[Chrysler kid]

Most of the exhaust manifold cracks occur around the primary oxygen sensor on the exhaust manifold around 180k miles regardless of vehicle. Cast iron seems to have a certain amount of heat cycles before they stress and crack.

My hx cracked at the o2 sensor and would only trigger a check engine light when the car was running and the hood was popped


You should also clean out the egr ports, there is a write up around here somewhere