fm and tach

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=2755
Printed Date: July 20, 2025 at 7:50 AM

Topic: fm and tach

Posted By: asiaadad
Subject: fm and tach
Date Posted: August 13, 2002 at 1:34 PM

can somebody tell me what is going on.....i have a 99 gmc denali and i just installed the fm alarm with remote start but after the engine starts the starter stays engaged...i have hooked up the tach wire from the alarm to the white wire on the coil and even gone to the black plug label white and connected it there.....but it still does this...i have the 555l connected to bypass passII and using the ORANGE / black wire for ground ref and and yellow is cut and wiried correctly,,,can someone help?????

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mike holbrook

Replies:

Posted By: Big Dog
Date Posted: August 13, 2002 at 2:12 PM

Hey asiaadad,

You definitely have a tach learning problem even though you're on the correct wire but it has nothing to do with the passlock. Does your remote starter have the possibility to manually program the tach? Can you program it for no tach sensing and go with a 1.5 second crank or thereabouts?

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Prepare your future. It wasn't the lack of stones that killed the stone age.

Posted By: Velocity Motors
Date Posted: August 14, 2002 at 12:43 AM

Big Dog is right it sounds like a programming issue. The wire is correct and if everything checks out, what you can do is go straight to an injector and use the uncommon wire for a tach wire. Go through the programming again after you installthis wire and see if it work.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA