Ok, I have read through countless threads and checked, re-checked, and than checked everything over and still can't find the source. My problem is this, my car runs perfect, as smooth as can be, up untill I go to idle. It idles fine for a quick second, than just starts to become shcky/vibrate. I can feel it in the steering wheel, seat, shifter, and pedal. It is very annoying and didn't appear till after my installation of my jackson racing supercharger. Now if this is something that just comes along with the supercharger, than I guess I will have to deal with it but haven't seen others have this issue. Any help would be apreciated



Things I have checked:

IAVC (took off, completely cleaned till it looked new)



Perfectly clean Throttle Body



Checked for any gasket leakes by holding my hand over the throttle body, it died right after



Replaced plugs with one step colder ngk's gapped at .28



OEM Spark Pug Wires/Autozone cap/rotor replaced all at once less than 5000 miles ago



Coolant is all brand new after charger install



No Vacuum leaks, everything is clamped down

 

I had a problem with my integra where it would idle fine during start up for a few seconds then it would start idling all crazy. It would raise and lower rpms from about 1600 rpms to about 500 rpms and it would continue to do that until I started driving then when coming to a stop it would do it again. I checked the fast idle thermometer valve that's directly underneath the intake manifold. It has coolant lines connected to it. When I opened it up all the components inside were loose, I cleaned it all up and tightened evrything inside, re-installed it and boom problem gone. Might be worth a look.

 

Thing is I don't have a fast idle thermometer valve, my car is a 2000

 

did you bleed the coolant? Sometimes airbubbles in the cooling systems can cause that. Just a thought.

 

A friend of mine had a really bad shaky/rough feel in his integra and he ended up having to replace his motor mounts. Both of the bushings inside of the two side mounts were torn to crap. He replaced those and it fixed his problem. It shook terribly but especially around 3k+ rpms.

Also, make sure all of your supercharger components are installed correctly. Since the supercharger is adding those extra horses, it could be causing unnecessary shaking if something is loose or isnt installed like it should. Just a thought.

It's always best to search for the smallest problems that it may be then to jump to conclusions that may end in tons of money being spent. *I've learned from experience myself lol

 

what rpm are you idling at?