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Introduction

This tutorial is made on Twingo 1 1.2 55cv

If your car has trouble starting in cold or wet weather, or tends to stall for no reason when stopped, chances are it's caused by a worn or dirty TDC sensor.

The purpose of this sensor is to determine the rate of fuel to be injected. If it is too old, it may give incorrect information to the computer and cause the engine to stop.

This tutorial shows you step-by-step how to disassemble it to replace it.

  1. 
To have more space, we start by removing the engine air filter box.

Unhook the clips that hold the two parts of the box together. There are 4 of them, one on top, one on each side, and one underneath.

Pull the front part to separate it from the back part.
    • To have more space, we start by removing the engine air filter box.

    • Unhook the clips that hold the two parts of the box together. There are 4 of them, one on top, one on each side, and one underneath.

    • Pull the front part to separate it from the back part.

    • Don't forget to disconnect the negative pole of your battery, as before any electrical work!

  2. 
Loosen the hose clamps on the two hoses connected to the box.

You can remove the air box.

You can remove the air box.
    • Loosen the hose clamps on the two hoses connected to the box.

    • You can remove the air box.

  3. 
The TDC sensor is located under this calculator.

We start by unscrewing the top bolt using a 12 key.

We start by unscrewing the top bolt using a 12 key.
    • The TDC sensor is located under this calculator.

    • We start by unscrewing the top bolt using a 12 key.

  4. 
Now unscrew the second screw, located towards the front.

Unclip the connection sockets between the sensor and the computer by sliding the assembly upwards.

Unplug the plugs carefully.
    • Now unscrew the second screw, located towards the front.

    • Unclip the connection sockets between the sensor and the computer by sliding the assembly upwards.

    • Unplug the plugs carefully.

  5. 
Compare the old and new sensors to verify that they are identical, as well as the connectors.

Replace the new sensor.

Replace the new sensor.
    • Compare the old and new sensors to verify that they are identical, as well as the connectors.

    • Replace the new sensor.

  6. 
Reposition and lightly tighten the two screws. Then tighten them one by one as much as possible.

Reconnect and clip the connectors onto their support.

Reconnect and clip the connectors onto their support.
    • Reposition and lightly tighten the two screws. Then tighten them one by one as much as possible.

    • Reconnect and clip the connectors onto their support.

  7. 
Replace the air box. Reconnect the hoses and tighten the hose clamps.

Congratulations, your TDC sensor is brand new!
    • Replace the air box. Reconnect the hoses and tighten the hose clamps.

    • Congratulations, your TDC sensor is brand new!

Conclusion

Your car starts more easily and no longer stalls!

3 other people completed this guide.

yannisb34

Member since: 7/23/18

398 Reputation

12 Guides authored

5 Comments

Excellent tutorial, almost exclusive to the first engines!

cohenfrederic - Resolved on Release Reply

Thank you very much, very good tutorial

imartpremium - Resolved on Release Reply

Thank you so much !

yannisb34 -

Very good tutorial

THANKS

louis gigan - Resolved on Release Reply

Thank you for your feedback!

yannisb34 -

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