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Looks like I am an addition to the list, even tho my situation is not quite the same as most.
I purchased my manual FRS locally (Northern Los Angeles Area) about 3 1/2 weeks ago. After a week of owning the car and daily driving, I was sitting in my driveway letting the engine warm up. I noticed my idle RPM was at 1200, after about two minutes, it roughly dropped, as in it went down, up and down, and so forth, until it got to 650 RPM, it sits there and I start hearing the infamous "crickets".
This made me very sad, even tho Im not getting any warning lights on my dash I made an appointment and took it in to the dealership about a week later. They had my car for about the whole day, and after inspection, they said the lead mechanic there was gonna speak to me to clear up my concerns. He said he had driven the car around for a little, and noticed nothing wrong with how my engine was running. He says at start up the engine will sit at a higher RPM to warm up the engine quicker, once the ECU realizes the car has been at an idle for a bit of time, it will shut off some of the direct injectors, which drops the RPM to 650. He says this is the correct idle RPM for this vehicle. I asked about the cricket noise and he told me that my car came with the update with the ECU to fix the issue this thread is dealing with, and that the noise im hearing is "pressure being released from the direct injection system and that is completely normal".
I felt very uneasy about his response but I decided to take trust in his information. Its been another two weeks, and Ive noticed that sometimes at start, It will idle at 1600 RPM, slooooowwllyyyyy drop to 1200, and then slowly, and roughly drop all the way back to 650 and the crickets start once again and last as long as the vehicle is on. Also while sitting in my drive way, or just on the street at a red light in neutral, I feel the vehicle shake very slightly, which coincides with a slight quick dip in my RPMs. The engine also just sounds very unhealthy at that low RPM, maybe its just my situation but it sounds like its chugging along to stay alive, its not smooth or attractive sounding at all, it sounds great at 1200 when I first start it, but after two minutes of the car being on and until I get to my destination, my car doesnt sound very good, with the exception of me being at speed. Also when cruising to a stop in 2nd gear, it starts to jerk once its below 3k RPM.
Im wondering if anyone can tell me any more information about my situation and how I should handle it especially since I havent had one light go off on my dash. How should I deal with the dealership since the lead mechanic strongly insisted nothing is wrong withy my vehicle as well? I really want answers and they're just kinda telling me everything is ok.
Sorry for the long post but id appreciate any information or advice, I love my car and how fun it is, but im kinda embarrassed at stop lights, or anytime im in neutral, sounds like im riding a a 20 year old lawn mower.
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