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Chris, Shop Foreman
Category: Jeep
Satisfied Customers: 3379
Experience:  Jeep Certified Master Tech
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98 jeep 4.0 l with p0123 codedisconnect clockspring and code

Customer Question

98 jeep 4.0 l with p0123 code
disconnect clockspring and code still sets
Submitted: 2 years ago.
Category: Jeep
Expert:  Tim Mohr replied 2 years ago.
Hi, my name is ***** ***** the code P0123, its almost always the TPS, throttle position sensor, it can also be the clockspring or the PCM, what all has been done to this?
Customer: replied 2 years ago.
Clock spring has been unplugged and no change. The 4.9volts is originating from Pcm not TPS. Just put crate motor in it. Checked wires going to clockspring for voltage and got 12v 5v and 0volts
Expert:  Tim Mohr replied 2 years ago.
Do you have the 4.9 at the TPS?
Customer: replied 2 years ago.
Yes, with TPS unplugged I have 4.9 on the reference wire and signal wire. Have hooked up 2 different computers that don't have this issue and it started right up with same problem
Expert:  Tim Mohr replied 2 years ago.
what does the TPS read when doing a sweep test?
Customer: replied 2 years ago.
4.9 constant. It is not the TPS, unplug TPS and have 4.9volts on reference and signal wires. Pin 23 on ECU is supplying 4.9 volts on the signal wire to the TPS. There is feedback from somewhere and it's not the computer
Expert:  Tim Mohr replied 2 years ago.
do you have a scanner with datstream?