Adjusting a TPS by hand?
06-20-12, 10:47 AM
#1
Driver
Thread Starter
Adjusting a TPS by hand?
I currently don't have a ohmeter to do a detailed adjustment on the new TPS I am going to put in in hopes of finally resolving my "Stuttering/Hicupping" issue.
I am wondering if there was a way to do this by "feel" to get by until I can do a detailed adjustment?
Like loosen screws with car running and slowly twist it till it revs/dies/idles better/worse ?
I read on another forum that I could just set it as close to center as I can and then take it out for a drive and stomp on the gas "Italian Tune Up" style and the ECU would adjust to the TPS but that didn't sound right.
I am wondering if there was a way to do this by "feel" to get by until I can do a detailed adjustment?
Like loosen screws with car running and slowly twist it till it revs/dies/idles better/worse ?
I read on another forum that I could just set it as close to center as I can and then take it out for a drive and stomp on the gas "Italian Tune Up" style and the ECU would adjust to the TPS but that didn't sound right.
06-20-12, 11:47 AM
#2
It can be done by feel, but its not the best way to do it.
When i installed the aristo ecu and the stock TPS, I backed the tps off completely (turn in same direction as throttle blade).
You want to turn it in the other direction now so it is at least slightly engaged. somewhere around there it will start to idle good, then a little more turning it will idle badly.
So once you get there you sort of back it off slowly till it idles fine again (you want it just before it idles badly, but not too close).
from here you can make very small adjustments to make it rev smooth when you crack the throttle blade, if the rpm's dip for a second when you crack the throttle blade, your not breaking idl soon enough, so rotate more against the throttle blade, till you are right behind that point.
most of the time if you pass it, and then back it up a notch you should be pretty close. unless my tps is "special".
When i installed the aristo ecu and the stock TPS, I backed the tps off completely (turn in same direction as throttle blade).
You want to turn it in the other direction now so it is at least slightly engaged. somewhere around there it will start to idle good, then a little more turning it will idle badly.
So once you get there you sort of back it off slowly till it idles fine again (you want it just before it idles badly, but not too close).
from here you can make very small adjustments to make it rev smooth when you crack the throttle blade, if the rpm's dip for a second when you crack the throttle blade, your not breaking idl soon enough, so rotate more against the throttle blade, till you are right behind that point.
most of the time if you pass it, and then back it up a notch you should be pretty close. unless my tps is "special".
06-21-12, 03:05 PM
#3
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I read somewhere once .65-.70 on an ohms meter is where you want it I forgot what two wires on the gps to touch tho..
My tps was so off I adjusted it to those specs and its perfect throttle response now
GL
My tps was so off I adjusted it to those specs and its perfect throttle response now
GL
03-22-20, 11:44 AM
#5
It can be done by feel, but its not the best way to do it.
When i installed the aristo ecu and the stock TPS, I backed the tps off completely (turn in same direction as throttle blade).
You want to turn it in the other direction now so it is at least slightly engaged. somewhere around there it will start to idle good, then a little more turning it will idle badly.
So once you get there you sort of back it off slowly till it idles fine again (you want it just before it idles badly, but not too close).
from here you can make very small adjustments to make it rev smooth when you crack the throttle blade, if the rpm's dip for a second when you crack the throttle blade, your not breaking idl soon enough, so rotate more against the throttle blade, till you are right behind that point.
most of the time if you pass it, and then back it up a notch you should be pretty close. unless my tps is "special".
When i installed the aristo ecu and the stock TPS, I backed the tps off completely (turn in same direction as throttle blade).
You want to turn it in the other direction now so it is at least slightly engaged. somewhere around there it will start to idle good, then a little more turning it will idle badly.
So once you get there you sort of back it off slowly till it idles fine again (you want it just before it idles badly, but not too close).
from here you can make very small adjustments to make it rev smooth when you crack the throttle blade, if the rpm's dip for a second when you crack the throttle blade, your not breaking idl soon enough, so rotate more against the throttle blade, till you are right behind that point.
most of the time if you pass it, and then back it up a notch you should be pretty close. unless my tps is "special".
03-23-20, 06:01 AM
#6
Pole Position
Yep, only do this with the car completely warm. It helped me a lot, and if you give it a shot, its fairly intuitive if you follow Ali's directions. I need to finalize mine with a voltmeter soon too, however, with Ali's instructions I got my car driving 100% better simply doing this by feel.
03-23-20, 07:29 AM
#7
Yep, only do this with the car completely warm. It helped me a lot, and if you give it a shot, its fairly intuitive if you follow Ali's directions. I need to finalize mine with a voltmeter soon too, however, with Ali's instructions I got my car driving 100% better simply doing this by feel.
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