armyvet8492

i got the stang about 2 month ago and the first thing i did was plugs,wires, and oil.the tires are new and balanced.now when i'm crusing 35-45 steady there's a shutter or some kind of vibration. feels like in the moter,not sure. i havent changed the fuel filter yet and i only run 93 oct in it. could this just be a dirty fuel filter? when i'm cruising like highway speeds it doesnt do it. any ideas?...thanks icon_patriot:

armyvet8492

can anyone a least give me some ideas?...thanks

Derf00

Do you feel the shutter in your butt or your hands?

armyvet8492

its not in the steering, feels like engin. only at low rmps if i get on it it seems to clear up. it seems like after it gets warmed up it wont really do it until it sits for awhile..thanks

Shaunmac9128

Well just a heads up, off topic, I believe our cars are tuned for 87 from the factory so on a stock tune you should be fine with 87 to save a few bucks, or 89 if you want.

neo8222

re: off topic.. there no point in using cheap gas in your car. sure 87 may be cheaper now but it burns dirtier, gets lower economy, and is generally worse for the engine. 93 or 91 in some places burns stronger, and cleaner so you get more power, better MPG's, and helps the engine last longer so might as well run 93 anyways.

Shaunmac9128

Eh, certain cars run best on a certain octane. While 93 might burn cleaner than 87 or 89 he might get the best gas mileage for the money on 89. I run 93 in my father car but its an 08 G35 lol I run 87 in mine, thats what my tune is for.

armyvet8492

ok i thank you for the fuel info but do u think that has anything to due with the vibration? should i run a hotter plug. i just put in a stock plug when i changed them.thanks again for the help

JKs95stang

Have you checked the motor mounts? Or it may be time for a coil pack.

Shaunmac9128

armyvet, where did you get your jlt cai? I didn't know they made one for our cars.