no check engine light on lincoln mark 7

Ge Vale

Asked by Feb 07, 2014 at 09:43 PM about the 1987 Lincoln Mark VII Bill Blass

Question type: Maintenance & Repair

5 Answers


Bad check engine light bulb, poor connection for check engine lamp, ECM failure, just a few things to check.

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Ge Vale

changed bulbs still not working. but wen i pulled off the connector and tested the pin whit a multimeter it dint read 12v it reads1.1v

Tom Demyan

Just FYI, Did you find a bulb in the socket in the gauge cluster? Some Fords in this era didn't come with a CEL light until 1989 even though there was a provision for it. It wasn't wired directly to the PCM.


Check all the fuses. If this came equipped with bulb there is a fuse for it.


GE, All Lincoln Mark VIIs left the factory with a CHECK ENGINE socket and bulb. (Certain Fords and Mercurys are were you really gotta consult the shop manual) Your issue is IGNITION SWITCH related. Until you replace it, any tests you perform could give you false results. See

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