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26-05-2021
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Senior Newbie
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Join Date: Oct 2020
Age: 63
Posts: 74
Likes: 17
Liked 5 Times in 5 Posts
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4.7 Fuel Usage
Just did a trip from Hervey Bay to Brissy, doing speed limits i.e. 60 to 110k's with a fair bit of 40kph thrown in at road works, distance of just over 300k's.
According to trip computer it got down to 12.9L per 100klm, have only figured out how it works after having elec probs in the door LOL.
Was wondering how this sits with other 4.7's or even the 4.0L?
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26-05-2021
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Full Flexer
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Join Date: Apr 2020
Location: Townsville NQ
Posts: 1,099 What Jeep do I drive?: TJ
Likes: 758
Liked 619 Times in 415 Posts
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My TJ 4.0L is around 7’s to 9’s for highway driving (longish uninterrupted trips) but easily 15 to 22L around town. If not careful on acceleration around town gets into the 20’s no worries at all.
I keep a GPS for trips and then record distance against litres when I fill up so I have a pretty good idea on what mine is doing.
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Jeep TJ rebuilt 4.0L, Custom Steel Roof Racks, vintage ((Jeep specific)) 15” Centerline Hellcats,
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26-05-2021
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Full Flexer
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Join Date: Apr 2009
Location: Brisbane Southside
Age: 60
Posts: 584 What Jeep do I drive?: WJ
Likes: 68
Liked 161 Times in 131 Posts
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Quote:
Originally Posted by steelo2525
Just did a trip from Hervey Bay to Brissy, doing speed limits i.e. 60 to 110k's with a fair bit of 40kph thrown in at road works, distance of just over 300k's.
According to trip computer it got down to 12.9L per 100klm, have only figured out how it works after having elec probs in the door LOL.
Was wondering how this sits with other 4.7's or even the 4.0L?
Sent from my Nokia 7.2 using Tapatalk
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Did you zero your trip computer before departure? And what fuel did you use? That’s not great for on the highway, I use 98 in my ‘99 4.7 and on that trip (we have a house up there so do it regularly) I get about 9.8-11 litres/100km. Normally around 10.5-11l, I can do the round trip Bris -Maryborough and return on a tank.
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26-05-2021
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Senior Newbie
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Join Date: Oct 2020
Age: 63
Posts: 74
Likes: 17
Liked 5 Times in 5 Posts
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Quote:
Originally Posted by skipperau
Did you zero your trip computer before departure? And what fuel did you use? That’s not great for on the highway, I use 98 in my ‘99 4.7 and on that trip (we have a house up there so do it regularly) I get about 9.8-11 litres/100km. Normally around 10.5-11l, I can do the round trip Bris -Maryborough and return on a tank.
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Yep reset it all, I was using 95, the computer was still coming down but very slowly and we stopped twice for Mrs.
Mines an 03 Limited, getting serviced every 6 months, was told last time that it needs new plugs this time.
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Last edited by steelo2525; 26-05-2021 at 04:31 PM.
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26-05-2021
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CrawlerStar
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Join Date: Jun 2014
Location: Yarra Valley Vic
Posts: 255 What Jeep do I drive?: WJ
Likes: 8
Liked 132 Times in 89 Posts
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i am normally around 14 litres per 100 on 33s and 6" lift on the freeway if i am behind another car it drops to 11 per 100.
offroad i normally get 18-22 depending on what type of driving.
My best run was from Cumberland junction to Warburton where i got around 2 litres per 100, gravity makes a difference
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26-05-2021
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Established Member
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Join Date: Jul 2015
Location: Adelaide
Posts: 2,081 What Jeep do I drive?: WK2
Likes: 2,509
Liked 991 Times in 632 Posts
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My old WJ couple of inches lift, 32's, 4.7 would get around 12 innthe highway and 17 or so around town. Was horrendous on sand, could nearly watch the gauge drop
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I drive over stuff!!!!
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26-05-2021
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Full Flexer
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Join Date: Apr 2020
Location: Townsville NQ
Posts: 1,099 What Jeep do I drive?: TJ
Likes: 758
Liked 619 Times in 415 Posts
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Quote:
Originally Posted by steelo2525
Yep reset it all, I was using 95, the computer was still coming down but very slowly and we stopped twice for Mrs.
Mines an 03 Limited, getting serviced every 6 months, was told last time that it needs new plugs this time.
Sent from my Nokia 7.2 using Tapatalk
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There it is ! When I first got my Jeep 4.0L fuel economy was terrible. Until I changed the plugs ........ the old ones were horrid. I find they need to be gapped properly as well.
__________________
Jeep TJ rebuilt 4.0L, Custom Steel Roof Racks, vintage ((Jeep specific)) 15” Centerline Hellcats,
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