I started this thread during my troubleshooting of hesitation/stumbling problem. The hesitation problem was found to be bad spark plugs. I never had a spark plug failed on me until this time. The plugs look fine on the outside but after swapping them out for an old (but good) set, problem went away. Below is my original post:
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I searched. I even don't know the name of that part. It is the plastic U-shape duct connecting between the throttle body and the air-filter box. On the U-shape duct, there are one larger and one smaller vacuum hoses connecting to the mysterious box at the right side of the firewall close to the ignition coil.
The car idling and runs rough. Definitely like running on 3 cylinders. I heard hissing sound so I checked things around. Last time I checked the U-duct, it already had some fine cracks at the side connecting to the throttle body, but it didn't affect driverability. This time I pulled it off and the crack is a lot bigger. The big crack is located at the underside of the duct (when it is in the installed position) that's why I did not see it at the beginning.
I noticed the opening at the air filter box has a larger diameter. So without going to the junkyard, what are my repair options ? I'm leaning towards using stretchable electrical tape. Anyone had the same problem ?
Thanks,
- AC
pics attached
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