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What is the cause of the abnormal noise in the Excelle transmission?

3 Answers

GrahamLee

07/29/25 3:57pm

The causes of abnormal noise in the Excelle transmission are: 1. Bearing wear and damage; 2. Abnormal gear meshing clearance; 3. Gear tooth surface metal peeling, tooth breakage, or assembly misalignment; 4. Insufficient lubrication due to lack of lubricating oil; 5. Transmission water ingress; 6. Loose housing bolts; 7. Excessive clearance between the shift lever and the shift fork groove in the manual transmission; 8. Long-term failure to replace transmission oil. The Excelle is a 4-door, 5-seater compact sedan with body dimensions of 4468mm in length, 1765mm in width, 1469mm in height, and a wheelbase of 2611mm. It is equipped with a 1.3L naturally aspirated engine and a 5-speed manual transmission.

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JamesDella

08/15/25 3:58am

Last time my friend's Excelle had this issue, the mechanic said it's quite common. If the transmission fluid hasn't been changed for a long time or has deteriorated, insufficient gear lubrication can cause clunking noises. My friend's car became quiet immediately after changing the oil. For older cars, you also need to check bearing and gear wear, especially after running over 100,000 kilometers - the sound of metal grinding becomes very noticeable. By the way, a faulty hydraulic control unit can also cause clicking sounds, like a stuck solenoid valve. If there's a clunk when shifting gears, it might be a loose CV joint. Don't delay - abnormal noises are like warning signals from your body. It's better to visit the repair shop early for a computer diagnostic scan. A few hundred yuan for inspection is much cheaper than a major transmission overhaul.

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LincolnLynn

10/12/25 4:53am

My old Buick Excelle used to make a humming noise when accelerating on the highway. The mechanic found worn bearing balls after disassembly, like an enlarged version of a bad bicycle bearing. Aging transmission mount bushings can also cause metallic clunking sounds, especially when going over speed bumps. Additionally, worn synchronizers produce a screeching sound during gear shifts, more noticeable in manual transmissions. The mechanic said torque converters in Buick models occasionally make a clattering noise, requiring oil pressure tests to diagnose. Once I felt gearshift hesitation with metallic grinding sounds – turned out to be a failed clutch release bearing. Now I change transmission fluid every 3 years and regularly inspect rubber components. Older cars demand diligent maintenance.

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