Low tach in a Mazda RX8 with Ultrastart

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=85488
Printed Date: May 12, 2024 at 8:58 AM

Topic: Low tach in a Mazda RX8 with Ultrastart

Posted By: concepts99
Subject: Low tach in a Mazda RX8 with Ultrastart
Date Posted: November 11, 2006 at 5:36 PM

Hello all,

I just am working on a 2004 Mazda Rx8, I am finished with the install, doing a remote start. Using an Ultrastart 4256. I need a tach reference for this remote start. I am having a heck of a time getting it to program. I tried all 4 non black wires off the coils (one on each coil) and cannot get a reference to program. The ultrastart has a LED in the antenna, when it gets a good tach, it turns solid. It starts to flicker as I rev the engine and about 4000 rpm, it becomes a solid reference. However, I cant program this car with a 4000 rpm. The idle RPM signal is just too low for the Ultrastart to pick up. I am VERY frustrated as DEI units have an extra switch for this, but I had to use this Ultrastarter because it is a manual tranmission remote start and it is a manual.

Does anyone have any advice? How can I boost the signal on the tach? What do you think about that DEI unit that works off the Alternator and feeds a tach?

Help

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Replies:

Posted By: lsondubz
Date Posted: November 11, 2006 at 5:41 PM

Can you just go directly to a fuel injector? Directechs lists;
Tachometer NOT blk/wht, blk, or wht/blue any ignition coil or fuel injector

Posted By: concepts99
Date Posted: November 11, 2006 at 5:54 PM

lsondubz wrote:

Can you just go directly to a fuel injector? Directechs lists;
Tachometer NOT blk/wht, blk, or wht/blue any ignition coil or fuel injector

I didnt see the fuel injector, rotary engine, could be in a hard to get area. I doubt the Ultrastart since it cant even see a low tach will read the injector.

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Posted By: xtremej
Date Posted: November 13, 2006 at 7:55 AM

It will read the injector but it does not perform well off of them. Trust me I've tried. Compustar can run off the generator lead and has a model that is manual safe. Have you tried running it tachless? If its a tl model I would give it a shot.

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