stangc83

I have an 04 GT. Now when i start to drive and then i put the car back into Neutral at a light the car tends to have a vibration. Now when i turn on the AC the vibrations gets a lot worse. I am thinking that maybe its a pullie. Now is it all the pullies or maybe just one. I do not have underdrive pullies on it, and if it is the pullies and i buy underdrive pullies will they fix it or do you think that its the crankshaft pullie. If you have had this problem or know any experience with this =...please let me kow. Thank you.

1998Slow 'Stang

These motors do have a bit of a natural "shake" to them....

However, I know how you feel...sorta; mine does the exact opposite. A/C on in neutral at a light and its smooth as glass...turn the A/C off and bam, here comes the vibration. Funny how these cars do things like this.

stangc83

well i have owned this car since it had 15K miles. And it never had a shake until recently. So its not the mormal shake that im use to...its very exaggerated. Like it actually rattles the panels in the car.

1998Slow 'Stang

Have you inspected your COP boots/wiring/plug wells in the head for water recently?
The only time mine has EVER shook that bad is when I had a melted boot on one of my plug wires. I by no means claim to be an expert, just trying to help you brainstorm some ideas that wont cost anything. Good luck with the shakes.

ESIGALA

I would check to see if any of the pulleys are loose. Also check and see if the tensioner is still good.