Can't guess at exact amounts, but anything requiring disassembly of the rear axle would probably be most expensive. It would also be the least likely cause of the noise.
The most common source of grinding would be the front brakes, especially if it only occurs during braking. If the front brake pads are worn so metal is grinding on metal, you will probably need one or two front rotors as well as the pads. Rotors have come down in price over the last ten years, but you are still looking at around $200.00 to $300.00 for a front brake job, maybe a little more.
If the grinding still occurs when you are not pressing the rake pedal, but it is brake-related, there could be a sticking front caliper. Here too, the cost of professionally rebuilt calipers has come down a real lot compared to the early 1990s. The rubber hoses should be replaced too if there is any sign of dry rotting or cracking of the outer casing. These parts can add perhaps another $150.00 to $200.00 to the bill.
The best thing to do is get an inspection and estimate. Sears used to offer free front end and brake inspections in the '80s. They might still do that. Labor rates vary a lot across the country too so it's hard to give a better guess on cost of repairs, especially when we aren't sure it's even a serious problem.
Saturday, April 17th, 2010 AT 3:29 PM