The rough running could be a vacuum issue.  You may not have gotten all the vacuum lines reconnected correctly when you swapped out the light switch or inadvertently dislodged a different line during the take-apart or put-back-together phase of that project.

When I removed the switch I replaced the new one in opposite order.   The switch worked and the "air rushing" noise went away.  Could I have disrupted something else under the dash.  All the other vacuum lines seemed to be intact.  Also I did raise the left back end and tried to spin the wheel and tried to shake it side to side thinking I had a bad bearing. 

Whew...... I wish I had some idea as to your problem but it is interesting that it all started when the dealer worked on the front end.  Of course, I'm not insinuating that the dealer screwed anything up, I learned long ago that they dont do that, yeah right.  The clicking sound from the engine sounds ominous but I wonder if the dealers tech. could have pulled any vacuum lines loose in the front (vacuum can, relays, etc) while they were working on the front end.

Yeah, I hate to point the finger, BUT it is very coincidental.  Would the vacuum line breach from filter to the manifold cause a rough idle?  I am also worried about the click/knock.  Last time I heard something similar it was a rear main going bad in a Jeep.  However, that would not cause the rough idle.

[QUOTE=petdoc21] ... Would the vacuum line breach from filter to the manifold cause a rough idle?  ... [/QUOTE]

Thanks.  I have a shop manual.  I guess I can try tracing them all.

If the engine is shaking that bad, it has to be a really big vacuum leak...one that would be easy to hear/locate.
And yes, believe it or not, the problem most likely originated at the dealership. Chances are, the "tech" "had" to drive the car to verify the alignment. And...he "had" to see how hard it would run at full throttle.
I'd be looking/listening for a large vacuum leak. If I couldn't find one, and there just happens to be a bent push-rod all of the sudden, causing the rough running AND the ticking noise...I think I'd be paying the dealership a visit, and demanding an explanation. Of course, they're gonna say "We didn't do nuthin to your car"...

A couple of years ago, I took the '74 to the Chebby dealer down the road from the shop for an alignment, because I didn't have the time to trailer it to the only other place I wanted to do it.
When I picked it up, a young punk drove it around to the front, got out, and said..."Eeez a nice car, Meeester...eez berry fas"
I left the service manager with a few choice words concerning that...Adams' Apple2007-10-08 19:26:11

[Quote=Adams' Apple]When I picked it up, a young punk drove it around to the front, got out, and said..."Eeez a nice car, Meeester...eez berry fas" I left the service manager with a few choice words concerning that...[/QUOTE]



(fixed quote box)Adams' Apple2007-10-08 20:45:52