S’Up Bronco Sport Fans!
Had an experience this last off road trip on the Round Valley trail in Stanislaus national forest.
Bronco JR started to have a high pitch siren’s call and grinding at low speeds and RPM. This was after “bumping” into some centered rocks on the trail. After checking wheels, breaks, axles we could not find what was causing that noise.
We continue up to top of Mount Reba. No overheating or control issues. Just occasionally Sirens calling. The grinding was like when Trail Assist is on but it was off.
We came down and got back on Hwy4.
We noticed going a higher RPM 3k-4k , there were no sounds and everything was good.
Monday I took my rig to my mechanic and used his lift. By this time the sounds were not so frequent. This is what I found:
I couldn’t see that the exhaust and resonator were smashed up against the driveshaft when on the trail. So I went to my favorite local muffler shop and $260 later that day:
The new aftermarket performance resonator is smaller, but allows more exhaust through than OEM so I have a slight improvement in power according to my muffler guy. Either case very inexpensive off-road damage and I told him that I’m sure I’ll be back in the future.
However, I will be extra careful when judging rocks. For those asking I have a 1.5” lift kit with all under armor - bash plates and rock sliders.
Obviously nothing for the exhaust system