the later 4.6 Bosch "Thor" engine is a lot better as far the injection goes. It's definitely a bundle of snakes under the hood
the later 4.6 Bosch "Thor" engine is a lot better as far the injection goes. It's definitely a bundle of snakes under the hood
Keith Tanner said:The 4.0 XJ I'm driving right now gets 13-16 mpg in actual use in 2WD. That's worse than my 6.7 Cummins or the 400 hp M5, but without the associated torque or power
We bought our 99 4.0 XJ with 50k miles on it, completely stock, and got 19 average. Then I lifted it 5.5 inches and put 33inch tires on it and it dropped to 14.
This one's running 29.5" tires and is lifted 2". The speedo is off by about 5%, so I guess I'm getting slightly better than 16. It's a 1990 so the EFI isn't as sophisticated as a 1999 model would be. I did notice that running the trans in "comfort" instead of "power" made a significant difference to economy. This is on a commute that's pretty much constant 40 mph running for 30 minutes, so hard acceleration and high speed drag are not major factors.
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