This Volvo V40 came in with a check engine light. Our check found a gearbox problem and a fuel injector problem, and testing after that work found a worn engine mount. Here is how we fixed all three.
Job completed: June 2026
| Car | Volvo V40 (automatic) |
|---|---|
| Symptom | Check engine light on the dash; a strong vibration from a worn engine mount was found on testing after the first repairs |
| Fault found | A gearbox problem needing an overhaul and a fuel injector problem; testing after that work found a worn engine mount |
| Repair done | Full gearbox overhaul and four new fuel injectors, both tested good, then the worn engine mount replaced |
| Parts | OEM-grade replacement parts |
| Time taken | Timeline confirmed at diagnosis |
| Cost | Quoted at diagnosis, before any work began; the engine mount was quoted separately |
| Warranty | 2 years / 40,000km on the gearbox overhaul |
The owner contacted us about a check engine light on this Volvo V40 and brought the car in that same afternoon. A warning light can come from many things, so we needed to check the car in person before saying what was wrong.
A warning light is worth acting on early. Driving on with an unknown fault can turn a small repair into a bigger one. Once we explained what we found and the price, the owner left the repair to us.
The car is a Volvo V40 with an automatic gearbox. Inside the gearbox, clutch and friction parts grip and release to change gears. The fuel injectors spray fuel into the engine, and the engine mounts hold the engine steady so its movement does not shake the whole car.
Over the years and the kilometres, those clutch parts wear, injectors get tired and spray poorly, and a rubber engine mount perishes and lets the engine rock. Reading the car properly is the only way to know which parts are actually worn, which is why we diagnose before we quote.
The warning light could have come from many things, so we checked the car in person rather than guess. We found two separate problems: the gearbox needed an overhaul, and the fuel injectors needed replacing.
We quoted both that afternoon, before any work began. The gearbox overhaul quote excluded the valve body and the torque converter. The owner approved both jobs.
When the gearbox and injector work was done, we tested the car. That test found a worn engine mount causing a strong vibration through the car. We quoted it on its own, and the owner approved it before we fitted the new mount.
These were three separate faults, found at different stages. The gearbox and fuel injector problems showed up when we first checked the car. The worn engine mount only showed up when we tested the car after that work.
Inside an automatic gearbox, clutch and friction parts grip and release to change gears, and they wear with use. When they wear, fresh fluid does not bring them back, and the fix is an overhaul. Fuel injectors can stop spraying cleanly, and a rubber engine mount hardens and cracks with age, letting the engine shake the car.
We fixed the car in stages, and the owner approved each stage before we started it.
The owner then collected the car. The gearbox overhaul carries a 2 year / 40,000km warranty.
On this V40 we quoted the gearbox overhaul and the four fuel injectors when we first checked the car, before any work began. The worn engine mount was quoted on its own when our test after that work found it, and the owner approved it before we fitted it. The gearbox overhaul is backed by a 2 year / 40,000km warranty.
What moves the price is the gearbox itself and what else the car needs. The overhaul quote on this car excluded the valve body and the torque converter. We tell you what a quote covers before you decide.
The earliest signs are small. A gearbox that jerks on a shift, hesitates before it engages, or slips so the engine revs climb without the car pulling. A rough idle or a stumble on acceleration points at the injectors. A new vibration that grows over time often means a tired engine mount.
Catching it early matters. A slipping gearbox wears itself faster the longer it runs, so a small problem can grow into a full overhaul. Changing the ATF on schedule and getting any slip, rough running or vibration checked early gives the car its best chance, and lets us fix a small fault before it damages the rest.
This Volvo V40 (Gearbox overhaul) was handled at 1 Car Service, an independent workshop in Sin Ming AutoCity, Singapore. For Volvo, we use dealer-level VIDA diagnostics. The work is backed by our 2-year, 40,000km warranty. We hold a 4.9★ rating from 1,836+ Google reviews.
WhatsApp us your car model, year and what it is doing. We'll tell you what is likely wrong and what it costs before any work begins. A full gearbox overhaul is backed by a 2 year / 40,000km warranty.
It depends on the car and what the gearbox needs. On this Volvo V40 the job also covered four new fuel injectors and a new engine mount, with the gearbox overhaul carrying a 2 year / 40,000km warranty. We check the car first, then quote before any work begins.
Because there were three separate faults. Our first check found a gearbox problem and a fuel injector problem. Testing after that work found a worn engine mount causing a strong vibration. We quote each fault on its own, so you decide on each one.
Only if the fluid is simply old or low and nothing inside is worn. Once the internal clutch and friction parts are worn, fresh fluid does not bring them back. The proper fix is to overhaul the gearbox and replace the worn parts, not just change the oil.
No. On this V40 the gearbox overhaul quote excluded the valve body and the torque converter. We quoted each extra job on its own, so the owner approved every item before we did it.
Yes. A full gearbox overhaul at our workshop carries a 2 year / 40,000km warranty, whichever comes first. We confirm the exact terms with you before the work starts.
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