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The mkiv Supra Owners Club

Fitting a throttle position sensor


Dave

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First challenge of swapping the TPS is removing the two screws that hold it in place.

If you can do this successfully without rounding them then you are off to a good start. I hate those screws with a passion.

On an NA you will need to remove the front top engine cover in order to get to the second screw of the tps.

 

The way you should install the TPS correctly is with feeler gauges and a multimeter in order to tune the location of the TPS to match the throttle plate "perfectly".

 

If you don't have the patience or tools to do this, then install the TPS, aligning the inside grooves with the two metal ends on the throttle body. Once it's on, put the screws in lightly and twist the TPS counter clickwise as far as it will go, then tighten the screws.

 

Your TPS won't be 100% where it needs to be but it will be very close, but without the correct tools it's impossible to dial it in as every TPS and TB is slightly different.

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Top Tip for undoing a f tight bottom screw: Remove the throttle body so that you can get at it properly and start the screw moving using a small pair of mole grips.

 

Edit: I had posted a How-To for TPS adjustment, but it appears that the thread I linked the photographs from has been deleted and mucked this resource up. :shrug:

 

http://www.mkivsupra.net/vbb/group.php?discussionid=190&do=discuss

Edited by David P (see edit history)
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Thanks guys got it on in the same position as the old ,I'm now waiting for my new rotor arm to arrive from whifbitz,didn't know they were closed for the holidays so won't get it till next week

 

- - - Updated - - -

 

For future reference, I have edited the above pic into the N/A How-To. :)

 

Thanks david

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What settings on the multimeter should I use ,I'm not experienced in using one of these .

 

- - - Updated - - -

 

For ease of removal next time I'd replace the screws with allen cap ones if you get the time, the screws round off like they're made of chocolate.

 

Good idea will do that

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