lugging and hesitation issue. AHHH!!!!
JK Jedi Master
Joined: Feb 2008
Posts: 12,904
Likes: 185
From: Maine
You may be seeing the cumulative ill effects of running at too low an rpm all the time.
I do what it takes to keep my rpm higher than the computers want it to be.
Around town, it's usually 2k or above. On non-highway roads that have a 55 mph limit, I let it run at 2.5k. It seems to love it.
I do what it takes to keep my rpm higher than the computers want it to be.
Around town, it's usually 2k or above. On non-highway roads that have a 55 mph limit, I let it run at 2.5k. It seems to love it.
Last edited by ronjenx; Feb 5, 2015 at 06:29 PM.
Thread Starter
JK Enthusiast
Joined: Nov 2011
Posts: 173
Likes: 1
From: nashville,tn
I have a heavy foot and spend the majority of my driving is on the interstate so I don't feel like I am lugging the engine around all the time Based off the symptoms, where would you start? Really focusing on the hesitation since that's a new symptom. Thinking about checking fuel pressure and maybe changing plugs even though the current ones are only a year old. I thought it could be a throttle position sensor until I realized it is drive by wire. Could bad gas cause the issue? Noticed it after my last fill up but it was High premium shell which I figure lessens the chance of it being bad.
Last edited by mpthompson84; Feb 5, 2015 at 06:43 PM.
JK Jedi Master
Joined: Feb 2008
Posts: 12,904
Likes: 185
From: Maine
Yes, bad gas can cause varying degrees of bad performance.
To see if it's from running at too low an rpm for a while, remove the plugs and look at them. See if they are carboned up, check the gaps, and look at the tops of the pistons.
See if there is a lot of oil in the PCV line, and change the valve while you're at it.
That's a place to start, but don't discount re-gearing as the best improvement.
To see if it's from running at too low an rpm for a while, remove the plugs and look at them. See if they are carboned up, check the gaps, and look at the tops of the pistons.
See if there is a lot of oil in the PCV line, and change the valve while you're at it.
That's a place to start, but don't discount re-gearing as the best improvement.
Thread Starter
JK Enthusiast
Joined: Nov 2011
Posts: 173
Likes: 1
From: nashville,tn
Yes, bad gas can cause varying degrees of bad performance.
To see if it's from running at too low an rpm for a while, remove the plugs and look at them. See if they are carboned up, check the gaps, and look at the tops of the pistons.
See if there is a lot of oil in the PCV line, and change the valve while you're at it.
That's a place to start, but don't discount re-gearing as the best improvement.
To see if it's from running at too low an rpm for a while, remove the plugs and look at them. See if they are carboned up, check the gaps, and look at the tops of the pistons.
See if there is a lot of oil in the PCV line, and change the valve while you're at it.
That's a place to start, but don't discount re-gearing as the best improvement.
I'll check the plugs, pistons and change the pcv. I'll check fuel pressure too. Something has to be causing the hesitation/stumble. Go from there I guess. Thx ronjenx
Last edited by mpthompson84; Feb 5, 2015 at 07:54 PM.
Thread Starter
JK Enthusiast
Joined: Nov 2011
Posts: 173
Likes: 1
From: nashville,tn
Well...was driving today, same issue with hesitating while accelerating at low rpm /high gear. This time when I tried to accelerate through it, I heard a BANG. I didn't feel the bang but heard it. Sounded like it was coming from under the Jeep. Bummed out. Wishful thinking is that I ran over something but I don't think that was it. Meeting up with the local "Jeep club mechanic" on Sunday to have him take a stab at it.
Last edited by mpthompson84; Feb 6, 2015 at 03:50 PM.
JK Jedi Master
Joined: Feb 2008
Posts: 12,904
Likes: 185
From: Maine
Well...was driving today, same issue with hesitating while accelerating at low rpm /high gear. This time when I tried to accelerate through it, I heard a BANG. I didn't feel the bang but heard it. Sounded like it was coming from under the Jeep. Bummed out. Wishful thinking is that I ran over something but I don't think that was it. Meeting up with the local "Jeep club mechanic" on Sunday to have him take a stab at it.
Keep us posted.
