850 TPS question.

[claymore]

Question for the electronic gurus, I have a different throttle body I want to use on the car, the volvo 850 tps fits and bolts up perfectly, but it's reading the opposite way around, in other words when the Volvo butterfly is shut, my new throttle body is wide open. how can I swap the signal to the ecu, would it be as simple as reversing a couple of wires?

[MoleT-5R]

Question for the electronic gurus, I have a different throttle body I want to use on the car, the volvo 850 tps fits and bolts up perfectly, but it's reading the opposite way around, in other words when the Volvo butterfly is shut, my new throttle body is wide open. how can I swap the signal to the ecu, would it be as simple as reversing a couple of wires?

try measuring it with a multimeter to see what you get normally and then try different combinations to see if you can get the reverse of the previous measurements

[claymore]

try measuring it with a multimeter to see what you get normally and then try different combinations to see if you can get the reverse of the previous measurements

Already tried that mate, that's how I know it reads opposite.

[MoleT-5R]

is this for the t-10 or the T-5R ????

[oblark]

Question for the electronic gurus, I have a different throttle body I want to use on the car, the volvo 850 tps fits and bolts up perfectly, but it's reading the opposite way around, in other words when the Volvo butterfly is shut, my new throttle body is wide open. how can I swap the signal to the ecu, would it be as simple as reversing a couple of wires?

If when the volvo throttle is shut you have a resistancce of 1.03 ohms and at fully open 1.9 ohms
And the other one is the other way around swapping the wires over will do nothing.

The throttle switch will need to be removed and refitted 180 degrees to get the open and closed resistance the same as the volvo TB ( I think )

[claymore]

If when the volvo throttle is shut you have a resistancce of 1.03 ohms and at fully open 1.9 ohms
And the other one is the other way around swapping the wires over will do nothing.

The throttle switch will need to be removed and refitted 180 degrees to get the open and closed resistance the same as the volvo TB ( I think )

Can't see how the tps can be rotated by 180% as there is a flat on the shaft so it can only go one way, so the only way I can see to use this TB is somehow modify the signal from the tps.

[claymore]

is this for the t-10 or the T-5R ????

This is for the T-10's new intake manifold.

[MoleT-5R]

This is for the T-10's new intake manifold.

could the values be adapted in TT or have you bined off turbotuner

or could the shaft be removed completely from the tb and rotated 180 degs and then re-assembled so the flat is the other way around, think I did something similar to my 3" tb

[claymore]

could the values be adapted in TT or have you bined off turbotuner

or could the shaft be removed completely from the tb and rotated 180 degs and then re-assembled so the flat is the other way around, think I did something similar to my 3" tb

The butterfly rotates clockwise on the Volvo TB and anticlockwise on the other one.

[MoleT-5R]

I think this was why my butterfly is fitted with the shaft the wrong way around (screw ends showing not the heads as normal) I did have to turn the butterfly around else it won't shut if I recall

[MoleT-5R]

studying the old pic's further, maybe a hybrid tb made from different parts from different std tb's till the desired result is achieved, as you can see the standard and 3" tb's have different tps mounting plate and different linkage arms, could the desired result be achieved by mixing the parts from the 2 tb's

[claymore]

I have had it confirmed that swapping the two outer wires over will sort it, apparently a common mod on the Lancias, cheers Dell, and when are you going to start posting on here, we all want to see your 850 project

[Orca2]

You might be able to remove the shaft and motor from the throttle body and put it in from the other side , this would make the butterfly work the same as your Volvo one . IE when it was turning to open it would actually close the flap.
Might not be possible to do . Just a thought .

[jamesy12345]

I have had it confirmed that swapping the two outer wires over will sort it, apparently a common mod on the Lancias, cheers Dell, and when are you going to start posting on here, we all want to see your 850 project

that is what it seemed to say on all the threads I found, never had time to reply cos was putting the bairn in his bed!!

Below someone made a circuit to invert the signal, then someone pointed out he could just swap the wires as you say

http://forum.205gtidrivers.com/index...owtopic=110033

[MoleT-5R]

I have had it confirmed that swapping the two outer wires over will sort it, apparently a common mod on the Lancias, cheers Dell, and when are you going to start posting on here, we all want to see your 850 project

sorted then and easier than stripping the tb and rebuilding it

yes it would be nice to see a build thread on Dell's 850

[claymore]

Looks like the T-10 will be sporting a nice big Fiat Coupe Turbo TB then