KHBecker86
Black smoke and engine problems in 2011 Renault Fluence: suspected defect in the fuel filter heater
(Translated from German)
Summary of the thread
A 2011 Renault Fluence is experiencing black smoke, engine stalling, and cold start issues, suspected to be due to a defective fuel filter heater. Similar symptoms were resolved in another vehicle by repairing the wiring harness and plug for the fuel filter heater, which can be damaged by engine heat and vibrations. The suggested solution is to have the fuel filter heater and its wiring inspected and repaired, which previously cost around €110 and resolved the issues effectively.
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4 comment(s)
KHBecker86 (community.author)
Hello there! Exactly the same problem happened to me once with my old Fluence. After changing the fuel filter heater, it ran like a kitten again. So it really seems to be a ramp. But tell me, how deep did you have to dig into your pocket for the repair? Were there any other problems afterwards or has everything run smoothly since then?
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FredBaum
Well, after I had this defect in the fuel filter heater repaired by my mechanic, everything ran like clockwork again. I haven't had any more problems with the car since. Of course, the repair is always a question of money. In my case, it cost me €110 to repair the damage to the wiring harness and fuel filter heater plug. That's a lot of money, I know, but since then things have been quiet and my car is purring like a kitten again. I hope that eases your worries a little. You'll just have to ask your mechanic if he can give you a good price, right?
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KHBecker86 (community.author)
Hey, that's really good news! 110 euros is totally acceptable to me if it means my car will run properly again. So I'll probably hop down to the mechanic and get it checked out there too. Hopefully I'll get a fair price as well. Thanks for your help, you've really helped me out. I'm a little less stressed now after your experience. Cheers to helpful car people like you!
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RENAULT
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FLUENCE
FredBaum
Hello, I had a similar problem with my 2014 Renault Mégane. The wiring harness/plug for the fuel filter heater was damaged. The symptoms were the same: black smoke, engine light and engine stalling. Cold starts were a pain and sometimes the car wouldn't start at all. So it doesn't even have to be different with damage like that, does it? The mechanic said at the time that this part can easily break due to the heat and vibrations that occur in the engine compartment. And yes, that sounds bad at first, but as far as I understood, it's not a serious matter if you catch it in time. In the end, they had to replace the damaged wiring harness and plug. The repair wasn't that bad, as far as I could tell. Sure, you don't want to drive around with a broken car, but once the repair is done, it's business as usual. So, keep your head up, buddy. I hope this helps you a bit!
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