2008 Lincoln MKZ Repair Question
when was the last tuneup?
maybe your brake booster is leaking?
also look for other vacuum leaks.
I just got the car in December. I took the car last month for the vehicle health report sent to my phone from sync,said it was time to take the car to the dealership. I told the Tech to perform what needed to be done. He only changed the oil and rotated the tires. Maybe with me being a female, I need to be more specific.
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anything else i can help with?