I got a 5th gen ex, lil over 100K miles. When my car is stopped, like at a red light, it idles really hard. Hard like vibrates my driver's side door. Was wondering what might be causing this, getting kinda annoying.

 

Try checking the oil/changing it...

Check spark plugs/wires...

 

you must have a really aggressive cam :chuckles: :af:

 

Maxboost: just had oil changed like 2-3 weekends ago along with filter, might look into some spark plugs and wires tho, thanks
:chuckles:

 

Sometimes your motor mount can be bad and that will cause the motor to shake . Just a thought .

 

Change your cap and rotor lately?

 

not in a while, about how much those cost to replace? not to sound noobish or anything but wat all do they affect? gas mileage, what?

 

Cap and rotor can really mess with the idle. Very cheap to replace but I would steer away from the pepboys/kragen/autozone branded ones - I got a set and had to replace it soon after with a Honda OEM cap and rotor.

I'm putting money on the fact that you have an aggresive race cam

 

*cough*ehemm*cough*

 

not to sound stupid but what does the whole agressive cam thing mean?