Quote:
Originally Posted by FlashStopFall
In my 2003 Jeep Grand Cherokee with the 4.0L, according to DashCommand, I’m using 1.2gph at idle with the A/C on (it’s about 0.9-1 with A/C and all accessories turned off). This just seems too high, meaning I would be able to idle for only 16 hours on a full tank. Does anyone have ideas to lower idle fuel consumption or find the culprits? (I run E85, but gph seems to be about the same on 87 octane).
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That does seem quite high, what engine speed is this at?
You might check to be sure your battery and alternator are working properly. My guess is the 4.0 i6 can idle pretty low if you can get the computer to allow it.