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    viper 791xv remote start

    i have a viper 791xv remote start alarm everything is installed and it works fine its just when its cold out it doesnt start up on the first try sometimes its take till the 4th. where is the crank adjustment and how to i adjust it?







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    Re: viper 791xv remote start

    Quote Originally Posted by WC 206 View Post
    i have a viper 791xv remote start alarm everything is installed and it works fine its just when its cold out it doesnt start up on the first try sometimes its take till the 4th. where is the crank adjustment and how to i adjust it?
    id also clean the battery terminals really good. mine was acting weird and i did this and fixed everything



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    Re: viper 791xv remote start

    Did you hook up the Tach wire? or are you tying to use the voltage option? areas where th temp goes low causes eratic behavior in voltage mode. There is a Cranktime option in the menus but if you have tach connected you usually don't need it.



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    Re: viper 791xv remote start

    Quote Originally Posted by 919motoring View Post
    Did you hook up the Tach wire? or are you tying to use the voltage option? areas where th temp goes low causes eratic behavior in voltage mode. There is a Cranktime option in the menus but if you have tach connected you usually don't need it.
    That's not true. Voltage tach is "supposed" (key word here) to crank less in the summer and increase crank in the winter.

    Easiest way to adjust the crank time is with a bitwriter. Read the manual, tho, and it shouldl you how to do it by counting flashing led's...



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    Re: viper 791xv remote start

    I was gonna say sounds like its on voltage mode.



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    Re: viper 791xv remote start

    It's probably in virtual tach mode (voltage) and thats why its not wanting to start properly. You could tag the tach wire and it will start correctly then, however i wouldnt do this in some vehicles because it can effect the vehicles electrical system.

    Sometimes it's best to leave well enough alone.




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    Re: viper 791xv remote start

    791 does not come with virtual tach, this alarm is almost 5 years old now

    you need to adjust the crank time, or run a tach wire. Find someone with a bitwriter, or read the manual



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