After about 10-15 minutes of driving and the engine all nice and warm, I get this weird shimmy at idle. The RPMs don't go up or down, but it just slightly shakes. Its usually every 5-15 seconds when I'm at a full stop. I've already put new caps, wires and plugs. (Rotor napa sold me was hitting the cap and broke off the tip, so the old one got stuck back in) I replaced all of this after I had major missfire on #5 as well. Also has a new TPS in it to. Hopefully this isn't a symptom of a massive malfunction :/

 

Does it run good otherwise??

 

Yeah, it runs pretty well, getting poorer mpg of late but that could be because the winter up here in North Dakota is in full force. Temp gauge seems to be running cool on acceleration, but cruising it tend to come back up. Any shimmy if there is while driving is indistinguishable from bumps. Sometimes there is a good vibration when I'm just crawling forwards, no gas but no brake, but not often, maybe twice in the past week or two.

 

May just need to re-route the plug wires. There was a TSB (technical service bulletin) for that.....

 

Hmm okay I'll try it, I gotta put a new gasket on the throttle body to intake gap anyhow, I'll have room to maneuver haha.