tach learning
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=119223
Printed Date: May 10, 2025 at 5:25 PM
Topic: tach learning
Posted By: howie ll
Subject: tach learning
Date Posted: January 10, 2010 at 3:18 AM
I've noticed a few posts recently on vehicles running for 5-15 secs. then cutting out after installing a remote start.
There is one simple answer to this.
TACH hasn't been recognised!
Either by a bad or non-existent connection or not properly programmed (learned).
Even on those units that give you a choice of voltage or tach, use tach because it's more accurate.
Two points to remember:-
a)If it starts and runs for any length of time, you've wired the R/S inc. by-pass correctly.
b) Let the engine warm up running for a few minutes before programming the tach.
Replies:
Posted By: Mike M2
Date Posted: January 10, 2010 at 8:05 AM
We have had an issue sometimes in the winter with Toyota products not starting correctly. It seems Toyotas like to idle very high when cold(i had one Thursday that idled at 2200rpms) and the RS will think it's over reving and shut off. To fix this we simply hold the rpms a little higher while learning tach....
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Mike M2
Tech Manager
CS Dealer Services
Posted By: howie ll
Date Posted: January 10, 2010 at 10:28 AM
Your right, I couldn't remember to either let the idle settle down or increase idling speed!
Have you sorted that BMW yet?
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