RS Problems, 2000 Alero, 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=84049
Printed Date: May 21, 2024 at 2:55 PM

Topic: RS Problems, 2000 Alero, tach

Posted By: nikuk
Subject: RS Problems, 2000 Alero, tach
Date Posted: October 12, 2006 at 1:19 PM

Good afternoon folks...

Having some problems with the wife's car - I installed a new 1W900FM-s into her car. This is a base model Alero 4dr (pwr locks) - in other words: NO Passlock / alarm. As a matter of fact, I've been using generic (hardware store) key copies for the last 3 years.

Install went fine (i've done 8 RS now, and 1 other Compustar), except for the tach wire - The white wire that should be tach wire doesnt read properly on my Fluke. On vAC, this lead doesnt alternate with RPMs.

I went to the ign coil itself, took a lead from there, and the RS would work. However, at this point it would only start the car, and then stall out very shortly after (engine would start, rev to 1200rpm as normal, but on the way down it would stall).

I reset the brain (disconnected for 30 seconds), reset teh "tach learn", and tried again. At this point, the unit would not even ATTEMPT to start the car (no pk lights or relays would activate). Although the remote would still work the power locks.

I'm aweful confused... I JUST installed another new 1w900fm-s in My 99 ranger 3 DAYS ago, and thats perfect. Possible that I rec'd a bad unit?

Thanks, as always,

Nick

Replies:

Posted By: Fastlearner
Date Posted: October 12, 2006 at 1:26 PM

You're car actually has a passlock 2 security system. You need to go and pickup a bypass module.

Posted By: sparkie
Date Posted: October 12, 2006 at 7:30 PM

Fastlearner is correct. The white wire at the ignition module is the tach wire, but the problem is you haven't interfaced with the Passlock II system. It has nothing to do with your key. The circuits for it are contained inside your ignition cylinder.

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sparky

Posted By: Velocity Motors
Date Posted: October 12, 2006 at 9:09 PM

Your first problem is what the other member's just said about the Passlock. The resistor is built into the ignition, not the key itself ( NOT RF transmitted ). Next , you can find the tach wire ( PURPLE / WHITE ) in the large loom of wires exiting into the engine compartment under the driver's side above the kick panel. There will be two other PURPLE / WHITE wires there, just use the meter and you will find the right one.

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