Coolant temperature gauge gone crazy.

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Nikola1801
Posts: 5
Joined: Wed Jan 29, 2020 11:37 am

Coolant temperature gauge gone crazy.

Postby Nikola1801 » Sat Aug 29, 2020 6:01 pm

Hi, I have problem on my Megane 1 1.6 from 98.
Temperature gauge isn't working properly, but engine temperature and thermostat are good. The hand on the gauge goes up and down rapidly and random when engine is hot, on idle or when I drive. I suspect on faulty sensor, but it can be problem with gauge. What you think?

scooper1000
Pass Plus
Posts: 230
Joined: Tue Mar 07, 2017 12:17 am
Currently Drives:: 2006 Renault megane 1.5 DCi Maxim

Re: Coolant temperature gauge gone crazy.

Postby scooper1000 » Sat Aug 29, 2020 6:44 pm

Hi i would replace the sensor first, its fairly cheap and easy to get to, hope that,s the ends of your problem..

Nikola1801
Posts: 5
Joined: Wed Jan 29, 2020 11:37 am

Re: Coolant temperature gauge gone crazy.

Postby Nikola1801 » Sat Aug 29, 2020 7:21 pm

https://youtu.be/vX2nH-mSiyE
Here you can see what's happening. Engine is hot (at operating temperature).

Nikola1801
Posts: 5
Joined: Wed Jan 29, 2020 11:37 am

Re: Coolant temperature gauge gone crazy.

Postby Nikola1801 » Wed Sep 02, 2020 4:50 am

Problem solved with a new sensor. I didn't know that a temperature sensor could cause problems like this. Realy weird. :-)


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