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Oh that's interesting. I thought that once it had completed all the "tests" that it went into and stayed in closed loop. I'll have to see if I can display that information.

Here's a petal to the floor acceleration run up to hmmm 60 I believe.
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This is the 2003 TJ with the throttle held at 2000 rpm
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I noticed on both the 98 and the 03 (The 99 wasn't at...

lol I was just pricing ECMs on ebay.

Here's a curve, or two.

I have the 99+ intake, an aftermarket cam (as big as you can put in without computer changes says CRANE) and prior to installing the...

This is interesting. So I think I need to reset the computer, wait for closed loop, then watch both short term and long term fuel trim to get a fresh good reading.

What I have seen for years, at...

It's been cleared several times the latest the day before yesterday.

Great information! Thanks Steve.

I've added short term fuel graph to my display. I'll monitor it on the way home.

Long Term Fuel Trim

Lean, very lean. Well I've been told that the higher the voltage on the O2 sensor the richer the air/fuel mix. So ZERO volts would be a lean as it gets. :D

After changing in the right injectors, in other words I stopped running 24 lbs injectors (@ 39 psi) and now have 24 lbs injectors (@49 psi) I've had a hesitation issue.

Here's some data...

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