idle sensor/ idle prob?

[Chet T16]

Its at the dash end and is part of the cable, i think

 

[Chris H]

its the dash end and its your problem. throw icv's, ecus, 2 goats and a lama at it, it won;t make any difference until the road speed sensor issue is sorted

 

[bidderman1969]

what about 2 hedgehogs?

 

[bidderman1969]

im not helping much am I?

 

[elviscat]

Renault only, £85!!!! jesus anyone got one 4 sale

 

[tob123]

im not helping much am I?

maybe you should try whipping it with your halfords wiper refills?

:lol:

 

[Chris H]

check the earthing on the sensor

 

[elviscat]

thanks Chris, can you give me an idea of where the earth is for this?

 

[Chris H]

its theblack wire on the sensor, cut it and make your own for it thats the best idea tbh.

 

[elviscat]

appreciate the response, gonna get stuck into this now

 

[elviscat]

do i need to take steering wheel off to get the panel out as i have an airbag! or will it come out without taking if off?

 

[Chris H]

comes off without taking it off, although its a lot easier with no wheel in the way

 

[elviscat]

Also i can only just get to/see the white block end of speedo cable plugging in the back of instrument panel, does it turn or something to unclip as it's holding the panel in?

 

[Chris H]

need to squeeze the tags on each side of it in

 

[elviscat]

got it ta, i c the black and yellow that go into the plug

 

[elviscat]

all done, new cable and sensor fitted...fixed

 

[R1916S]

Hi Chris.
This is how I got on to the forum.
See elvis has posted again. but after a few days the idle should settle.
My car is still on the road and gets ragged up the side of the mountains once in a while.
More into cycling at the mo though.
cheers

 

[elviscat]

Hi R1916,

Did you have similar problems as mine?

 

[R1916S]

Mine went to a 1400 rpm idle. But only after being reved over 3000 rpm.

If the ECU is not getting a reading from the speed sensor it goes into an emergency get you home mode that is basicly an 1400 idle. If I shut the engine off and restarted it it went back to normal idle untill it was reved to over 3000 rpm or so.

This may only be on european models.

The fix I found after 3 months was:- The problem started after I had changed a bulb in the dash.

Inside the white plastic road speed sensor on the end of the cable you will find a small black electronic sensor that gets a reading from a magnet on the cable. This had got bent back when I removed the dash. Pushing it carefully closer to the magnet fixed It.

Renault had the car for three days and told me it was the TPS and they had no new ones LOL. Changed the ICV. Cleaned the throttle body. Temp sensors brown and white.

 

[elviscat]

Hi m8,

it sounds very similar to my problem as mine is also bang on 1400rpm, what i'm finding hard to swollow is, if the car is still, i presume the speedo cable is not moving, and therefore not sending any information about movement of the car to the ECU. So therefore you would think the idle wouldn't begin correcting until your moving, compared to now i start the car idle begins as normal @ standstill, and then creeps up to and stays at 1400 rpm.

This makes me think would normal working of the sensor be; even though the cable is not turning the road speed sensor it is still sending a 0 for example rather than a 1, a 1 being sent when the magnet oscilates past the sensor. My point being even though the cable is not turning the ECU is still receiving information and therefore would normally stop the idle from going to 1400rpm.

maybe I need to speak to some bod from Renault France, as i really don't think city motors would even want to know what i'm banging on about!

I might get the dash back out perhaps, as it was working hunky dorey for 2 days after i fitted the new speed sensor!