mpbone

t
own 2017 stingray coupe, stock engine , 7 speed tranny, question: at 5k miles vet started to vibrate at idle, 600rpm, dealer suggested forum,service said it is-normal. i use 93 octane and not sure why at idle the vibration shakes car, is this normal? and the gas gauge always" fuel used" is ALWAYS one gallon less than when i fill it up
Please advise
martin brown

lakemg

Mine shakes at idle and is normal. The thing is, mine has done it since new, yet your post sounds as if yours just started doing it. So did it really just start doing it or has it been doing it all along and you just never noticed?

mpbone

good question, not really sure when started but most likely just noticed, service rep locked under hood both engine sides and under body, said normal but never in car when idle to c vibration, so ???

Gil225

My 2018 a8 doesn't vibrate, but it may be auto v/s stick. Gas gauge
is always one gallon less used than when it gets filled up. Just turned 4K miles, my 10, 13 & 16 were always spot on with the gallons used, figure
it is just a computer glitch.

Rebel Yell

Mine does not vibrate per se, but it will shake a bit from time to time. Normal operation for these larger engines. However, I'm not sure if we are experiencing the same thing when you say "vibrates". Welcome to the forum, and good luck. I hope it's nothing serious.

Kracka

It's intentionally tuned that way (low idle) to give these engines character (they are American V8's after all). If you don't like it you can turn the idle up higher with an aftermarket tuner such as a Diablo InTune to smooth things out.

walleyejack

My 16 doesn t vibrate, but it shakes a little when i power it in to 2nd then into 3rd. i think this is normal

vbdenny

I noticed right away the raspy idle but knowing that higher performance cars typically display this my concern was minimal. Idles rougher than my previous Lexus and I like it!

Avanti

Sounds normal to me. Welcome aboard!

Grand Slam

Normal for the idle to be a little rough. I was warned when I picked up my car.

LIStingray

Actually it is done that way to save fuel - lower idle speed = greater fuel economy. The C7 (M7) idles at 600 rpm, my Jeep GC (auto) idles at 500 rpm.