PatNeuMan
Overheating and indicator light on Peugeot 107: Possible causes and experiences with workshops
(Translated from German)
Summary of the thread
A 2007 Peugeot 107 is experiencing overheating and a check engine light issue. The suspected cause is a faulty coolant temperature sensor, but another user shared a similar experience where the problem was due to a faulty engine control unit. The solution involved professional diagnosis and replacement of the engine control unit, which resolved the issue. It is advised to have the car checked by a professional to accurately diagnose and fix the problem.
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4 comment(s)
PatNeuMan (community.author)
Thanks for your advice! I wouldn't have guessed that it could be the engine control unit. Do you remember how expensive the whole thing became for you? And have you had any problems with the car since then, or is everything running smoothly now? I'm pretty annoyed about the whole thing and hope that I'll have peace of mind after this.
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RudiN2021
Hey, you're welcome! The engine control unit was indeed not cheap fun. It cost 1000 euros. Quite a lot of money, I tell you. But since then, everything has really been in the green. And you were right about the coolant temperature sensor. The mechanic has fixed it since my visit because it was faulty. Since then, I've had no more stress with the car - it purrs like a kitten now. Hopefully you'll get your speedster running again!
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PatNeuMan (community.author)
Hello, oh man, 1000 euros is a lot of money. But if it solves the problem and I can drive my car with peace of mind afterwards, it will probably be worth the price. And good to know that the coolant temperature sensor also plays a role. I really hope this fixes the problems. Thanks again for your advice and support. I'm off to the garage tomorrow morning and pray that all goes well. Keep your fingers crossed for me!
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PEUGEOT
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107
RudiN2021
Hello, my 2004 Peugeot 104 also had a similar problem, incidentally it was also a petrol engine. It was actually a serious problem and turned out to be a faulty engine control unit, not the coolant temperature sensor. The symptoms were similar: Check Engine light came on and the car tended to overheat. They first thought it was the coolant temperature sensor, but after a thorough check they found that the engine control unit was faulty. Of course, it was necessary to go to the garage for a repair to replace the faulty unit and get the car back to normal. It wasn't an easy fix, but it solved the problem and everything has been fine ever since. So from my experience, I would advise you to consider that too, and have the car checked by a professional. Hopefully that will solve your problem. Good luck!
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