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magdalenaice1

Renault Avantime Idle Stalling

I have a 2003 Renault Avantime with a gasoline engine that has 222877 km. The check engine light is on, and it occasionally stalls at idle. Diagnostics suggest a tank ventilation valve malfunction. The hoses look potentially clogged. Has anyone else had this?

Summary of the thread

A 2003 Renault Avantime with a gasoline engine is experiencing idle stalling and a check engine light, with diagnostics pointing to a tank ventilation valve malfunction and potentially clogged hoses. The issue may be related to the EVAP system, which can also affect fuel efficiency. Suggested solutions include checking the gas cap, pressure sensor, and vacuum lines for damage or cracks. Ultimately, the problem was resolved at a workshop by addressing the tank ventilation valve and clogged hoses.

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4 comment(s)

antoniawolf76

I recall a similar issue with an older Renault Megane. The symptoms were comparable. Before replacing the purge valve, have you checked the gas cap and the pressure sensor? A faulty gas cap can sometimes trigger EVAP system errors. Also, inspect all vacuum lines connected to the valve; cracks can cause issues, as I found out.

magdalenaice1 (community.author)

Thanks. Regarding the gas cap and pressure sensor, are there specific tests to confirm they work, or is a visual inspection enough? Also, could a faulty EVAP system impact fuel efficiency beyond causing idle issues?

antoniawolf76

A visual inspection can reveal obvious damage, but testing the gas cap requires a pressure test, ideally with a specialized tool. For the pressure sensor, diagnostic equipment is needed to monitor its readings. A faulty EVAP system can certainly affect fuel efficiency, alongside issues with idling and emissions. Considering the age and the potential complexities, a workshop visit may be prudent, unless you have advanced diagnostic capabilities.

magdalenaice1 (community.author)

I appreciate the advice. Based on your recommendation, I brought the Avantime to a workshop. It was indeed the tank ventilation valve and some clogged hoses within the EVAP system. The repair cost 175€.

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RENAULT

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AVANTIME