Systemreset

I just replace my headers with JBA headers and now my vibrates when I stop at a light or stop sign. the rpm some times drop to 500. I have 2001 v6 mustang. it has 93000miles on it. I also replace the fuel filter today so it isnt that. Could it be the O2 Sensors or something else?

Xemeth

What vibrates? The whole thing? A certain part?

Systemreset

Well when the car is in park or neutral. it doesnt vibrate but when it is drive and i stop somewhere it vibrates.

Flake6899

For some reason I think I had the same problem as you and it had somethin to do with my sparkplugs.

Systemreset

Well when we replace my headers, we found out that my wires where in the wrong place and i have been missfiring for about 9 months. do you think the plugs are bad. two wires were in the wrong place. LOL

l_shizzle_l

I would definitely change your plugs.

Derf00

Does your car feel like it's missing at idle? When you're in park, get out of your car and walk to the tailpipe. Does it sputter? Sputtering is a miss.

If it sputters under acceleration too then it could be a bad plug, bad wire, or perhaps you have a wire touching a header tube and it burned through the plug boot.

Pelley_Pony

Had the exact same prob, Car shook when your in park. Felt like a bad miss. Bought a set of 9MM spark plug wires and NGK Iriduim plugs hopefully to fix the problem

Systemreset

The talepipe shakes a little but when it is in park or neutal, it is fine. Could the O2 sensor cause it? I have 93000 miles on it and it is time for them to be replace. what do you guys think?

Systemreset

O another thing, it seems that water or something liquid comes out of the tailpipe and some times black stuff like sut comes out