TDC Sensor Replacement (with pictures!) - Page 28 - Renault Forums :: Independent Renault forum

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post #136 of 308 (permalink) Old 25th July 2008
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im now driving a 1.4 04 scenic..the problem i have is on cold mornings it will stall straight away about 4 0r 5 times before running ok...on warm days no probs.....when sitting at traffic lights even when warmed up it feels like it wants to stall...and it has done a few times..when driving im not losing power so ruled out the coils ...my m8 in the garage put it on his machine and it come up oxygen sensor in poor condition but hasnt showed up since but i still have the same prolem...where is the oxygen sensor located and how many...some one told me you have two....sorry about the long winded post ...any help much appreciated.............still the best forum
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post #137 of 308 (permalink) Old 26th July 2008
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A decent diagnostics machine should be able to detect which sensor is duff assuming there are 2 fitted that is.
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post #138 of 308 (permalink) Old 30th July 2008
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Just thought I would outline how I got my TDC sensor out of its fitting.

I have 2 Scenics and the older one has a TDC sensor in the position shown in the excellent pics at the beginning of this post. It looks very accessible.

BUT the newer Scenic is another thing.
Itís a 1.6 Fidji 2002 and an auto as well. Its crowded on top of the gearbox!

The sensor is located further into the engine than shown in the pics. On top of that is a wiring loom that gets in the way of lifting it out.
Heres how I did it-
1. Lift off the air intake black box using the rubber band that holds the front end.
2. Remove the bracket that holds the air intake mounting (2 bolts). (front of vehicle)
3. Undo the rear bracket that holds a plug and tubing to the rear of the engine block. (1 bolt). Move it out of the way.
4. Remove the 2 bolts that holds the wiring loom plastic cradle above the sensor.
5. Pull as many pipes and wires away from the sensor area as you can and tie back with a softish rope. Donít pull them off though.
6. Undo the sensor bolts and remove the bolts (2). Sensor is now loose.
7. With some room available its now possible to move the wiring loom rearwards to ease the sensor behind the loom and out to the rear.
8. Unclip plug from the sensor.
9. Replacement is the reverse procedure.
Easy peasy.
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post #139 of 308 (permalink) Old 30th July 2008
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As a PS to my post.
I cleaned up the old sensor tip but to be honest it wasn't that dirty. We shall see if it improves starting.

My local Renault dealer quoted £50 for a new sensor and the required new plug and short loom.

Anyone know of any parts suppliers doing it cheaper?

Most suppliers sell the sensor but not the new plug and loom kit. Is it really required?

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post #140 of 308 (permalink) Old 30th July 2008
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Last I knew (which was a while back now if I'm honest) the TDC sensor is available from many motor factors, my local one charged about £20 IIRC, but the short loom is only available from Renault direct

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