tach sensitivity

Hi guys,

I don't know if there is a solution for this but I'll ask anyhow.

Since it has gotten colder, I have had 3 requests for help with their remote starters. I believe they are all the same problem. They have been trying to use their remotes but the engine will not start. The problem, I believe, is that as soon as the remote gets a tach signal, it shuts down the starter even though the engine has not started. It has fired once, but needs the starter to continue turning the engine over to get a true running signal (not just an occasional firing).

Is there a cure for this sensitity or should I tell them that the vehicle must be plugged in when the temp gets down to 20 degrees F or lower. It will also happen when it is warmer if the vehicle has not  been started for a few days.

Thanks, Roy

Merry x-mas Jeff and all others,

Some remotes have an option to use a voltage signal instead of the tach signal. One installer says that this is a better way to overcome the symptoms I have described above.

Any opinions on that ???

Thanks, Roy

You can use the alternator sense wire ( opposed to the tach wire ) and it will do the same as the tach wire except not AC. If your system has a tachless mode ( I don't like these but use it if it works ) then use the tachless mode instead.

MERRY CHRISTMAS to you too Roy !!

Jeff

Why not AC ?

AC should not come on immedietly and the system only asks for at least (or about) 1/2volt more than bat voltage to determine that the engine is running.

Roy

Jeff,

Quote "Can you increase the starter crank time to about ¾ seconds or maybe even 1 second ?"

By that ,do you mean that the crank time will go that far longer than the 1st tach signal recieved by the unit?

On 2 of these I have the crank time set at 12 seconds but the starter cuts out as soon as it fires once. I would like it to crank until the engine is running for sure (a steady tach signal) if you know what I mean.

Roy

No I haven't tried that , Jeff.

On the viper system, if you choose to use voltage sensing, you just program it and don't hook up the tach wire to anything.

Roy