JustSumDad
Member
Hi all, so my daughter got this KJ and we have been fixing a few things up. Got it cheap so we expected to be working on it 
One of the errors was upstream and downstream O2 sensor codes, so I got a pair of nice new NTK upstream O2 sensors and put them in.
I chose not to do the down stream O2 at first as they were not giveing heater errors, so the rich condition they were reporting seemed likely due to the upstream not working properly.
Once the upstream were changed out, shortly after the downstream started new errors... heater errors that were not there before...
So I unplugged them cleaned connections, traced wires etc etc... Nothing, disconnected battery for a few hours to clear and reset ECU. No change...
clearing codes they just come right back.
Reluctantly ordered a pair of downstream O2 sensors... Ok, life can be like that.
They are enroute from supplier as I type this...
So here it gets werid, last night we were out and I obtained the PID code scanner add on for my torque-pro app, decided to run a full scan of all PID to see if there are any hidden sensors I can read.
This process takes a few min, and I put the ph down while it was doing its thing. About a min later the KJ just died, stalled all lights on the dash came on... dead.
panic, put it in park, shut off key. Take a breath, start her back up...
No codes now, runs perfectly....... Drove about for an hour or so, just works perfectly... No codes came back...
wtf?!?! this cant be normal, makes me nervous...
Any ideas? These are the codes I was getting before the scan:
One of the errors was upstream and downstream O2 sensor codes, so I got a pair of nice new NTK upstream O2 sensors and put them in.
I chose not to do the down stream O2 at first as they were not giveing heater errors, so the rich condition they were reporting seemed likely due to the upstream not working properly.
Once the upstream were changed out, shortly after the downstream started new errors... heater errors that were not there before...
So I unplugged them cleaned connections, traced wires etc etc... Nothing, disconnected battery for a few hours to clear and reset ECU. No change...
clearing codes they just come right back.
Reluctantly ordered a pair of downstream O2 sensors... Ok, life can be like that.
They are enroute from supplier as I type this...
So here it gets werid, last night we were out and I obtained the PID code scanner add on for my torque-pro app, decided to run a full scan of all PID to see if there are any hidden sensors I can read.
This process takes a few min, and I put the ph down while it was doing its thing. About a min later the KJ just died, stalled all lights on the dash came on... dead.
panic, put it in park, shut off key. Take a breath, start her back up...
No codes now, runs perfectly....... Drove about for an hour or so, just works perfectly... No codes came back...
wtf?!?! this cant be normal, makes me nervous...
Any ideas? These are the codes I was getting before the scan:
You must be registered for see images attach
