[Steveng93]

on my 05 gt, whenever i give it a decent ammount of gas, but NOT flooring it, i hear like a knocking/wrattleing sound, coming from the front of the car. no its not like interior wrattle. my dad said sometimes with big engines you get that wrattleing noise, but i do not know.

any ideas of what it could be?

[travelers]

There are a few things that may do that. I would look at the swaybar links to start with and just look at the suspension and anything that could be loose under the hood. Its hard to say.

[pcfrisch]

Does the car have to be moving when you hear this rattle?

[stlwagon]

If you're getting spark knock you'd better have that looked at.

[sqidd]

Originally Posted by Steveng93

any ideas of what it could be?

Something is loose, get under the hood/car and wiggle everythig with your hands. If it's loose tighten it down.

[jaja6009]

Does it do it only when cold and stop when warmed up? And does it do it only when moving? Im thinking the transmission dust shield.

[jakeGT08]

my car has the same problem. i have a 93 tune from brenspeed. could that cause something like that? how do i test for the spark problem stl?

[ski]

Try the following to eliminate pinging/spark knock:
- Use a different brand of gas.
- Dump a can of Seafoam into the gas tank right before filling up.
- Pull timing with your tuner in the rpm range where it occurs.
- Have the supplier adjust your tune.
- Use a lower octane tune with higher octane gas.