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?
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.
Looking for a Used Grand Marquis in your area?
CarGurus has 1,817 nationwide Grand Marquis listings starting at $2,250.
Search Mercury Grand Marquis Questions
Mercury Grand Marquis Experts
Related Models For Sale