Thread: engine rattle

My 98 GTP has a bad engine rattle when i turn the car on the engine rattles & if i am sitting in the car & i put it in drive it gets worse also when under the hood while the engine is running it sounds like the coupler is bad but i still dont think that would make the engine rattle like is has been doing , i am going to check engine mounts , but i am just wondering if maybe it is the harmonic balancer , what would i look for to find out if this is the problem?

Need more information.

Where is the noise coming from?

Can we have a video?

Well I am not 100 % on where it is coming from but i seems to be around the supercharger tentioner , but its not the tentioner , I may be able to get a video but ill have to borrow a camera , I dont know it may be a vac line problem or even an A/C problem , theres so many things it could be , also my engine light comes on and stays on when the engine is running but when i accelerate the light flashes & it feels like a missfire while its driving , i bought new plugs & wires im going to put them on either tomorrow or the day after.

so its the coupling , me & a friend of mine figured it all out i just replaced my fuel pump i wasnt getting enough fuel to the engine & it was causing it to missfire & thats why i couldent diagnose if it was the coupling