaust - Muffler delete - 4.5 Resonated tips, Spectre CAI, - 480 RWHP 442 TRQ. Dyno tuned by ARD.

11-09-2013, 08:37 AM	#4
2012-1822 Drives: Black ZL1 Join Date: Apr 2013 Location: City of Champions, Alabama Posts: 3,698	Lucky, I wish I could get car alarms to go off in the parking decks on campus. I had a buddy in high school who put a glasspack muffler on his '88 Toyota 4 banger pickup, that thing would set off some alarms, sounded terrible, but just hit that right pitch. __________________ Check out Alabama Camaros, for Camaro enthusiasts all around Alabama https://www.facebook.com/groups/1739...group_activity

11-09-2013, 09:13 AM	#5
RollaMo Drives: 2017 2SS Join Date: Mar 2012 Location: Rolla, MO Posts: 1,106	Sound waves create vibration. The louder the sound, the more vibration. I am sure you have seen speaker cones vibrate, and the louder you turn the music up the more they vibrate. Some (not all) car alarms have "motion" sensors. And in some cases the sensitivity to motion can be adjusted. Drive by one of those cars with stock quiet exhaust and nothing happens, but drive by with a loud exhaust system and there is the possibility of setting off the alarm. __________________ 1996 Corvette - LT4 2017 Camaro 2SS 2019 GMC Sierra 2500 HD 2015 Harley Davidson Ultra Limited

11-09-2013, 09:54 AM	#6
Goober Account Suspended Drives: Camaro Join Date: Dec 2012 Location: US Posts: 522	Yes. Some alarms are very sensitive. I remember years ago I lived in an apt complex and this kid had a Jeep with an alarm that if you just walked by it it would go off. A robot voice like Robocop would say "Step Away From The Car!" And then all these loud obnoxious police siren sounds would go off. This would happen all night long and it used to piss me off.

11-09-2013, 10:50 AM	#8
MrWray SYBIL Drives: 2013 2SS/RS, silver ice metallic Join Date: Oct 2012 Location: Oklahoma Posts: 1,444	I set off a few car alarms here and there. __________________

11-09-2013, 11:38 AM	#9
Twoblindsheep [COTW 1/6/14] Drives: 2017 1LE Join Date: Mar 2012 Location: Scott AFB/STL Posts: 2,004	yeah i do it all the time at the parking lot at work.. its always the trucks tho.. first time happened i thought i was my car since i just started it lol

11-09-2013, 12:53 PM	#10
RolltideSS Drives: 2018 SS 1LE Join Date: Mar 2013 Location: Houston Posts: 1,069 View My Garage	Yep, I can usually find 2 cars a day in the parking garage that go off when I go past - I know I'm not a mature adult because it makes me smile

11-09-2013, 01:03 PM	#11
Jenner Drives: 2012 SS/RS Join Date: Jul 2013 Location: Placentia, CA Posts: 2,130	Mine does too.. I really like doing it too. I try to avid it when it's really late

11-09-2013, 01:08 PM	#12
BottlefedSS Drives: 2010 SS Join Date: Jan 2012 Location: TX Posts: 18	Mine does it all the time. I set my co-workers truck alarm off once and I told him my car scared his truck. __________________ 2010 SS M6 ...sounds fast...

11-09-2013, 07:24 PM	#14
SS4PK Drives: 2010SS Join Date: Apr 2009 Location: VA Posts: 541 View My Garage	Mine does it in the parking garage. It sets off the glass breakage sensor. __________________ Her Hot Rod.