Can somebody look in the Chilton's manual for their 95 F-150 4.9L and help me compare the Throttle Position Sensor testing resistance values to the Haynes Manual values. Haynes says that the throttle closed resistance should be 3.0-4.0K ohms. At full open the resistance should drop to approximately 350 ohms.
I am getting close to these values but in the opposite positions. (680 ohms closed and 3,700 ohms open) I think Haynes might have it backwards. Thanks

 

chilton shows to test in voltswith minimum .34 volts to 4.84

closed should be .66 volts wide open should be 4.84

it says in the book "with ignition f. disconect the tp sensor conector. messure resistance between sensor connector terminals sig rtn and tp. if resistance matches this the sensor is ok" and the chart has what is above

 

Volts or ohms?

To the original poster - you should have replied to your original thread, not started a new one. You have a reply from Steve there which you may want to read.

 

glc: My original thread title had nothing to do with a Chilton's manual. I know when I am looking at new threads I only look at ones that interest me or that I have knowledge of. So I figured with a TPS testing title it would be a shot in the dark that somebody with a Chilton's manual would happen to be interested or be knowledgeable about TPS testing.

Losthillbilly: When it says "measure resistance between sensor connector terminals sig rtn and tp. If the resistance matches this the sensor is ok" and the chart has what is above."
If the resistance matches what? The voltage chart?
Is it saying my volts should be equal to my ohms (resistance) in each respective throttle position? Thanks for your research

 

its volts and it dont say anything about ohms in the chiltons just has volts

 

Something is wrong with Chilton's then - resistance is measured in ohms, not volts!

To the OP - I'd recommend you go back to the original thread and read what Steve posted, click on the thumbnail! I'll take the data he has long before I'd believe Haynes or Chilton.

 

Sounds good, thanks

 

yeah i thought it was wierd everything was in volts in the chiltons but my haynes is in ohms like it should be

 

BUT - if you look in the other thread, Steve says Ford says to check voltage, not resistance.