New Ford Mustang with Low RPM Load Noise
Vehicle details 2018 FORD MUSTANG COUPE Vin 1FA6P8V02K…,030 km (New car) Sold in Australia as a Right hand drive car.
The dealer told my customer that this problem is ok and the noise is normal and nothing to worry about. My customers friend as the exact same model and his car is quite.
This car has a E4 order of vibration and before I go delving into this problem I want to know if anyone has any insight into this issue as there could be a known problem with these cars and there may be a TSB on this issue. Here in Australia we are still denied access to dealer TSBs, we normally find what we want though but this being such a late model car means I can not access any info here in Australia.
I also realise as this car is RH drive so this problem may be only an issue with the export models
When driving the car you only hear the noise when the car is under load at light rpms and in the lower gears. Usually going up a hill but not every time. The customer said it is worse when cold. When in the workshop and holding the rpms up you can hear a noise that seems to represent the noise we hear on the road but not as pronounced. the Pico NVH shown in this thread is captured with the accelerometer sensor directly on the engine and it is obvious that I am picking up a E4 order of vibration. On the road with the accelerometer sensor on the seat rail it is not as obvious but still the E4 is the most noticeable but is not going that much over 10mg.
If any of you Ford guys have any knowledge please could you let me know.
When I first heard this noise it reminded me of a gear mesh noise we can get some times if the tail shaft is out of alignment or the gear is not mesh is not meshing properly. But the fact that the noise changes under hot an cold conditions and that the noise is not noticed every time we go up the same hill at the same rpm makes me rule this out as the reason.