My speedo is only working intermittently and after checking out this forum I understand that the sensor is probably at fault.I think i have located it but can anyone please tell me how to disconnect the wire plug to it and also to remove the sensor?Thanks
Do a search for 'speedo sensor' and it'll pull a load of stuff up, including pics - most of it relates to the Clio but it may well be applicable to the 'guna as well - you'll find instructions on how to do cleaning and changing if required, unless someone's fiddled with all the gen since I looked at it last night :d
General concensus seems to be that the sensor clips into place, but it can be a royal pain in the backside to gain access to (I can attest to this for the Clio, at least!) A replacement sensor will cost you £25-30+VAT by the looks.
I had intermittent speedo issues travelling up north yesterday. Given that it was also extremely damp and foggy for much of the journey, and the car was a bit reluctant to start yesterday morning, I suspect that some water might have gotten into the sensor and caused it to go open circuit - lovely dry day today and absolutely no problems on the way back. I'm also using my GPS as a 'backup' speedo.
[EDIT: Forgot to add - if the sealing is a bit suspect, a glob of vaseline or similar is a good short term fix]
Here's a little trick I saw posted on t'Internet somewhere (wish I could remember where, though!) - it works on the Mk2 Clio, and may work for other Renaults with digital/electronic speedos as well:
If you suspect that your speedo sensor may be faulty, do the following:
Press the trip reset button, and keep it pressed down.
Turn on the ignition - keep the trip reset button pressed for 4-5 seconds.
Your trip and total mileage will then show all 8s and the speedo, rev counter, fuel and temperature gauge will go into 'test mode' - you'll see the needles on these gauges moving up and down through their range (eg. 20, 40, 60mph, fuel empty, 1/4, 1/2 etc.)
To leave 'test mode' just press the trip reset again - displays etc. will return to normal.
If it's the speedo sensor that's at fault, then none of the above will happen - the downside is that it's not really a lot of use if you've got an intermittent fault (as I have - car is going in on the 8th for a new speedo sensor)
This may be common knowledge, of course, but was news to me :d
Thanks very much for the info but I can't find the pictures etc. on the forum,could you please point me in the right direction?I have entered clio speedo but cant find it.
Thanks,
Tom
The article in question actually refers to the replacement of the sensor on a Laguna, but is equally applicable to the Clio in that a) the sensor is usually a clip-in job and b) is located behind the gearbox - on the Clio at least, it's a monumental pain in the backside to get at unless you can get the car up on a ramp and go at it from underneath.
Putting "speedo sensor" or "speedometer sensor" in as the search term might widen your options a bit more. Something else that might be worth investigating is the possibility of a bad earth connection in the engine bay (at least according to a few of the articles I've read)
I changed a sensor on a Clio 2 the other day,and it was a pain the ar$e!.From memory there were two plastic clips that needed to be pushed in to be able to get the sensor out,I think you have to push a small screwdriver into two holes either side of it to get it out.
Yep - once I'd worked out which bit I was looking for, I just said 'bugger it' and booked the car into the garage Fortunately(!) it's due a service anyway ...
Still a bit of a shocker when the speedo went to sleep and the engine management light came on whilst I was doing 70-odd on the A1 on Christmas Day, though ...
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