JohWeber91

Looking for advice: Renault VelSatis with various symptoms - suspected ignition coil defect

Hi folks, Unfortunately I had a rather unpleasant experience with my last visit to the garage and would now like your help. I drive a Renault VelSatis gasoline engine, built in 2008, with about 128557 kilometers on the clock. Recently, my car has been showing the following symptoms: black smoke when accelerating, the check engine light comes on, power loss in the engine, engine running out of round, jerking when accelerating, won't start, excessive fuel consumption, stalls when idling and vibrates when stationary. I suspect that it is an ignition coil defect or misfiring. Has anyone had similar problems with their car and can share their experiences with their garage? Would be really grateful for any tips. Thanks in advance.

(Translated from German)

A Renault VelSatis owner is experiencing multiple engine issues, including black smoke, power loss, and excessive fuel consumption, and suspects an ignition coil defect or misfiring. Another person shares a similar experience with a Renault Mégane, where the problem was traced to a faulty engine control unit (ECU) rather than the ignition coils. The suggestion is to have the fault memory read at a workshop to determine if the ECU is the issue, as it can cause similar symptoms. The advice is appreciated, and the owner plans to follow up on this potential solution.

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4 comment(s)

Hi, I can well understand how frustrating the situation is. I had similar symptoms last year with my 2011 Renault Mégane petrol car. It's crazy how similar the symptoms are. On mine, however, it wasn't the ignition coils or misfiring, but the engine control unit was faulty. The engine control unit regulates everything, from fuel consumption to idling, and if it is defective, problems like this can occur. The symptoms also point to an engine control unit defect rather than an ignition coil defect. Have they read the fault memory at the workshop? They did that for me and that's how the engine control unit defect was determined. That was quite a blow, because it's definitely not a small part that can just be replaced. But don't worry, it can be repaired, even if it's not trivial. So, don't worry, have the workshop read out the fault memory and assume that the engine control unit is faulty. Hope that helps you! Keep us up to date! Greetings, (first name)

(community_translated_from_language)

Hey, thanks for the helpful tip! I actually wouldn't have thought of a faulty engine control unit. I realize that the repair can be expensive, so it would be interesting to know what you shelled out for it, if you can remember? And have you had any other problems with the car since then? Greetings

(community_translated_from_language)

Hey, you're welcome! Yes, the repair wasn't exactly cheap. It cost me €1000 to fix the faulty engine control unit. But since the visit to the workshop, my Renault has been running like clockwork, no more ignition coil defects or misfiring. Now everything runs as it should. It was a tough pill to swallow, but it was worth it in the end. Hope this information helps you! Greetings

(community_translated_from_language)

Hey, that's a lot of money, but I think it's worth it if the car runs smoothly afterwards. I'll take your advice to heart and have the fault memory read out and the engine control unit checked next time I'm at the garage. Thanks for your help, it was really encouraging! Greetings

(community_translated_from_language)

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RENAULT

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VELSATIS