How do you properly set your TPS sensor?

Discuss the RB20, RB25 and RB26 series engines.
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Eikon
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Joined: Sat Apr 24, 2004 3:20 am
Car: 71 240z, 93 Supra TT
Location: Lake Orion, MI
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I know this has been explained in the past, but I'm having trouble finding it. In fact, I know that Carl has gone through this many times.

I'm fairly sure that many of us have issues with our TPS sensors being set correctly. It comes up as a possible solution for idling problems, stalling on deceleration, etc... So this thread should be helpful for many people.

Can someone (Carl?) do a step-by-step guide on how to properly set the TPS? I think this would be very helpful... for me and others.

Also, how does this relate to the Cam Angle Sensor... can you adjust the timing with the CAS by simply rotating it clockwise or counter-clockwise? To do that do you need to reset the TPS afterwards?

Thanks!!!


gawdzilla
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Joined: Sat Sep 18, 2004 11:51 am
Car: none

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Eikon wrote:I know this has been explained in the past, but I'm having trouble finding it. In fact, I know that Carl has gone through this many times.

I'm fairly sure that many of us have issues with our TPS sensors being set correctly. It comes up as a possible solution for idling problems, stalling on deceleration, etc... So this thread should be helpful for many people.

Can someone (Carl?) do a step-by-step guide on how to properly set the TPS? I think this would be very helpful... for me and others.

Also, how does this relate to the Cam Angle Sensor... can you adjust the timing with the CAS by simply rotating it clockwise or counter-clockwise? To do that do you need to reset the TPS afterwards?

Thanks!!!
the TPS you just use a multimeter and read the voltage across it. it should be .5V at fully closed if i remember correctly. Car does NOT need to be on, its purely a potentiometer i believe. Give it ign and you should be able to see theh volts off it. Don't think it matters what the WOT voltage is, as long as the closed voltage is ~.5.

Just loosen the two slider screws so your tps can turn a bit. turn it to desired position then tighten it down.

As for the CAS, I believe the car must be on AND at the base timing. There were some steps to do this.. i think unplug IACV and some other steps, but I don't remember right now. Someone else can write that one up

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sil80hks
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Joined: Wed Feb 02, 2005 8:06 pm
Car: 91 s13 Coupe
RB26DETT
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Super old post, but have a question re this. I tested my tps voltage at closed throttle but only got around .2v - the tps was at about its center position. I had to loosen and place the tps all the way to one side to obtain around .4v at closed throttle. Is this normal or is my sensor bad?


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