Volvo C70 Sputtering Engine

My 2001 Volvo C70 with a gasoline engine is sputtering. It's got 224662 km on it. The check engine light is on, and the engine is running rough. I'm experiencing reduced power and jerking when accelerating. It occasionally stalls at idle. Could this be a mixture preparation error? I suspect a defective injector. Is this a common issue?

4 comment(s)

Rough running and check engine light on a C70 could be a few things. Have you checked for any vacuum leaks around the intake manifold or throttle body? What kind of fuel economy are you getting?

Vacuum leaks? Where exactly should I be looking around the intake manifold and throttle body? And regarding fuel economy, what should I be expecting, less or more?

Leaks are hard to spot without proper equipment. If the mixture is off because of a bad injector, the car would run rich and drink more fuel. Honestly, with those symptoms, you are best off getting it properly diagnosed. Could save you money in the long run.

Thanks for the advice! I took it to a workshop, and you were spot on; it was indeed a defective fuel injector, causing a rich mixture. The bill came to 515€, but at least my C70 is running smoothly again!

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