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Gearbox speed/speedo sensor
#1
02 2.0Hdi Has anybody changed one of these ? We have managed to find it but due to space limitations Cannot see whether it is a "torx" or "allen" headed bolt that secures it (well my son cannot see what bolt it is I dont bend that shape anymore) Any help/tips much appreciated.
Kev W
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#2
Can you post a pic of its location please?
Somedays you're the pigeon, Somedays you're the statue.
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#3
(14-09-2013, 04:16 PM)steve valentine Wrote:  Can you post a pic of its location please?
Its on the gearbox above & behind the R/H drive shaft I cant get in there to get a pic, the drive shaft & turbo pipework restrict access. Haynes book of lies state undo bolt remove, this is the sensor if it helps?


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#4
Right hand shaft? Isn't the gearbox on the left (passenger side)? I've had a half assed attempt at finding it a couple of times and failed, my speedo hasn't worked properly for nearly three years! :whistle:
Somedays you're the pigeon, Somedays you're the statue.
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#5
I press my index fingerprint really hard on the fastener top, then quickly remove and look at the imprint left.

Guessing 10mm head bolt, otherwise try 5mm Allen key or T40 driver.
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#6
You didn't say why you wanted to change it. I had a problem were the speedo would go to 0. Interestingly the Bingo seemed more responsive (2.0 HDi). When speedo came back few mins later it seemed to slow down. May have been wasting fuel I suppose, but I did think that it might be an idea to interrupt the signal to the speedo to get an increase in performance when I needed it!! The rev counter worked OK though.
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#7
Speedo wandering all over the shop causing a jerky throttle response when pulling away and the same around the 30mph mark when town driving. A new speed sensor cheapest first option. Rev counter driven off of crank sensor. Correct SV g/box on left R/h driveshaft dive R/H wheel
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#8
Many thanks all. All fixed and road tested.
My son had another go today, and (as often happens after a walkaway & pulling your hair out) it all worked with no problems. Steve Valentine mucho apologista's I did not mean to sound condescending (a good night on Sat meant I was a little fragile this AM)
By the way my son is 26 & a time served vehicle tecnician, very handy now I dont want/cant do it myself (isnt parental guilt a wonderful thing!!!)
For those who wish to know it requires a 6mm allen key cut down to suit and a 6 mm combi spanner to turn it, the actual bolt is M7 (typical Citroen oddity) might be a lot easier if it was on a lift instead of a jack/axles stands.
I got the sensors from evil bay, search shops for FAP ltd (French Automotive products) for A great range of Citroen/Pug sensors, EGR, and the dreaded crankshaft pulley alternative. He Was very helpful with my questions which helped to confirm my own diagnosis.
[+] 1 user says Thank You to Husqyman for this post
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#9
(15-09-2013, 06:08 PM)Husqyman Wrote:  Many thanks all. All fixed and road tested.
My son had another go today, and (as often happens after a walkaway & pulling your hair out) it all worked with no problems. Steve Valentine mucho apologista's I did not mean to sound condescending (a good night on Sat meant I was a little fragile this AM)
By the way my son is 26 & a time served vehicle tecnician, very handy now I dont want/cant do it myself (isnt parental guilt a wonderful thing!!!)
For those who wish to know it requires a 6mm allen key cut down to suit and a 6 mm combi spanner to turn it, the actual bolt is M7 (typical Citroen oddity) might be a lot easier if it was on a lift instead of a jack/axles stands.
I got the sensors from evil bay, search shops for FAP ltd (French Automotive products) for A great range of Citroen/Pug sensors, EGR, and the dreaded crankshaft pulley alternative. He Was very helpful with my questions which helped to confirm my own diagnosis.
Any Chance A moderator can re mark this as unsolved??
Well that was a waste of time after 1 day back to as was before wandering all over jerky throttle response. I noticed that when at a standstill & the speedo needle moving if I increased the rev's the speedo followed. Also as mentioned by modmytop, when the speedo went dead got better throttle response. I was thinking if I could disable the speedo & use a gps type for around £50.00 that may solve things. Can anyone shed any more light on this? I hate electrical problems:censored::censored:
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