Denver Auto Repair

A climb into the mountains can reveal a problem that barely appears on level streets. You press the accelerator, the car struggles to gain speed, and the engine sounds busier than expected. That can suggest clutch slip, but reduced engine output, the wrong gear, or another driveline concern can create a similar impression. The useful distinction is how engine speed changes compared with road speed while the clutch pedal is fully released. In a manual-transmission car, that relationship helps separate lost power from power that is not reaching the wheels. This observation is a starting point for inspection, not a reason to repeat hard acceleration tests. Clutch Slip Changes the Relationship Between RPM and Speed With the clutch fully engaged in one gear, engine RPM and vehicle speed normally rise together. If the engine suddenly speeds up while the car gains little speed, the clutch may not be holding the load. You may notice this most during sustained acceleration ... read more