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Ok firstly, this is your Throttle Position Sensor (TPS from here on in..)
What the numbers mean;
1. This wire is the power supply for the TPS, should read about 5.12V
2. This is the return wire that runs to the ECU and tells it how far down your foot is, ie, the position of the throttle..
3. Earth
4 & 5. These hold the TPS down, need to be undone only about 1 turn when adjusting
Set your voltmeter to "20V"
Ok, grab 2 pins/needles, stick one through wire 2. This will be the center wire on the plug. These pins are your way of getting a reading from the wire within, without having to cut them open
With the second, you can either stick it through wire number 3, or, just put the probe of the voltmeter on the chassis. Personally I think its better to use wire 3.
Right, with your ignition in the "ON" position, or better yet, car idling, put the + voltmeter probe on wire 2. And the negative probe on wire 3 (Or chassis..)
Take note of your reading. Ideally, you want a reading of 0.45V.
If it is higher, or lower than this, undo screws 4 & 5 just enough so the TPS will move, but stay put when you let it go. Turn the TPS either clockwise or counter-clockwise and take another reading. Turning it one way will make the voltage go up, turning it the other way will get the voltage down, I forget which is which
Experiment! You cant do any damage here!
Keep adjusting until you have your reading of 0.45V, then tighten 4 & 5 and take the reading again, to make sure it didnt move while you were tightening it
Another thing to check, try taking a reading with someone in the car with their foot to the floor. Reading should be just over 4V. If not, check for slack in the accelerator cable etc.. This needs to be over 4V for things such as flooding. When trying to start your car at WOT (Wide open throttle), ie, foot to the floor, the ECU needs to be getting a reading of 4V+ in order to go into "Clear flood mode". The ECU will severely lower, or even stop the amount of fuel being pumped into the cylinders, so that while you are turning your engine over, the excess fuel will get outta there and your car will fire up!
Setting your TPS may help with unusual idle/running issues..
Hope this helps!
BIG thanks to NZGTIR on Modifiers
Ok firstly, this is your Throttle Position Sensor (TPS from here on in..)
What the numbers mean;
1. This wire is the power supply for the TPS, should read about 5.12V
2. This is the return wire that runs to the ECU and tells it how far down your foot is, ie, the position of the throttle..
3. Earth
4 & 5. These hold the TPS down, need to be undone only about 1 turn when adjusting
Set your voltmeter to "20V"
Ok, grab 2 pins/needles, stick one through wire 2. This will be the center wire on the plug. These pins are your way of getting a reading from the wire within, without having to cut them open
With the second, you can either stick it through wire number 3, or, just put the probe of the voltmeter on the chassis. Personally I think its better to use wire 3.
Right, with your ignition in the "ON" position, or better yet, car idling, put the + voltmeter probe on wire 2. And the negative probe on wire 3 (Or chassis..)
Take note of your reading. Ideally, you want a reading of 0.45V.
If it is higher, or lower than this, undo screws 4 & 5 just enough so the TPS will move, but stay put when you let it go. Turn the TPS either clockwise or counter-clockwise and take another reading. Turning it one way will make the voltage go up, turning it the other way will get the voltage down, I forget which is which
Experiment! You cant do any damage here!
Keep adjusting until you have your reading of 0.45V, then tighten 4 & 5 and take the reading again, to make sure it didnt move while you were tightening it
Another thing to check, try taking a reading with someone in the car with their foot to the floor. Reading should be just over 4V. If not, check for slack in the accelerator cable etc.. This needs to be over 4V for things such as flooding. When trying to start your car at WOT (Wide open throttle), ie, foot to the floor, the ECU needs to be getting a reading of 4V+ in order to go into "Clear flood mode". The ECU will severely lower, or even stop the amount of fuel being pumped into the cylinders, so that while you are turning your engine over, the excess fuel will get outta there and your car will fire up!
Setting your TPS may help with unusual idle/running issues..
Hope this helps!
BIG thanks to NZGTIR on Modifiers
