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T o give you heads up on this. 2 weeks ago i went back to working on my jeep and trying to find the issue. I started by removing all the wire covers and tracing all wires related to the TPS wiring harness. I ended up finding a bare wire to the CO2 censor and a 2nd wire not quite bare. i...

So as i just stated above i found 2 wires on my O2 censor that were bare. im replacing the O2 censor today and repairing the wires. i believe the O2 censor shares a ground with the TPS after i chased the wiring harness and removed all wire protections this weekend. the hesitation happens when...

I think i found my answer after taking sometime away from the jeep. after taking apart the wiring harness and looking over all wires i found couple of bare wires on the O2 censor will be replacing tonight and checking everything. not sure if that's the issue but it doesn't help things for...

I will try to correct my verbage for you to be correct. not a proper mechanic and will try to clean up for you to make us both understand better.

ok thank you.

I will check this out tonight/ tomorrow. if this is not done as you stated, will this increase the voltage to the TPS just asking? also will the CO2 sensor have anything to do with the "mis Firing"? not getting any readings on replacing it but just asking.

FYI just checked jeep (drove to Work) and temp gauge was unplugged. 1 problem fixed!!!

sorry forgot to say engine runs and jeep drives but hesitation/"misfire"

no problem, ill try to give you as much as i can... 1. jeep was running fine for a very long time. had off road for couple weeks and check engine light came, had a hole in muffler so was sounding great(sarcasm). as well as my alternator was making some bad squealing noises. and check engine...

I did notice that my thermostat is reading 0 right now. which is new. that ia have a new thermostat and will replace. would that have anything to do with? just asking..

Thanks for your help. ill check this out tonight/tomorrow and will get back to you.

thanks for help. let me see if i can type this correctly, (not much of mechanic but can figure things out). its not much of a back fire as a hesitation/studder (backfire might not have been proper term sorry). ive done all the test from Chrysler with Ecu and censors and this is what ive got...

Thank you for your help. The voltage jump was at the TPS censor when i had jeep in ACC. i manually moved the throttle while testing the input and output of the TPS and that's where i would get the voltage jump starting at 5V to 5.10 +/- at the TPS. the stuttering/backfire never happened...

Hello I'm new here. I have a 95 YJ with 2.5 manual transmission. i have some issue with backfires and stuttering (ECU was replaced and all good). I'm currently getting 4.85/5 volts to my TPS sensor which has been replaced as well. I can't figure out where the voltages jump is coming from and...