My engine light on my 2007 Mercury Mountaineer came on so I did a diagnosis and it said it was my spark plugs but I just had my spark plugs done they're brand-new
Evidently your diagnostic device is wrong .. Never seen one that actually said what the problem is .. I always had to retrieve the trouble codes then start the diagnosis & testing to find out exactly what set the code(s) ...
RepairPal Certified shops can diagnose and repair your 2007 Mercury Mountaineer. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.