TPS: how low is too low?
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Legend
Joined: Feb 2005
Posts: 8,058
Likes: 183
From: Fort Worth, TX
TPS: how low is too low?
It was replaced when I replaced my failed PCM...but numbers aren't adding up.
closed:
5428 ohms total
4875 ohms, volt to tap
894 ohms tap to ground
0.725 volts
open:
1570 ohms volt to tap
4183 ohms tap to ground
3.80 volts
========
My first impression: Where did 341 ohms disappear to???? (5769 to 5428)
Second impression: Isn't WOT about 1 volt too low??
5.1V = 0.725 * (R2/(R1+R2))
894 / (894 + 4875) = 0.155
894 / 5428 = 0.164
.725 / 5.1 = 0.142
------------------
5.1V = 3.80 * (R2/(R1+R2))
4183 / (4183 + 1570) = 0.727
4183 / 5428 = 0.770
3.8/5.1 = 0.745
closed:
5428 ohms total
4875 ohms, volt to tap
894 ohms tap to ground
0.725 volts
open:
1570 ohms volt to tap
4183 ohms tap to ground
3.80 volts
========
My first impression: Where did 341 ohms disappear to???? (5769 to 5428)
Second impression: Isn't WOT about 1 volt too low??
5.1V = 0.725 * (R2/(R1+R2))
894 / (894 + 4875) = 0.155
894 / 5428 = 0.164
.725 / 5.1 = 0.142
------------------
5.1V = 3.80 * (R2/(R1+R2))
4183 / (4183 + 1570) = 0.727
4183 / 5428 = 0.770
3.8/5.1 = 0.745
