programming viper car alarm

does anyone know how i would be able to program a viper 791xv car alarm.  I have  a problem with my tac wire, or atleast one shop told me and they said it needs to be programmed to fix the problem.  The car turns over a few times but dosnt start, it just stops everything and goes silent, while holding the key it starts up again and runs.99 z28

press and hold the valet push switch within 5 seconds of starting the car with the key... the LED will come on solid to confirm tach learnedKevin Gerry

Certified Electronics Technician

MECP First Class Installer

Owner/Installer

Classic Car Audio

since 1979

heres a question, is the tac wire specific to remote starting?  Because i didnt hook they didn't hook that up because its a manual.99 z28

so umm yea, if the remote start IS NOT hooked up, you still will need the tach wire connected??99 z28

LOL well this is the thing i got the 791xv installed right w/o remote start"manual" and when they hooked up the ign section of it, the car didnt want to start up right away.  It would turn over a couple times then the starter would turn of and the car wouldnt run, while holding the key in the same possition"run" it would kick back on and start up finaly.  I talked to a shop over in my area"another shop" and they said that it was prob my tach needing to be programmed.  But i don't have remote start hooked up so why would i need that??99 z28

Im not sure what it could be cause the only times it happend was after i got off work it wouldnt start up right away.  It did the whole thing i was talking about.  But after i drove it around for about 20 min and turned it off and tried again.  I wouldn't have a problem.  Maybe a sticky relay what do you think??99 z28

oh yea when it happend the alarm wasnt set ither all night99 z28

99 z28 camaro, oh yea ive also seen posts about my car alarm needing a bypass.  because i got VATS "stock alarm"99 z28

yes i do, but i think i disabled it.  Did the whole turn key do this, do that, then that.  99 z28

i disabled the factory alarm threw removing the radio fuse then turning to ign, the hitting the door unlock button till i only herd 1 chime.  suposably thats suposed to disable the factory alarm.  Im just taking that alarm completly out of the picture.99 z28