Alarm & Prelude = Problem

**LUD02C** · 02-01-2004 03:08 PM

The other week i got an alarm put in the Prelude...
It has keyless entry and a kill switch and 3 immobilisers and all the other crap!

Problem is here!

I was at work, got out of the car and clicked the alarm button alarm goes on!
2 minutes later my alarm is going off...
I thought a car must of set it off, then at a friends house same thing happened and i soon realized this...

Genration 3 Preludes have a cooling fan when the engine is off, it usually comes on straight after you turn the engine off, but on the odd occation it comes on maybe 2 minutes after you turn the car off...

So what is happening?

When i turn my car off and the fan is on and i put the alarm on there is no problem, but when i turn car off and put alarm on then the fan comes on guess what goes off the ALARM!!! :twisted:

So now, if i've been driving and it doesn't come on straight away (the fan) i lock the doors with my key and the alarm will go on 5-10 minutes after i lock the doors (only solution we could come up with)

If you have a 3rd Gen and thinking about an alarm i highly recommend you don't bother!

Jason

**A'PEXi** · 02-01-2004 03:50 PM

uhh is there a sensor or something sensing movement in your engine (the fan) when the alarm is armed?...

**n/a** · 02-01-2004 11:52 PM

my brother had a gen3, no real problem with alarm system.

could be the system? what is it? maybe dodgey fitting?

i'm not pointing fingers!

**luzinit** · 02-01-2004 11:54 PM

or maybe u could turn the sensitivity down
if ur fan will make it go off, maybe even exhaust of other cars will set it off, surely u dun want that do ya..

**euro77** · 03-01-2004 09:31 AM

I'm guessing your alarm has impact sensor to detect vibration? if yes, then maybe it's too sensitive. You can turn down the sensitivity.

**Rowie** · 03-01-2004 09:33 AM

yes, turn it down..... you dont want loud cars hooning past and your alarm goiing crazy. That anoys tha shit outa me :?

**LUD02C** · 03-01-2004 10:11 AM

How do i turn it down?

Jason

**Rowie** · 03-01-2004 10:26 AM

Refeer to the alarm manual i would guess ??? Or ring the people that installed it, or did you do it yourself?

**94vtirozguy** · 03-01-2004 02:41 PM

it would be the current sensing ability of the alarm, once the alarm is armed then it monitors the current, when the fan comes on it draws current so the alarm goes off

**integra97** · 03-01-2004 05:09 PM

94vtirozguy has got it right. I have the same problem with my turbo timer and my alarm. If my fan is running before the alarm is set the alarm wont go off but if the alarm is set then the fan starts up the alarms goes off.
Due to a change in current being drawn

**poid** · 03-01-2004 05:49 PM

it shouldnt go off with such a low change in current though...the alarm in my bro's gen3 lude only went off with current when the batt was basically dead.

No such issues with the alarm, i also suggest trying to turn any shock/microwave sensor sensitivity down as a first port of call