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  1. Trouble codes?

    My 91 ranger with the 2.3l dual plug ignition system is giving me two codes. 18-Tach signal erratic (my tach reads way lower than it should), and 88-IDM, DPI, or spout circuit fault. Im assuming code 88 is causing code 18 because the tach gets it signal from the IDM wire on the DIS module. Since...
  2. Tach problems on 91 2.3l ranger

    Hey everyone. I'm new to this forum, but I have been using this site for a while now and I find it extremely helpful. I can usually find an answer to my problem, but I wasn't so lucky this time. The tach on my 91 ranger (with the 2.3l dual plug system) hasn't worked right since i bought the...

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