detlef_friedrich1
Seat Arosa Diesel Engine Light and Fuel Consumption Issues
Summary of the thread
The 2003 Seat Arosa diesel was experiencing a persistent check engine light and increased fuel consumption. The mechanic suspected issues with the inlet VANOS mechanics, possibly due to a faulty camshaft solenoid valve or power supply. Another person suggested checking the VANOS solenoid and for oil sludge under the valve cover, as these are common problems. After replacing the VANOS solenoid, the issues were resolved, with the check engine light off and fuel consumption returning to normal.
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4 comment(s)
detlef_friedrich1 (community.author)
VANOS solenoid, eh? Where is that located, and is it something I can tackle myself? I'm fairly handy with a wrench. And what's the deal with the oil sludge? Where would I look for that?
timhunter7
Yeah, definitely sounds like the solenoid. It's usually bolted onto the cylinder head, near the camshaft. You can probably find some videos online showing how to replace it. As for the oil sludge, check under the valve cover. If it's gunked up in there, it could be affecting the VANOS system. If you're not comfortable doing it yourself, get it checked out at a workshop. Better safe than sorry!
detlef_friedrich1 (community.author)
You are a lifesaver! It was indeed the VANOS solenoid. Changed it out, cleared the error codes, and she's running like new. Fuel consumption is back to normal, and that check engine light is finally off! Cost me around 250€, but well worth it. Thanks again for the help!
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SEAT
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AROSA
timhunter7
Whoa, sounds familiar! I had a similar headache with my Arosa. Check engine light, felt like it was drinking fuel, the whole shebang. I'd put money on it being the VANOS solenoid. They're notorious for causing trouble. Have you checked for oil sludge? It can mess things up.