VW Nivus Engine Stalls: EVAP Purge Valve Fix Needed

Had the same problem on my 2017 VW T-Roc last year. The engine light came on while experiencing similar stalling issues. The automotive repair shop confirmed it was indeed the EVAP system, specifically a combination of a faulty purge valve and clogged vapor lines running to the fuel tank. The tank ventilation system had multiple issues: dirt accumulation in the hoses blocked proper fuel vapor flow, and the purge valve was stuck open. This caused irregular fuel mixture and idle problems. The repair involved cleaning the entire EVAP system and replacing the purge valve. This is actually a serious issue that needs prompt attention, as it affects both emissions control and engine performance. Left unchecked, it can lead to rough running, failed emissions tests, and potential fuel system damage. The diagnosis process included: Scanning for EVAP-related codes, Smoke testing the fuel tank and vapor lines, Testing purge valve operation, Inspecting all connecting hoses The complete fix restored proper idle, eliminated the stalling, and cleared the engine light. These symptoms are quite common on VW models from that generation.

Thanks for sharing your experience with the EVAP system issue. Your description of the symptoms and repair process matches what I am experiencing with my Nivus. The engine light and stalling problems are exactly the same. Would you mind sharing how much you ended up paying for the complete repair? Also curious if youve had any emission system related problems since the purge valve replacement and vapor line cleaning? The pressure sensor readings on my car are also acting up, which seems to tie into the fuel tank ventilation issues you mentioned. Just trying to get a rough idea of costs before heading to the shop.

After getting the tank ventilation valve fixed, I havent experienced any emission system problems. The pressure sensor now shows normal readings and the check engine light has stayed off. The repair was straightforward, the main issue was clogged hoses restricting proper fuel vapor flow. Total cost came to 175€ to clean and repair the vapor lines. Much cheaper than I initially expected. The mechanic did a thorough job testing the entire EVAP system to ensure there were no other underlying issues. The engine runs smoothly now with no stalling. Based on the symptoms you described, sounds like youre dealing with the same problem. Getting it fixed quickly helps prevent any additional fuel system complications. Worth noting these ventilation system repairs typically solve both the stalling and sensor issues in one go, since theyre usually connected to the same root cause. The original diagnostic proved spot on in identifying the clogged hoses as the main culprit.

Just went to get my Nivus fixed today and wanted to update everyone. The mechanic confirmed it was exactly the EVAP system issue discussed here. They found the purge valve was stuck and the vapor lines were pretty dirty. Diagnosis was quick since I mentioned the specific symptoms. Total repair came to 190€, which included cleaning the tank ventilation system and replacing the faulty valve. The pressure sensor readings are now back to normal and no more stalling issues. Engine running smooth again and the check engine light is finally off. Really glad I asked here first, helped me understand the problem and avoid getting overcharged. The whole repair took about 2 hours. Keeping an eye on things but so far everything is working perfectly.