Hey folks need some help here. Did my 100k maintenance yesterday and now I'm having a weird vibration/rattle at idle. It can only be heard inside the car. I changed the t case fluid, both differential fluid change and coolant change. I completed the t case reset and completed the 12min water pump bleed cycle. It only happens when I'm stopped or in park and at idle. If I raise the rpms even 100 it goes away. I went back and rechecked everything. I had to drop the exhaust and heat shield so I recheck those as well appreciate the help in advance

 

Check all the exhaust shields. Sometimes the bracket welds break and it vibrates at certain frequencies. The cracks are very difficult to see and really requires you to feel the shield and see if there is play or movement. Inspect quickly before exhaust gets hot

 

Will do that now. I've been diggin around and when I turn my a/c off the rattle stops. I can't tell if this is because the engine is unloaded or if my ac is failing.

 

So this is for sure an a/c issue. When I shut it off and let the pressure bleed down in the system the rattle goes away. Time to go to the dealer for diagnosis unless someone has a/c knowledge. Cause I have none!