Cold Weather = Alarm/wiring problems

Yeah, voltage at the alarm input sounds like a good place to start, like Chris and Craig said- monitor it during the remote start conditions and see if it holds up as expected.

My appologies.  I should have read the whole post.  I thought you had a GM for some reason.

How did you make your connections ? Solder & tape ?Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

dualsport, I did have a bad battery that i changed out with a Yellow Top Optima about a 1.5 months ago... Velocity Motors, I solder every connection i make since I got my EET degree 5 years ago, but this still has my stumped.

chris354 wrote: To me it sounds like a voltage issue. I know you are using tach sense but with some rs i have seen when the voltage gets to low they act wierd. That also could be why the siren sounds differant and it  happens worse the colder it gets.

What do you suggust to raise the V?   The batt. is new and it is always about 13.2V in the morning after sitting all night and about 13.8 after being ran for about an hour straight. Of course today is 44F so it's working fine and it is 13.2V again so i have no clue. Thanks again!

Try to ground your battery to the car with some larger wire.  I have one 0 gauge and one 4 gauge wire coming off of my neg terminal to the body chassis and I have no issue with starting in the most extreme cold.

isus wrote: Try to ground your battery to the car with some larger wire.  I have one 0 gauge and one 4 gauge wire coming off of my neg terminal to the body chassis and I have no issue with starting in the most extreme cold.

I actualy do have the batt. grounded directly to the body with 0awg.   And Starting is not a problem, it starts right up no problem.   It just dosent register with the alarm brain that it IS started.???

Just a thought- did you make sure your charging system is coming up during the remote start? May just want to monitor the voltage, and right at the module, during the remote start to make sure- if it's running solely off the battery during the remote start, it could drop out in cold weather. Depending on your particular setup, the power to the alternator circuit might be separate from the ignition, though it comes on together during a normal key start.

dualsport wrote: Just a thought- did you make sure your charging system is coming up during the remote start? May just want to monitor the voltage, and right at the module, during the remote start to make sure- if it's running solely off the battery during the remote start, it could drop out in cold weather. Depending on your particular setup, the power to the alternator circuit might be separate from the ignition, though it comes on together during a normal key start.

all i have are digital DMMs not analog so i'm not sure if it will read it quick enough, but i will try. Also, is there any way to boost the Tach signal going to the brain so it reads it better? Thanks again!

If it shows up as a slow and steady drop, the DMM should do- May as well try the easy stuff first before going into more elaborate things.