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Guest Message by DevFuse

Testing the throttle position sensor on an 1992 Legacy EJ22

Started by pvenuti , Sep 15 2010 07:09 PM

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3 replies to this topic

#1 pvenuti

USMB Regular

Members
60 posts

Beverly

Posted 15 September 2010 - 07:09 PM

Can anyone confirm for me the proper test results when testing with a meter. I connect the meter to pins 2 and 4 and with the throttle closed I have five volts. When I open the throttle it drops to .83 and that’s it all the way to full open. I was expecting to see zero or a low reading with the throttle closed and a nice even increase as it opened. Assuming I’m testing this correctly and it is bad anyone know what I should expect to pay for one and if one brand is better than another and who to buy it from.

Edited by pvenuti, 16 September 2010 - 09:11 AM.

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#2 wtdash

Subaru Nut

Members
728 posts

N. ID

Posted 16 September 2010 - 12:17 PM

Hi,
Check out this POST on Legacy Central about 1/2 way down where there are links to the FSM testing of the TPS.

Gl,
TD

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#3 pvenuti

USMB Regular

Members
60 posts

Beverly

Posted 16 September 2010 - 03:35 PM

Thanks for the link. Looks like the stuff I have in the Haynes manul. I have re read it all a few times and now feel that my original testing was wrong. I have retested and can confirm that both with power and just the ohms test the sesor is fine. So I guess it's time to start a new thread about the symptom I'm having.

Edited by pvenuti, 16 September 2010 - 04:40 PM.