TPS experiment
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Joined: Oct 2003
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Originally Posted by imlachg1
This is probally the best info I hav read
If the TPS is set negative (below 0.45V at idle) when you open the throttle slightly the ECU will think the throttle is not open, apply the fuel over-run routines and cut fuel at 1400 or 1800 rpm. This will often cause the revs to cycle between about 800 and 1800 rpm. Also the car will be jerky when driving around at low speed.
If the TPS is set positive (over 0.45V) then the fuel over-run routines won't work, and also the ECU will not run the correct idle routines to keep the idle steady. It's better to have the TPS adjusted slightly negative, but setting it to 0% if fairly easy with datalogging. Otherwise aim for 0.45V.
If the TPS is set negative (below 0.45V at idle) when you open the throttle slightly the ECU will think the throttle is not open, apply the fuel over-run routines and cut fuel at 1400 or 1800 rpm. This will often cause the revs to cycle between about 800 and 1800 rpm. Also the car will be jerky when driving around at low speed.
If the TPS is set positive (over 0.45V) then the fuel over-run routines won't work, and also the ECU will not run the correct idle routines to keep the idle steady. It's better to have the TPS adjusted slightly negative, but setting it to 0% if fairly easy with datalogging. Otherwise aim for 0.45V.
HAHA beat you to it!!! read above under hondata
Senior Member
Joined: Apr 2003
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From: Indiana
From: http://www.integra.orcon.net.nz/tps
You need to connect the voltmeter to the ground wire and the other one to the fluctuating wire by exposing some of the wires. Loosen the screws and shift the TPS around until it gives a voltage of 0.45 Volts when the throttle is CLOSED. It doesn't matter what it says at open throttle.
You need to connect the voltmeter to the ground wire and the other one to the fluctuating wire by exposing some of the wires. Loosen the screws and shift the TPS around until it gives a voltage of 0.45 Volts when the throttle is CLOSED. It doesn't matter what it says at open throttle.
Thread Starter
Driver
Joined: Oct 2003
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Originally Posted by imlachg1
From: http://www.integra.orcon.net.nz/tps
You need to connect the voltmeter to the ground wire and the other one to the fluctuating wire by exposing some of the wires. Loosen the screws and shift the TPS around until it gives a voltage of 0.45 Volts when the throttle is CLOSED. It doesn't matter what it says at open throttle.
You need to connect the voltmeter to the ground wire and the other one to the fluctuating wire by exposing some of the wires. Loosen the screws and shift the TPS around until it gives a voltage of 0.45 Volts when the throttle is CLOSED. It doesn't matter what it says at open throttle.
So OG it hurts.
Joined: Mar 1999
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From: VA
Originally Posted by imlachg1
From: http://www.integra.orcon.net.nz/tps
You need to connect the voltmeter to the ground wire and the other one to the fluctuating wire by exposing some of the wires. Loosen the screws and shift the TPS around until it gives a voltage of 0.45 Volts when the throttle is CLOSED. It doesn't matter what it says at open throttle.
You need to connect the voltmeter to the ground wire and the other one to the fluctuating wire by exposing some of the wires. Loosen the screws and shift the TPS around until it gives a voltage of 0.45 Volts when the throttle is CLOSED. It doesn't matter what it says at open throttle.
Well. It's suppose to read 4.5 volts at WOT. But if you get .45 at closed, it should hit 4.5 automatically. I always read my reading at WOT to be sure, and it hit 4.5xxx. If it doesn't show 4.5 at WOT, but it shows .45 at closed, there could be a problem with the TPS.
Rotorphile.
Joined: Mar 2002
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From: Richmond, VA
Originally Posted by tommytoes
HA!..sup man? does your rx7 even have a tps??
As mentioned before, anything less then spec will make the car bog, any more and you're wasting gas. Due to the shear volume of places that say .45, I'd go with that, but .5 does make more sense to me.
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Originally Posted by Kai
Of course they do, at least all 84-85 GSL-SE's and all 86+ RX-7s. Spec on them is 1-4.5+, but that's not important here.
As mentioned before, anything less then spec will make the car bog, any more and you're wasting gas. Due to the shear volume of places that say .45, I'd go with that, but .5 does make more sense to me.
As mentioned before, anything less then spec will make the car bog, any more and you're wasting gas. Due to the shear volume of places that say .45, I'd go with that, but .5 does make more sense to me.
Yeah I just did a painful search of the helms pdf from the online resource sticky and sure enough............... .5v at closed to 4.5 at wot......
So I've decided to just go with what the hell works......
**.5v it is!!** Ohh well so much for trying to find fact amongst all the rumors...But I guess in some instances .45 would be right and in others .5 is the way....... hmmm a slightly disappointing conclusion but at least now I know what I'll have mine set at......
Fark it all :fawk:
OOh well thanks 2 all :thumbup:
I wouldn't worry about setting it a little high, the worst it'll do is waste a little gas.
