I replaced teh blower motor speed control module and now the check engine light is on. Was not on prior. I don't think it is anythingserious, any thoughts?


Asked by Jan 15, 2015 at 09:08 AM about the 2001 Mercury Grand Marquis LS

Question type: Maintenance & Repair

3 Answers


run some diagnostic codes to see what's going on. Some auto stores do it for free


I did that it keep reading cenlender 4 i change the plugs and wires


I had to replace the wires on my '93, newer models have igniters. Do what it says.

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