XJ using a lot of gas
Thread Starter
Member
Joined: Jun 2013
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Model: Cherokee
XJ using a lot of gas
My XJ is using way too much gas, out of nowhere. I used to get 15mpg at least, but this week I've been getting around 7.
I've also noticed, that when I first hit my gas pedal after sitting still, it kind of cuts out before sounding like normal, when accelerating, just for half a second.
Anyone know what this might be?
I've also noticed, that when I first hit my gas pedal after sitting still, it kind of cuts out before sounding like normal, when accelerating, just for half a second.
Anyone know what this might be?
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Junior Member
Joined: Oct 2013
Posts: 60
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From: Rapid City, SD
Year: 1999
Model: Cherokee
Engine: 4.0
Sorry maybe I missed something? What is funny? I was just trying to be helpful? I realize that there is a lack of information on his particular XJ. I just looked at his previous post and it stated he had a 1994 XJ 4.0....
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
However, nothing's posted in this thread... kind of a biggy for people who aren't regular followers.
Junior Member
Joined: Oct 2013
Posts: 60
Likes: 0
From: Rapid City, SD
Year: 1999
Model: Cherokee
Engine: 4.0
Also what he has described above are classic signs of a bad throttle position sensor. Don't get me wrong it could be a whole host of other issues but a tps seems the most plausible.
Aaron
Aaron
Junior Member
Joined: Oct 2013
Posts: 60
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From: Rapid City, SD
Year: 1999
Model: Cherokee
Engine: 4.0
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Actually, for a pre-97 XJ with the 4.0, that kind of massive loss in fuel economy is most often the MAP vacuum tube has broken or come off.
Thread Starter
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Joined: Jun 2013
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Model: Cherokee