2001 Jeep Cherokee sport wide-open throttle bogs down what could be the possible problems causing that put new fuel injectors in with an upgrade from single jet to four jet to the TPS be my issue

 

I see your Jeep isn't the only thing that runs on. A little punctuation and clarity would really help us help you. Did you swap injectors before or after the problem started?

 

[QUOTE=lawsoncl;3671119]I see your Jeep isn't the only thing that runs on. A little punctuation and clarity would really help us help you. Did you swap injectors before or after the problem started?[/

The problem existed before the injectors were changed out, I had a bad injector in the number four-cylinder, it was stuck wide-open

I also have one other problem, my speedometer is not working, changed out speed sensor output, could the input sensor possibly be causing the problem, Engine light was on before I changed the sensor out (output sensor) now it is out and speedo is still not working. Thank you

 

Bogging when you stomp the pedal could be the TPS. Any issues with shifting would also hint at a bad TPS sensor. If it's struggling at high loads, it could also be a fuel delivery issue.

 

lawsoncl, thank you for that piece of information, used carburetor cleaner to clean air intake, I noticed the sensor right there and gave it a good cleaning , Took it out for a test drive and problem was gone, so thank you very much for the advice, giving it a good cleaning seem to solve the problem

 

I don't recommend spraying the TPS with carb cleaner. Sensor safe cleaner maybe, but the TPS is definitely sensitive to water and solvent intrusion.

 

I used throttle body cleaner, And the TPS is connected directly to that, correct me if I’m wrong, But it seem to have solved the problem, giddyup and go’s LOL, thank you again

 

Even blind squirrels find a nut on occasion.

Communication. It's not a one way street...

 

In thread three, I also explained a speedometer problem, speedometer is not working, changed out the speed sensor output, could the input sensor be cause of the problem, or is there another Sensor, Other than those two?

 

Throttle body cleaner and carb cleaner are a little different formulas. The throttle body cleaner is safer, but it still contains some chemicals that can damage the inside of the throttle position sensor such as acetone.

Which speed sensor did you swap? If 4wd, the speedometer sensor is in the transfer case and not the ones in the transmission. Did the gear on the sensor look okay, and did you rotate the sensor to the correct position when you reinstalled it? There are 4 positions you can install it in, depending on the which speedo gear is installed on the sensor.

 

I switched out the output sensor, the teeth on the gear had a couple chips in it, should I replace that, the number on the face tells me how many teeth are on it, and I had no idea that they were‘s for different positions, could you please explain that, And why that is, I’m just trying to get some better knowledge of this component and its actions, I know there is an input sensor and an output sensor are those the only two sensors or is there a specific unit these to go to, I am assuming that they both go to the CPU, then again I may be wrong, hence why I’m asking you. Thank you for your time on this matter it is very much appreciated

 

If the sensor had a gear on the end and looked like below, then you were in the right place. Input and output speed sensors usually refers to the sensors on the transmission used for controlling the shifting. The speedo has it's own sensor, called the Vehicle Speed Sensor (VSS), located in the transfer case for a 4wd or in the tailcone of the transmission for the 2wd. To calibrate the speedo for different size tires, you can install different sized gears with different numbers of teeth. The pinion gear is actually off center in the speedo adapter housing, so you can rotate it to 4 different positions to match which pinion gear is installed. The wrong position will either not fit, or the gear won't be touching the gear inside the xfer case or transmission.