Throttle Position Sensor location

Talk about the 406's electrical system, what wires do what, how to add extra functionality, etc.

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Luke78
Newbie
Posts: 8
Joined: Mon Mar 29, 2021 5:54 pm

Throttle Position Sensor location

Post by Luke78 »

Hello All-

I have a 1998 406 GLX 2.0 ltr Petrol auto. (Yes.. I know... :mrgreen: :shock:)

Live data recorded by my local diagnostic bod tells us that the car thinks the throttle pedal is permanently at 81% position which is causing the AL4 auto box to behave inappropriately (not changing when it should, flashing warning lights, won't kick down, reluctant to change in to top gear).

I am told it is possibly a Throttle Position Sensor issue.
The tech chap can't remember if there is just one in the throttle body, or whether there may be another in line in the throttle cable somewhere.

Can anyone direct me as to where I can find the Throttle position sensor or sensors?

I have tried searching "Throttle Position Sensor" on this forum and the amount of results mentioning them is rather overwhelming!

Happy to be directed to an existing thread if anyone knows of one.
1998 GLX Saloon 2.0 petrol auto
2000 90 HDI Estate
2000 Ford Escort 55 van
Wul
1.8 8v
Posts: 49
Joined: Fri Jan 10, 2020 11:47 am
Location: Bandung, Indonesia

Re: Throttle Position Sensor location

Post by Wul »

It's located just opposite of the throttle cable pulley thing (I don't know what it's called), at the bottom of throttle body.

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2001 406 D9 2.0i 16V 135 - planning to use it for at least 6 more years
1998 306 N3 1.8i 8V 103 - has been asleep for 8 years now
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