Since I got a quieter exhaust on my '90 5.0 hatch I can notice a low growling noise (for lack of a better term) coming from the back of the car. It seems most noticeable at lower speeds, but perhaps that's just because everything else isn't as loud. I can hear it best if I turn my head and look out the passenger window (ie: through my right ear).
Since it's a hatch I imagine NVH is transmitted more into the cabin from the rear end. I have UPR's rear upper and lower control arms, as well as all new shocks/struts within the past 100 miles.
How can I distinguish between a problem noise from the rear end and just regular tire/road noise? The tires are pretty well worn, so it's not unreasonable to think the noise is coming from the tires. I just want to make sure there isn't a bigger problem I need to take care of. Is the only way to test this buy new tires and see if it goes away?
I imagine jacking the rear of the car up, setting it on stands, and CAREFULLY running it through first and second gear wouldn't help. I would think the rear end would may behave (and sound) differently when subjected to a load as it is when it's sitting on the ground.
Since it's a hatch I imagine NVH is transmitted more into the cabin from the rear end. I have UPR's rear upper and lower control arms, as well as all new shocks/struts within the past 100 miles.
How can I distinguish between a problem noise from the rear end and just regular tire/road noise? The tires are pretty well worn, so it's not unreasonable to think the noise is coming from the tires. I just want to make sure there isn't a bigger problem I need to take care of. Is the only way to test this buy new tires and see if it goes away?
I imagine jacking the rear of the car up, setting it on stands, and CAREFULLY running it through first and second gear wouldn't help. I would think the rear end would may behave (and sound) differently when subjected to a load as it is when it's sitting on the ground.