ford ranger prostart

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=115887
Printed Date: July 12, 2025 at 6:35 AM

Topic: ford ranger prostart

Posted By: maxximus13
Subject: ford ranger prostart
Date Posted: August 24, 2009 at 8:40 PM

I'm installing a Prostart CT-3371 in a 1990 Ford Ranger 2.9L Manual Trans. I'm having an issue with the tach signal. I was going to take the signal from the coil but the voltage is too high (28-32 VAC). I then decided to take the signal from the injector, again the same voltage. I'm a bit confused by this. Would someone be able to clarify what the issue is here? Thanks

Replies:

Posted By: t&t tech
Date Posted: August 24, 2009 at 9:07 PM

It should be any of the uncommon wires at any one of the injectors! Also just a side thought are you sure that specific vehicle is fuel injected!

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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF. PSALMS 37:5

Posted By: maxximus13
Date Posted: August 25, 2009 at 7:37 AM

yes the truck is fuel injected (EFI), but what voltage should I be reading at the injector? Because it is the same at the coil.
thanks

Posted By: KarTuneMan
Date Posted: August 25, 2009 at 8:38 AM

Tach

Dark GREEN/ YELLOW

Coil

from the 12volt's very own search!

Posted By: maxximus13
Date Posted: August 25, 2009 at 1:36 PM

Yes I know which wire it is. What I want to know is why is the voltage reading there so high? The injector wires are red & white or tan, and the voltage there is too high also.

Posted By: t&t tech
Date Posted: August 25, 2009 at 8:57 PM

maxximus13 wrote:

Yes I know which wire it is. What I want to know is why is the voltage reading there so high? The injector wires are red & white or tan, and the voltage there is too high also.

The answer is simple! You have the wrong wire! At all the injectors there should be a wire that is odd, this would be your wire. Also why i asked if you were sure about it being fuel injected, is because locally, our ford rangers come stock with diesel engines!

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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF. PSALMS 37:5