FelixRi

Skoda Roomster Diesel Engine Issue

My 2008 Skoda Roomster with a diesel engine is giving me grief. The check engine light is on, and I've noticed higher fuel consumption. I've read it could be a VANOS failure, possibly a defect in one of the camshaft solenoid valves or a power supply issue. Could this be the cause, and what's the best way to diagnose it?

A 2008 Skoda Roomster with a diesel engine experienced issues with the check engine light and increased fuel consumption. The problem was suspected to be a VANOS failure, possibly due to a defect in the camshaft solenoid valves or a power supply issue. Inspection and diagnostic tools confirmed the VANOS solenoid valve was faulty. Replacing the solenoid resolved the issue, eliminating the check engine light and normalizing fuel consumption.

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4 comment(s)

I had a similar issue with my Roomster. Check engine light, and the car felt sluggish. I would inspect the VANOS solenoid valve, and its wiring. A faulty solenoid can definitely cause variable timing issues and trigger those symptoms. Have you checked for any engine misfire codes?

Thanks for the suggestion. Where exactly is the VANOS solenoid located, and is it something I can check myself without special tools? Also, how did you confirm it was the solenoid and not something else?

The VANOS solenoid is typically located on the cylinder head, near the camshaft. You can visually inspect it for damage or loose connections. I would advise against self-repair without experience. In my case, the workshop confirmed the VANOS solenoid was faulty using diagnostic tools to check the variable timing system. They observed the solenoid was not responding correctly. I recommend you to visit a professional.

Took it to the workshop. It was the VANOS solenoid valve. Replaced it, and the check engine light is gone, and the fuel consumption seems normal again. Total cost was around 250€.

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SKODA

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ROOMSTER