Cross reference or source for Bosch 0 280 120 313 Throttle Position Sensor

[Mrbmist]

Anyone know a cross reference or a source for a Bosch 0 280 120 313 Throttle Position Sensor.

It's for my 1986 Lotus Turbo Esprit HCI

[Tony K]

This is just from a Google search, but it looks promising:

 

http://www.yoyopart.com/oem/4296515/bosch-0280120313.html#application

 

[Mrbmist]

Thank you, I've posted there a few weeks ago and haven't received a response yet.

[Andyww]

If this is from a K-Jet system its likely not a "real" throttle position sensor but a simple switch. There is a micro-switch inside the casing which can be replaced.

 

Not sure about US cars though, might use a different system.

[Mrbmist]

@Andyww-

Yes it's a K-Jet system. Continuity at idle, then break for 30°, and then Continuity to WOT. So I believe it is more of a switch. I will see if I can open the casing and see if I can repair it while I search for a replacement. Can't hurt its already not working. I will repost with what I find...

[Mesprit87]

Let us know what you find, pictures would be nice too!

[Mrbmist]

You bet. I'm still on travel for another week but will post soonest.

[Mrbmist]

Following up on this post.

I was able to open the case of the Throttle position sensor and replace the switch inside, (lower right little white rectangle). I attached a picture of the internals of the switch. The internals are pretty much the same on this style of Bosch style Throttle position sensors. I was able to use a switch from a Fiat unit I had on hand. Works perfect. Thanks for the suggestion.

Note: The Lotus Throttle position sensor / axis right-hand turning... The Fiat and other Bosch Models are axis left-hand turning.

Also I created a test plug using an old sensor plug (depicted). Makes testing much easier.

Edited April 16, 2015 by Mrbmist

[Mesprit87]

Good man!

Thank for the pictures, where did you get the switch?

Luc

[Andyww]

These are standard microswitches available from RS components etc.

[MrDangerUS]

This Throttle position sensor is used/listed for:

ALFA ROMEO LANCIA SAAB 1.6-3.0L 1977-1998