Topic: Installed Jet Chip today.

[dexetr30]

I had something similar happen to me. I took the chip out and cleaned all the connection on the ecm, chip and plug with electronic contact cleaner. I plugged it back in and made sure it was seated properly (it wasn't the first time) and reset the ecm. I haven't had any troubles since then.

[Jeffy]

Well first things first... check to see that you have the correct model chip (90017 for stage1)
Second.... Did you make sure everything was seated correctly and that you reset the ECM after installation? 


You can either give it another shot or try calling Jet.  They seem to be pretty good at helping people with problems with their chips.


and This is sort of off subject but I never knew they put OBDII 2.5l in the Cherokee.  Learn something new everyday!

side note: OBDII was required on all model year 1997 vehicles.  Since the Cherokee continued to 2001, it had to fulfill these DOT/EPA requirements.

[dpilot]

Well first things first... check to see that you have the correct model chip (90017 for stage1)
Second.... Did you make sure everything was seated correctly and that you reset the ECM after installation? 


You can either give it another shot or try calling Jet.  They seem to be pretty good at helping people with problems with their chips.


and This is sort of off subject but I never knew they put OBDII 2.5l in the Cherokee.  Learn something new everyday!

yes the model is correct
yes the ECU was reset
the 2.5L engine is the same as in wrangler TJ (my cherokee is '99 model sold in Europe)

Still my question is why the check engine lit after 3 days and 200km and not from the beginning if something was wrong with it?

[dexetr30]

Still my question is why the check engine lit after 3 days and 200km and not from the beginning if something was wrong with it?

My started doing it on the 2nd day. It wouldn't do it until the engine bay heated up and I was hitting bumps in the road.