Tested tps with multimeter according to these instructions....

[jimdigs]

http://www.ehow.com/how_5832553_check-throttle-position-sensor.html

When I place the probes on the tps (throttle position sensor) I get a reading of 0.00 but when I open up the throttle by hand the reading goes instantly to 1. on the display. I have the ohm setting at 20k per the instructions am I doing something wrong or is the sensor bad? Don't forget, I'm new to using the multimeter but I do know that I have everything set right with the multimeter, probes are plugged into the com and volts and it is set to 20k ohms. Any help will be appreciated. Thanks, Jim

[bhearts]

What style of maf is it. Sweep or switch?

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[Team Lightning]

My Understanding is that a festiva tps is like an on-off switch instead of a variable resistant. I have not checked for myself by this is what I was told by friends who mod Festivas.

[dalebwilson]

Jim:

In short, the TPS ensures there is continuity across the 3 pins in various throttle positions. Touch your 2 leads together with the multi-meter set to ohms. That will give you an indication of what "continuity" looks like on your meter. Don't be too concerned of the actual number. If your meter does not react similarly to just touching the leads together...there is no continuity on the sensor in that position. The 3 positions of testing are:

-Idle
-Throttle slightly open
-Throttle wide open
TPS.jpg
The attached diagram will help you and indicates where the continuity should and should not be. Unplug the TPS connector by gently prying the paper clip type fastener loose. You will need a feeler gauge, phillips screwdriver and multi-meter. If your TPS does not read correctly, loosen the 2 screws on the TPS and rotate to adjust. Respond back if you need more help.

[jimdigs]

Jim:

In short, the TPS ensures there is continuity across the 3 pins in various throttle positions. Touch your 2 leads together with the multi-meter set to ohms. That will give you an indication of what "continuity" looks like on your meter. Don't be too concerned of the actual number. If your meter does not react similarly to just touching the leads together...there is no continuity on the sensor in that position. The 3 positions of testing are:

-Idle
-Throttle slightly open
-Throttle wide open
[ATTACH=CONFIG]15243[/ATTACH]
The attached diagram will help you and indicates where the continuity should and should not be. Unplug the TPS connector by gently prying the paper clip type fastener loose. You will need a feeler gauge, phillips screwdriver and multi-meter. If your TPS does not read correctly, loosen the 2 screws on the TPS and rotate to adjust. Respond back if you need more help.

I have continuity when I place the probe on the tps. It beeps, so what your saying is that it should continue to beep throughout the opening of the throttle? Is that how I test it? Thanks for the input.

[dalebwilson]

If the test is done correctly as described, you should here a beep at throttle closed, a beep at throttle slightly open and one more at wide open. Remember you have to move your leads to different pins during the test.


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[jimdigs]

What style of maf is it. Sweep or switch?

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I assume you are talking about the multimeter, its a switch, as far as I know. Unless you really mean the MAF sensor, if that is the case I don't know which it is.

[jimdigs]

If the test is done correctly as described, you should here a beep at throttle closed, a beep at throttle slightly open and one more at wide open. Remember you have to move your leads to different pins during the test.


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Oh, I didn't know I had to move the probes around, I'll just have to keep moving the probes around until I hear the beep in each position of the throttle. Thanks, I'll go try this. I guess the instructions that I have a link to in my original post don't work on the festiva.

[sketchman]

I think he means pot or switch TPS. The pot sweeps through a gradual change.

[dalebwilson]

Are you checking the TPS or VAF?


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[jimdigs]

Are you checking the TPS or VAF?


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I'm trying to check the TPS.

[dalebwilson]

Ok. Follow the diagram I posted and make sure your multi meter probes are on the correct TPS pins in the correct throttle position. It will work.


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[jimdigs]

Ok. Follow the diagram I posted and make sure your multi meter probes are on the correct TPS pins in the correct throttle position. It will work.


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I'll go dink around with it right now. I'll let ya know what happened.

[jimdigs]

Ok, so I put the probes on the bottom and middle sensor tabs and I get a beep. I then open the throttle all the way and wedge a screw driver behind it to hold it in that position and probe every tab on the sensor and cannot get a beep no matter where I place the probes. Only thing I can think is either the sensor is bad or do I have to have the key in the on position when doing this?

[dalebwilson]

Your TPS is out of adjustment. Loosen the 2 screws and rotate the TPS until your meter beeps in all 3 positions. You should have the connector unplugged and the key off. Test the TPS and not the supply wires.


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