172 Speedo fault

H

Hackt1v1zt

  Clio 172 cup

• Oct 5, 2024

• #1

Noticed that my speedo keeps dropping, so it will start off fine when I turn the car on but it seems that when I get into gear 4 or 5 the pin drops to zero. It also feels like there is a change in power when the pin drops. Notice it the most on the motorway. Any suggestions to what it could be ?

 

NorthloopCup

ClioSport Moderator

  Alien Green 200

• Oct 5, 2024

• #2

Start simple and replace the speedo drive sensor that’s on the gearbox. It’s the usual culprit for this fault, as it’s a mechanically driven electronic sensor.

 

H

Hackt1v1zt

  Clio 172 cup

• Oct 5, 2024

• #3

NorthloopCup said:

Could that also have something to do with the change in power ?

Click to expand...

 

NorthloopCup

ClioSport Moderator

  Alien Green 200

• Oct 5, 2024

• #4

It’s not something I’ve heard of before mate with it losing power.

 

Colin-S

ClioSport Club Member

  172 Cup

• Oct 6, 2024

• #5

I've had this issue of the speedo drop to zero. At first it was only doing it a few times then it would stay at 0 for 5 to10 seconds before going back to normal speed. Replaced the Speedo sensor and that fixed it.

Renault Part Number: 7700418919

 

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P

PP200t

  2014 Clio 200t edc

• Oct 6, 2024

• #6

I too had to change the speedo sensor on the gearbox on my 172. Same symptoms as your having and it was such an easy fix to change. Definitely worth changing it for the cost

 

adamlstr

ClioSport Club Member

  Cayman

• Oct 6, 2024

• #7

It does change (I think) the throttle sensitivity in 4th and 5th gear, for which the ECU will use the vehicle speed to calculate which gear it‘s in. When speedo drops out, if you’re in 4th or 5th you’ll notice a change in response.

I had this for a while with my 172 Cup, with the added benefit of the odometer not going up, just sayin’.

 

H

Hackt1v1zt

  Clio 172 cup

• Oct 6, 2024

• #8

Thanks for the replies I’ll have a look at swapping the sensor when the weather is a little less wet.

 

H

Hackt1v1zt

  Clio 172 cup

• Oct 6, 2024

• #9

Colin-S said:

I've had this issue of the speedo drop to zero. At first it was only doing it a few times then it would stay at 0 for 5 to10 seconds before going back to normal speed. Replaced the Speedo sensor and that fixed it.

Renault Part Number: 7700418919

Click to expand...

Roughly how much did you pay I’m seeing them for like 8 pound all the way up to like 63 from ktec racing ?

 

Colin-S

ClioSport Club Member

  172 Cup

• Oct 6, 2024

• #10

Hackt1v1zt said:

Roughly how much did you pay I’m seeing them for like 8 pound all the way up to like 63 from ktec racing ?

Click to expand...

You can buy a non OEM one but I bought a Renault one off ebay from a private seller - new £33.50

One on Ebay now for sale £24.99

https://www.ebay.co.uk/itm/26449142...8jddO1LS6z2W7nH2TQrVviFd29BX|tkp:BFBMzp7cssxk