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Electrical Problem With Grounding

  • Thread starter Thread starter Luis911
  • Start date Start date Oct 14, 2013

Luis911

Member
Nov 9, 2005
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0
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Mexico City
Oct 14, 2013
#1
  • Oct 14, 2013
  • #1
When I adjust the TPS sensor, the voltage should be between .97 and .98, making the measurement from the TPS sensor wires, the voltage is 0.85, but if I measure using a sensor cable and ground (for example intake), the measurement is 1.10 (on the website of latemodelrestoration.com, and measure it View: http://www.youtube.com/watch?v=HUwr0g5Qn7s&feature=player_embedded
# t = 10), which is the correct way to measure? or I have a problem with ground?, because the measure between the negative battery and the connector 46 is 5 ohms and here mentioned it had to be equal or less than 2 ohms.
It can make a bridge between the negative battery and the black wire TPS sensor?
 

liljoe07

5 Year Member
Feb 18, 2009
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Cartersville,Ga
Oct 14, 2013
#2
  • Oct 14, 2013
  • #2
You use the TPS sensor wires. You dont need to be exact. .85v is fine.
 

Luis911

Member
Nov 9, 2005
114
0
17
Mexico City
Oct 14, 2013
#3
  • Oct 14, 2013
  • #3
thanks for the reply, and referring to the resistance between ground and battery negative which should be the right value?
 

jrichker

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Oct 15, 2013
#4
  • Oct 15, 2013
  • #4
You cannot measure resistance in a circuit that has power turned on. In order to get correct resistance measurements, you must disconnect either the positive or negative battery cable. The small voltage drop between the battery post and the device under test will cause incorrect resistance readings.
 

Mustang5L5

That is…until I whipped out my Bissell
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Feb 18, 2001
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Oct 16, 2013
#5
  • Oct 16, 2013
  • #5
Anything between 0.5 and 1.1v is fine for the TPS. Car will take this as baseline voltage and apply a set value to determine wot. Is the TPS is not in this range, you get a code. No code...no issue, move on

http://www.stangnet.com/mustang-forums/threads/adjusting-your-tps-to-0-98v-is-not-necessary.825424/
 
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