1990 Might Max No Ignition Spark

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1990 Might Max No Ignition Spark

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1990 Might Max No Ignition Spark - 7/3/2005 12:03:21 PM

Doc37683

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Joined: 7/3/2005
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I have a problem with my 1990 Mitsubishi Mighty Max 2WD 2.4L engine, 5 speed, truck. The engine will not start. There is no spark from the coil or at the plugs. I have a Haynes manual that gives test values for the coil and it tests good. I have looked at all the obvious and find nothing wrong, i.e. cap, rotor, loose, broke wires, etc.
I have been told the distributer contains an electronic unit, crank angle sensor as the manual calls it, within the coil is a common problem with this engine. My manual does not give any tests or test values for the distributer. Can anyone provide me test values for this unit? I assume it is an resistance test. Any comments concerning this problem are appreciated.
Doc

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RE: 1990 Might Max No Ignition Spark - 7/3/2005 6:41:24 PM

Posts: 156
Joined: 3/2/2005
Status: offline

I have a 92 Montero with a crank angle sensor (CAS) and a TDC sensor in the distributor cap. My manual states the CAS is powered from the engine control relay with 5V which produce pulse signals. My manual gives continuity tests from the four pin connector to the control relay harness connector. You'd need to know your wiring connections. The voltage test is for applied voltage from the CAS pin through a multimeter to ground with the CAS sensor connector disconnected and the ECU connected and the ignition switch on. Value 4.8 - 5.2V. It does state that if you get a 0 rpm reading, I'm assuming at the tach, during cranking and the engine won't start the fault may be the CAS or a broken timing belt. This is assuming the coils primary current is ok. Not sure if this helps.

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92 Montero - Owned since new - 118K

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