been trying to figure out why my idle is so bad. think its my o2's but decided to check my tps voltage. i found that it was at .92 volts. tried 3 times to get the voltage to .98 but every time i tightened the bolts it moved and would go above 1v. when i loosened the bolts and tried to get the voltage down it wouldnt go. i pulled the tps sensor off the tb and it was reading 1.05v wtf? then it slowly goes up to 1.08 and stops and thats with the tps not connected to the tb. tried putting it back on the tb and that didnt work. tired putting a screw driver into the tps to see if i can push the sensor and get a lower voltage and that didnt work. is my tps broken? also, my wot reading is about 6.5v thought it was supposed to be 5v. how much is a new tps sensor and do local shops carry them or only Ford?
tps voltage is acting strange
- Thread starter luckythirteen13
- Start date
just went outside. the car had been off for about 10minutes. check the tps (still disconnected from the tb) and it read .88v as soon as i touched it, voltage went up to 1.5v i bolted it down and again i wouldnt go below 1.05v took the tps off the tb and again went to 1.05v then slowly went up to 1.08
Though we are not there with you to see your testing, the values you are seeing sound erratic.
I would replace the TPS (parts store versions are not expensive; dont know about Ford's version).
Good luck.
I would replace the TPS (parts store versions are not expensive; dont know about Ford's version).
Good luck.
Make sure the batteries in your DVM are good. Also, only use the black/white wire for ground when adjusting the TPS.
With the ignition switch off, check the resistance between the black/wihite wire and the battery negative terminal. You should see less than 1.5 ohms.
With the ignition switch off, check the resistance between the black/wihite wire and the battery negative terminal. You should see less than 1.5 ohms.
If your rear mounted battery was done correctly, it will not cause problems with the resistance for the computer ground. The computer has its own dedicated power ground that comes off the ground pigtail on the battery ground wire. Due to it's proximity to the battery, it may become corroded by acid fumes from the battery. It is a black cylinder about 2 1/2" long by 1" diameter with a black/lt green wire.You'll find it up next to the starter solenoid where the wire goes into the wiring harnessluckythirteen13 said:
More than 1.5 ohms means either the wiring is bad or the computer has burned up the connection between pins 46 and 40/60 inside the computer.
Similar threads
