clifford rsx3.3 engine on false alarms

The Clifford RSX 3.3 or 3.3x responder will automatically disable the shock sensor when remote started.  There's no programming feature to turn on the shock sensor or disable the shock sensor manually.  You can however, disable the shock sensor when you arm the alarm, but you don't have to with the remote start. 

When the 'alarm' goes off, is it the alarm siren sounding or the car's horn honking?

If the alarm siren is sounding when you remote start, then you have a bad unit, or the instant trigger (blue wire, harness H1, pin 7) is connected to something it's not supposed to be.  The shock sensor for the Clifford RSX3.3 is onboard so you can't wire around it.

If the car's horn is sounding, then the factory alarm is being triggered during remote start.  The factory disarm output must be connected to the vehicle.  Light GREEN/ black H2 harness pin 1, to light green wire in Purple plug of BCM pin 6.

When the alarm goes off it is the RSX 3.3 alarm.  I played back the long term event history and the last three events show zone 3 (door trigger), zone 3 (door trigger), and zone 2 (shock sensor).  The last three times that the alarm sounded was when I used the remote start (twice), and then when my wife started her GTO in the morning the engine vibrations set off the shock sensor (even though installer said he put it on the least sensitive setting).  So if the long term event history is correct, it seems like there is something hooked up wrong with the door trigger and, even if that were correct, the built in shock sensor is too touchy.  I also have the optional interior motion radar sensor but I don't see any zone number for that in the history table in the manual.  Maybe the motion sensor was triggered during remote start but it just doesn't show up in the event history?  I am starting to miss my ancient AvantGuard a little.

The motion sensor will show up in the event history but you'll need to know which trigger it is installed on.  However, if the shock sensor is setting the alarm off, then it is without a doubt defective.

You can adjust the sensitivity of the shock sensor using your remote.  I love these units because when you get into the shock sensor setting, the remote shows you how sensitive the shock sensor is, by the lights on the remote.

The sensitivity is set wrong.  The 508d is very difficult to set the sensitivity and have it work reliably.  When it's set correctly, it works awesome, but when it's set wrong it causes nothing but headaches.  If it's set to the door trigger then you will not get the warn away.  The 508d has to be installed like a dual-stage shock sensor.  If it's connected in parrallel of the shock sensor, which it should, then it will disarm during remote start and give you both zones.  However, on the 3.3 the shock sensor is built in, so it has to be connected to the mux sensor port on the 3.3 brain.  If done so, then it will be disabled during remote start and will give you both zones, and your falsing problem goes away.

lol.  I do have deja vu' a lot so maybe I'm clairvoyant?  

...or I could be from the department of homeland security and watching your every move.  Btw, good morning, your toast popped....

Thanks Megaman!  Now it all makes sense, that's why the outer zone triggers the alarm when the engine is running.

Before this I had the Clifford AvantGuard with the DSP based dual zone radar proximity sensor and it worked so nicely, I had zero false alarms.  I am wondering about the capabilities of the 508D vs. the Clifford digital dual zone proximity sensor.  Does the "real" Clifford sensor filter out false motion better because it is DSP based?

Also wondering about the Matrix 3.3 shock sensor.  Right now I have it completely disabled, because when it was set to level 2 my wife's car made the alarm sound just because she was starting her engine in the morning.  The zone histroy showed this was because of the shock sensor.  I never had good results with shock sensors in the past, this one included.  So I just disable them and use radar only.