If you're experiencing a noisy elliptical machine, the first step is to try to pinpoint the source of the noise. This will give you a better idea of what needs to be repaired or replaced. First, check all the bolts on the machine to make sure they're tightened properly. Loose bolts can cause rattling and other noises during use. If you find any loose bolts, tighten them using a wrench or pliers. Next, check the pedals for any signs of damage or wear. If the pedals are damaged, they may need to be replaced. If they're simply worn, try lubricating them with a silicone-based lubricant. Finally, check the bearings on the machine. Bearings can wear out over time, causing grinding or squeaking noises. If you suspect the bearings are the issue, you may need to replace them. How to Diagnose and Repair Resistance Problems on an Elliptical If you're experiencing resistance problems on your elliptical machine, start by checking the resistance level on the console. If it's set too high, adjust it to a lower level and see if that fixes the problem. If the resistance is still too high or too low, check the resistance motor. This motor controls the resistance levels on the machine and can sometimes malfunction. If you suspect the motor is the issue, you may need to replace it. Another potential issue with resistance problems is a worn or damaged belt. The belt is responsible for transferring power from the motor to the pedals, and if it's worn or damaged, it can cause issues with resistance. Try inspecting the belt for any signs of wear or damage, and replace it if necessary.