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This is crazy...One of those grand problems I have to beat!

Car: 2006 Ford Focus Wagon (ZXW) 2.0 Auto
Problem: Intense vibration when car is idling. This occurs both in park and when sitting at a light in drive

Severity: Things fall of dash, mirrors shake and are hard to see with, noise drives wife crazy!

Easy you say? So did I. Of course only a few things could cause such a problem...Do read on...

OK - I know this sort of vibration on it's own is not that uncommon, and normally not tough to repair....But this is a real gremlin at work.

First thought was that it could be a cracked engine mount since they are notoriously bad on these cars. I replaced **ALL THREE**. While the top-left mount was severely cracked on inspection, replacement of all the mounts did not get rid of my shake-rattle-and-roll.

Then thought it might be transmission related. Took it to the shop as I didn't feel like wearing transmission oil that day - Did a full transmission service. Full oil flush and transmission filter. Shifts great now. Smooth transitions, no slip. Really nice...Still rumbles like crazy when idling.

In pain from all this I sought outside advice. Spark plug misfiring they said... "Must be". I changed all the plugs and wires. (used the high end stuff too). Fires great....Still vibrates like crazy.

Vein in my temple throbbing - I take it to have it hooked up to a diagnostic computer. (Buddy is a mechanic for a large corporate fleet) Printed a full report. Only one fault code noted. Bad Output Speed Sensor on the transmission. No problem. Easy to fix...replaced it (twice - first time the Ford dealer gave me the wrong one and I had to go back). Now the transmission's output speed is being sensed quite well....The shake is STILL THERE!

I also asked my buddy here if timing was a possibility. Apparently not...

Does anyone have any other ideas as to how I might frustrate myself further or maybe even find the cause of this?

I hope someone can help because the only other possible fix that I can think of right now involves a bucket of gasoline and a match.

TO_Joe