Do new TPS's require adjustment?

[zig553]

I just bought a bunch of new parts for my Engine and was just curious about the Throttle Position Switch? Does it require adjustment even though its brand new? Or should it be just plug and play?

[IRON-E]

Should be plug & play, I never did anything to my new one.

[mccor023]

The switch itself does not adjustment, but you do need to align it in the TB properly. You can test continuity with a multi meter, or when you barely open the throttle you will hear a light click.

[jeffnhiscars]

The switch itself does not adjustment, but you do need to align it in the TB properly. You can test continuity with a multi meter, or when you barely open the throttle you will hear a light click.

This.

I put a .003 feeler gauge between the butterfly and the TB to insure that the switch has continuity at idle or it is useless. Think about it. If you try to set it at precisely closed throttle and you are out .000001 your idle system will not engage. The feeler gauge gives you that margin of safety.

As for adjusting it by "click" rather than using a VOM, it clicks in both directions (opening & closing) so without the meter you do run the risk of an incorrect setting.

[jlevie]

When changing the TPS you do have to adjust it. The idle switch in the TPS should close when the throttle stop arm is 1mm off the stop screw.

[zig553]

So when it's attached to the throttle body, what should the reading on the tps be at?

[Gregs///M]

Installing a new TPS without verifying its correct operation would be foolish. You should have continuity between the left two contacts with the throttle closed. This continuity should disappear after lifting the throttle about 10% or more. Around 70% open, the two right contacts should show continuity to indicate WOT.

I believe the contacts are labeled A B C. So AB indicates closed throttle and BC indicate WOT.