meh we can all agree that our respective junks all slurp gas like no tomorrow. Be it at idle or under load. Another thing we all know is that the gas gauge is crap when it comes to accuracy. Assuming that it still works. I would say its not worth making any claims based off the gauge.
According to my scan gauge:
At idle, the 4.0 does consume around 0.6-0.7 GPH, @65MPH around 3-3.5 GPH
But if you are sitting at idle with the AC on, yeah it does look like the gas needle is attempting suicide. Idle flow rate remains the same. Done it enough time when waiting certain people
The gauge just sucks.
Adam's TJ is a 3spd auto. Its FE pretty much sucks. The numbers you posted were for the 5psd. The auto has an average 15MPG combined.
Everyone is pretty much right, by his own perspective and instrumentation.
Chill dudes.......
nascarnation,
The 3.8 isn't a real engine. Only the 4.0
