Rushin
NAXJA Forum User
- Location
- Minneapolis, MN
Hey Eveybody. I just got a very nice 1990 2rd Xj. Its only got 145k on it and is in amazing shape without a single spec of rust.
But it has a few issues. One of them is I just cant adjust the TPS. I have spend days reading about the process of adjusting the TPS.
It all started with a strange stutter and miss fire at 2000 rpm when very light on the throttle.
I got a new TPS thinking that this could be a good way to start. So i hooked it all up and got a voltmeter to test it out. I started with mesuring the voltage at terminal A and B on the squire plug. It sais that i should get 5V i got about 4.5V which I was told is ok. After that i mesured the voltage between B and C and got .024v which is really should be .83. TPS is new and i have no idea what the hell is wrong.
When i move the arm on TPS i can get the voltage to go down from .024 to 0.
I have read that adding a dedicated ground to sensors ground terminal might help. I did that and the voltage jumped right to .79 but when i moved the arm on TPS the voltage just stayed at .79. I tried to drive the car like that and it would not shift out of frist gear.
What is going on? I really need your help guys. I always work on my cars and have built my turbo miata from gound up and now i feel like just bringing this jeep to a shop. I really dont want to do that.
Here is a little pic of my XJ. As soon as i fix this issue with TPS i will be installing a pacesetter header and borla exhaust.
But it has a few issues. One of them is I just cant adjust the TPS. I have spend days reading about the process of adjusting the TPS.
It all started with a strange stutter and miss fire at 2000 rpm when very light on the throttle.
I got a new TPS thinking that this could be a good way to start. So i hooked it all up and got a voltmeter to test it out. I started with mesuring the voltage at terminal A and B on the squire plug. It sais that i should get 5V i got about 4.5V which I was told is ok. After that i mesured the voltage between B and C and got .024v which is really should be .83. TPS is new and i have no idea what the hell is wrong.
When i move the arm on TPS i can get the voltage to go down from .024 to 0.
I have read that adding a dedicated ground to sensors ground terminal might help. I did that and the voltage jumped right to .79 but when i moved the arm on TPS the voltage just stayed at .79. I tried to drive the car like that and it would not shift out of frist gear.
What is going on? I really need your help guys. I always work on my cars and have built my turbo miata from gound up and now i feel like just bringing this jeep to a shop. I really dont want to do that.
Here is a little pic of my XJ. As soon as i fix this issue with TPS i will be installing a pacesetter header and borla exhaust.