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The hell did the dealership do?
I took my FR-S into the local Toyota dealership for a 27k service (the last service on my ToyotaCare deal). Just wanted an oil change and a fluid check before the big 30k comes around. They also suggested a mass air sensor cleaning (?) and a de-carboning of the engine intake area (hmm...)
They also suggested a brake fluid flushing which I turned down, since I was going to install braided brake lines soon in the future.
When I got the car back, everything seemed okay. While I was driving, I noticed that when I came to a stop, if I pushed in the clutch with the shifter still in gear, the engine would slowly rev up to 2000 rpm, then slowly reduce to idle at 500. If I pushed the clutch in and put the shifter in neutral, the revs would simply go to idle without the odd climbing.
At first I thought it was something to do with the mass air sensor cleaning, but now I'm thinking they did some kind of software update to combat the famous "low idle" issue these 2013 models had. There's nothing in the receipt about a software update but maybe it was a Service Bulletin kind of thing. It almost seems like some kind of "rev match" feature.
I'm going to call the dealership to ask what the deal is, but I thought I'd ask here first. Any info would help.
Needless to say that's my last trip to the dealership for service, now that the ToyotaCare deal is over.
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