D-Jet question - throttle switch

[DJSimca]

Does anyone know how to adjust the throttle switch on a D-Jet setup without having a Bosch tester at hand?

 

[Malc]

You will need a multimeter for measuring resistance etc.
The throttle switch only has 3 working positions, idle, part throttle and full throttle.
The throttle switch has 3 terminals the centre one [18] is common.
The upper one, terminal 2 is for the idle position.
The lower one, terminal 3 is for full throttle.

Throttle closed (at the idle position) 18 and 2 are connected
Throttle fully open 18 and 3 are connected.
Throttle part open none connected.

Adjust the switch as required, if that doesn't work then it may be broken or the mechanical setup of the throttle butterfly need setting properly.
HTH
Malc

 

[bengal taiga]

No special instruments required.

:?

 

[bengal taiga]

:roll:

 

[AussieE9]

D-Jet settings

I don't mean to flood you with information ..but check out these links.
You will find detailed info about D-jet and settings

http://members.rennlist.com/pbanders/djetparts.htm#troubleshoot http://www.bmwcsregistry.org/Technical/D-jet.html

I hope these URL links work..otherwise just type them in

Cheers
Bob

 

[AussieE9]

Try again and get it right!

Here is another attempt at the hyperlinks

http://www.bmwcsregistry.org/Technical/D-jet.html

http://members.rennlist.com/pbanders/djetparts.htm#troubleshoot

Cheers
Bob

 

[AussieE9]

More D-jet throttle switch

Here is a good set of photos and instructions on how to clean the D-jet throttle switch.
(It comes fom a V12 Jaguar site) .. but the switch is still D-jet

http://www.efsowell.us/ed/jag/fuelingsys/throttleswitch/throttleSwitch.pdf

Bob

 

[DJSimca]

You will need a multimeter for measuring resistance etc.
The throttle switch only has 3 working positions, idle, part throttle and full throttle.
The throttle switch has 3 terminals the centre one [18] is common.
The upper one, terminal 2 is for the idle position.
The lower one, terminal 3 is for full throttle.

Throttle closed (at the idle position) 18 and 2 are connected
Throttle fully open 18 and 3 are connected.
Throttle part open none connected.

Adjust the switch as required, if that doesn't work then it may be broken or the mechanical setup of the throttle butterfly need setting properly.
HTH
Malc

Thanks for this Malc ... unfortunately I still can't figure it out

On my throttle switch there are 4 connectors with these numbers (bottom to top)
9 -- 20 -- 12/14 -- 17

How does that correspond to your instructions above?

Cheers

 

[Malc]

Sorry, I was just "copying" the instructions from the manual

This wiring diagram may help

As you can see one wire is ground 45.
9 ,20 and 17 go back to the ECU
However your car might be different and so mucking about maybe required
Basically the switch should tell the ECU when the throttle is closed and when it is fully open. in between the pressure sensor takes care of the injection.

Malc

 

[gazzol]

If you are struggling with the above answers and are no good with a multimeter or any other type of tester for that matter then try the following: Stick your ear next to the throttle switch then very gently push the throttle open. As soon as the throttle starts to move you should hear the contact inside the switch click. If the click occurs way after the throttle starts to open you need to slacken the two screws so thst you can move the switch without it being loose, then adjust the switch till its in the correct position. If you can't hear a click no matter where you position the switch then its foobar'd.
Warning: Doing the above correctly doesn't garentee that the switch works only that it is set correctly. If you need to know that then you'll need a multimeter :roll: