What is the reason for the abnormal noise when accelerating the GAC Trumpchi GS4?
3 Answers
Reasons for the abnormal noise when accelerating the GAC Trumpchi GS4: Lack of power steering fluid. Power steering fluid is a medium oil added to the power steering system, which serves to transmit steering force and provide cushioning. Power steering refers to the use of external force to enable the driver to complete steering with less effort, making driving easier and more agile, thereby improving driving safety to a certain extent. The GAC Trumpchi GS4 is a compact SUV. Taking the Trumpchi GS4 2021 270T manual comfort version as an example, its power system is equipped with a 1.5L inline four-cylinder turbocharged engine, with a maximum power of 124kW and a maximum torque of 265Nm, matched with a 6-speed manual transmission.
Last time my GS4 also made a hissing sound during acceleration, which was really annoying. The inspection revealed it was due to the aging alternator belt slipping, creating a sharp metal friction noise like chalk scratching a blackboard. Another common issue is loose underbody panels, which produce a clattering sound on bumpy roads. Turbo car owners should pay attention - a puffing sound during hard acceleration might indicate a boost pipe leak, similar to a deflating balloon. Worn CV joints can cause rhythmic knocking sounds, more noticeable during turning and acceleration. Actually, for such abnormal noises, it's best to have an experienced mechanic test drive the car and locate the source with a stethoscope. I remember last time at the 4S shop, they spent three hours on the lift and finally found it was the exhaust heat shield resonating - tightening two screws with a wrench fixed it. I suggest getting it checked ASAP. Last time I delayed and ended up damaging the tensioner pulley bearing.
My GS4, which has run 80,000 kilometers, made a gurgling noise during acceleration last month. The repair shop first checked three areas: a broken clip on the air filter box can cause a snapping sound, especially noticeable on rough roads; cracked engine mount bushings produce a metallic clunk during acceleration; the most easily overlooked is the carbon canister purge valve, with a ticking sound loudest at 1500 RPM. For turbo models, also check the diverter valve diaphragm—a hissing leak sounds like a slow tire puncture. Some owners have experienced tensioner failure, causing the belt to squeal rhythmically. It's recommended to focus on these wear-prone components. Remember to record the abnormal noise with your phone; letting the mechanic hear the sound directly is more effective than a verbal description.
