I have a 97 Max (auto GLE with 40,000 mi) that recently seems a little sluggish at low speeds, on the highway it seems much more noticeable (60-85mph). Also I noticed the engine idles a little louder, almost sounds like a light rattle. The service engine light has not come on.
I'm not sure if these 2 issues are related, the only thing that's changed is that its much colder here in Michigan. I bought the car in Oklahoma where its spent its entire life until the past 3 months. Not sure if this matters, but I only use 93 octane gas in it, and try to avoid the oxygenated stuff. I might be able to borrow a OBDII scanner, could this help indicate the source of the problem?
thanks in advance
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