compustar remote start, tach wire
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=106104
Printed Date: April 28, 2024 at 3:02 PM
Topic: compustar remote start, tach wire
Posted By: wseattleguy
Subject: compustar remote start, tach wire
Date Posted: July 13, 2008 at 6:32 PM
1991 Bmw 325ix 5spd
Compustar p2w9000
Having trouble with the remote start and I'm pretty sure it's the tach wire. I tapped into the tach wire at the speedo. It's the black wire coming out of the blue harness. Apparently the compustar doesn't like this wire because when I have it "learn" the tachometer signal, it gives an error. I'm sure I'm connected to the tach wire, but the compustar expects a tach wire that has increasing voltage as the rpm's increase. The voltage on this tach wire decreases as the rpm's increase.
Any suggestions?
Replies:
Posted By: gus1
Date Posted: July 13, 2008 at 7:34 PM
Go to an injector at the motor
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Wherever I go, that is where I end up......
Posted By: KarTuneMan
Date Posted: July 13, 2008 at 9:11 PM
Test a black wire at the diagnostic plug under the hood on the pass. side. It is also a black wire.
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Posted By: wseattleguy
Date Posted: July 14, 2008 at 1:17 AM
I'll give it a try. Thanks.
Posted By: dswift
Date Posted: July 14, 2008 at 6:39 PM
compustar has a revised software for these reasons. Check out the tech bulletins on compustar.com in dealer support.
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"dont ground out!"
Posted By: wseattleguy
Date Posted: July 17, 2008 at 11:07 AM
thanks dswift. Problem is, I installed myself and don't have the usb updater. guess i'll give them a call and see if they'll help me out.
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