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HellaSchmidt

Problems with Renault Trafic Diesel - engine stalls, intense exhaust odor and suspected EGR valve malfunction

Check engine light on

Shaking while idling

Engine shuts off by itself

Strong exhaust smell

Loss of engine power

Unsteady engine

Hello everyone! I have a problem with my Renault Trafic Diesel, built in 2016. The check engine light is on, the engine just stalls, loses power and runs rough. I also have an intense exhaust smell and the car shakes when idling. I suspect a functional fault in the EGR valve. Have you had similar experiences and can you tell me how the garage solved the problem and what it did for you? I'm looking forward to your tips! Thanks in advance!

(Translated from German)

10 comment(s)


Best Answer

LeniiSpeed

Hello, I'm not a mechanic either, but I do have some knowledge as a hobby mechanic. I had a similar problem with my Renault Master Diesel 2014. The car was very bumpy all the time and also had a very strong exhaust smell. It turned out that the EGR valve was defective and stuck. They replaced the valve in the workshop and the car ran like clockwork again. It cost me a total of 355 euros. If you can give me a little more information about your car, I might be able to help you in more detail. Do you know whether the error is stored in the error memory? I hope that helps!

(Translated from German)

HellaSchmidt (Author)

Hi, thanks for your reply. Mine already has 28232 km on it and the last service was only recently, but it still didn't do anything. I don't know if the error is stored in the fault memory, the garage didn't say anything about it. I'll take it back tomorrow and ask about the EGR valve. Let's see if that's the cause of mine too. Best regards!

(Translated from German)

LeniiSpeed

Hey, no problem, that's what we're here for. With the mileage, the EGR valve should actually still hold. In my case, it was anyway. You can never be completely sure. In any case, ask about the EGR valve and whether they have already read out the fault memory. Let us know what comes out of it! Good luck and hopefully you'll soon have peace of mind. Greetings back!

(Translated from German)

HellaSchmidt (Author)

Hello, thanks again for your help! I took the car to the garage today and sure enough, the EGR valve was defective. It will be replaced and I hope that will solve the problems. I'll report back on how it goes afterwards. See you then and thanks for the tip! Bye!

(Translated from German)

Stephan

Hello, I have a Renault Trafic2 built in 2008 2,0dci 115. As soon as it runs for 15 minutes, the stop and check engine light comes on and then it goes out. When it is warm it can be started again but then goes off again immediately. I have no error message. Fuel filter, camshaft sensor, air filter, oil filter are new, oil change is done. Problem remains. When it is cold it runs cleanly at 40-50°C it simply goes out. ADAC couldn't find anything either. I have a new crankshaft sensor here but don't know where it is, I've searched everywhere and can't find it. But if that's not it either, I'm at my wit's end.

(Translated from German)

CarlyMechanic

@Stephan

Hello, I have a Renault Trafic2 built in 2008 2,0dci 115. As soon as it runs for 15 minutes, the stop and check engine light comes on and then it goes out. When it is warm it can be started again but then goes off again immediately. I have no error message. Fuel filter, camshaft sensor, air filter, oil filter are new, oil change is done. Problem remains. When it is cold it runs cleanly at 40-50°C it simply goes out. ADAC couldn't find anything either. I have a new crankshaft sensor here but don't know where it is, I've searched everywhere and can't find it. But if that's not it either, I'm at my wit's end.

It sounds like you've already done a lot of troubleshooting. Since you've mentioned that the problem occurs when the engine warms up, it could be related to a faulty coolant temperature sensor. This sensor informs the engine control unit about the engine temperature and if it's faulty, it can cause the engine to stall when it gets warm. I would suggest checking this sensor. If you're not comfortable doing it yourself, it might be best to have a mechanic look at it. Please let us know how it goes.

CarlyMechanic

@Stephan

Can the sensor also be defective although the temperature is displayed correctly?

Yes, it's possible. The coolant temperature sensor sends information to both the engine control unit and the temperature gauge on your dashboard. It's possible for the sensor to fail in a way that it sends incorrect information to the engine control unit while still displaying the correct temperature on the gauge. I would still recommend checking it. Please keep us updated on your progress.

CarlyMechanic

@Stephan

Thank you, I will check it and report back. Can you tell me where I can find the crankshaft sensor? I already have it here and would also like to replace it

The crankshaft sensor is usually located near the crankshaft itself, which is at the bottom of the engine. It's often near the front of the engine, close to the timing belt or timing chain. However, the exact location can vary depending on the engine design. If you're having trouble finding it, a repair manual for your specific model might be helpful. Please let us know how it goes.

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