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KHBecker86

Black smoke and engine problems in 2011 Renault Fluence: suspected defect in the fuel filter heater

Longer cold start time

Black smoke from exhaust on acceleration

Check engine light on

Engine shuts off by itself

Car won't start

Hey guys, my 2011 Renault Fluence (diesel, 119505 km run) is really worrying me right now. The thing smokes black when I accelerate, the engine light laughs at me and then the engine stops by itself. The cold start time is also longer and sometimes the engine won't even start. I have a hunch that the fuel filter heater is broken. Have any of you ever had something similar and can tell me about your experience with such a defect and a visit to the mechanic? I had trouble with the mechanic last time and don't want to go in without any information. Thanks in advance!

(Translated from German)

4 comment(s)


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!

(Translated from German)

KHBecker86 (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?

(Translated from German)

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?

(Translated from German)

KHBecker86 (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!

(Translated from German)

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