How to test your Thottle Position sensor (TPS sensor)

Anthony @ DIYautotech showing you how to check your throttle position sensor for source voltage, signal voltage, and WOP voltage using a Fluke 87 digital multi meter.

Category:

Autos & Vehicles

Tags:

• throttle
• position
• sensor
• throttle position sensor
• TPS
• tps
• how to
• DIYautotech

[lnorton89]

shit video no where do you explain WHERE you are putting multimeter leads.

[DIYautotech]

@lnorton89 At :40 seconds I explain what all three wires are (on this specific application) At :58 seconds I explain what wires are used for reference voltage. At 1:15 seconds I explain how to check signal voltage. At 1:48 I explain what wires to use for a scale test.

Before you talk crap, make sure you actually WATCH the videos. All information was present, stop smoking pot & playing with your dick while watching my videos.

[Kobradude]

@fivefortyeye540i 5v is reference voltage , it's the same for most passenger vehicles . reference voltage is the amount of power given to a component to operate.

[spelunkerd]

Nice demo Anthony. I guess I missed this one when it was first posted.

[DIYautotech]

@rachmaniralf You are correct that the varying resistance will cause a voltage change that is linearly proportional, but the DVOM or DMM will not be quick enough to show this response. This is why I'm telling you that a scope is needed for intermittent diagnosis. It would pick those voltage changes up.

Knowledge is useful my friend, but practice is even better. Go try it on a vehicle and you will understand.

[fivefortyeye540i]

What is the definition reference voltage? What is reference voltage?

[rachmaniralf]

@TheJeepWheeler touche

[TheJeepWheeler]

@rachmaniralf

You can't even spell Genius...

[BR549guy]

@frankfordbully Would a bad TPS explain a "no-code" and "NO CEL" acceleration stumble on my 2002 Mazda B2300? It was running like a Swiss watch and getting 30+mpg. All of a sudden, it started stumbling under anything heavier than a gentle throttle. Other than that, it runs smooth and idles perfectly. Plugs and wires replaced along with A/filter, and I cleaned the MAF sensor.

[jpsousa4]

My car has been acting funny lately, and there was a code in the car mentioning a TPS.

A friend and I performed this test to see if there were any jumps in the sensor, we didn't find any jumps, however, we did find that the sensor itself went from about .35 volts to 4.5ish volts. Is .35 volts too low an idle voltage for my 91 buick regal?

[DIYautotech]

@rachmaniralf Very good reply, thanks rachmaniralf. I couldn't have put it better myself!

[rachmaniralf]

@texasrecyclers Hey genious, have you heard of Ohm's "Law"? (quotes are there for a reason). Voltage=current times resistance (ohms). So a varying resistance WILL cause a voltage change that is linearly proportional to this change. While it is usually common practice to use an ohmmeter, its not BS to use a voltmeter