EZF output to LH
10-03-2002, 01:11 AM
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EZF output to LH
i am conviced that i have a problem with either the EZF or the LH computer. the car will only run when i jumper the LH relay; and then it runs too rich. the speed/mark sensor is providing a strong signal to the EZF. Based on the wiring diagram, it looks like the EZF needs to send a signal to the LH regarding engine speed in order for the LH to fire-up the LH relay and the fuel pump relay. Any ideas as to what this EZF to LH signal should look like?
10-03-2002, 02:42 PM
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Sterling, see the last post in the above Topic titled 'General Info for New (and not so new) 928 Owners' for instructions on posting images to the Forum.
10-03-2002, 07:37 PM
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I am sorry but I don't know what a tach signal looks like. Is it a sinewave (V-AC)? I want to measure it somehow (Htz, V-ac, V-dc) to see if it is fomulated properly for the LH computer. I have concluded that either that signal from the ignition comnputer is faulty (although the tach does show proper engine speed and the ignition system is working properly) or my LH computer must still be bad although it was just rebuilt. Help is appreciated.
