I'm no mechanic, just an old guy who's owned a few LOL ... and I've forgotten more than I now know HA. I just figured if it still does it at speed, while in neutral, that might make me think more along the lines of drive-line and rear end than transmission and torque converter.
How's the Liberty running? It's not a misfire at a certain RPM or anything causing shudder is it?
ALSO ... at speed and when it's doing it ... if you shift into neutral, does it stop the "rumble" or has no effect and it keeps rumbling?
... one other thought comes to mind ... was it doing it before you did the "whole 9 yards" on the rearend. If not, maybe it's something associated with those repairs.
Here's one discussion on here about it ... or something similar
https://www.jeepkj.com/threads/vibration-from-rear.55873/
EDIT: Use the forum search for RUMBLE. The cause could be torque converter, wheel imbalance, wheel bearings and maybe a few others, but the most common was a bad rear...
So very true. I'd forgotten about that. Don't often redline the engine LOL and was so focused on the codes, didn't pay attention to detail in the video. Wonder if the codes are a result of redline or preexisted? Clear the codes and see if they come back I guess ... and don't redline the Jeep.
Well, one possibility that comes to mind is a faulty thermostat. Maybe some rust and debris in the coolant system causes the thermostat to stick occasionally. Don't know when the last time your system was flushed but maybe it's time to flush and refill the system? Or maybe the thermostat is...
If the fuel air mixture isn't right, the engine will not run properly. First, I'd check for frayed and worn wiring such as the guy in the video talks about the O2 sensor wiring near the driveline, but follow the wiring and check connectors too. Rule out the simple stuff first.
EDIT: Check these...
Sounds like you've checked or changed most everything. I feel your frustration. Might find some other ideas at this link ... https://www.700r4transmissionhq.com/p0174-jeep-liberty/ ... but I think you've tried most all that stuff.
That link covered the basics, but what if those fixes don't get...
Exactly @Squamish_Steffen . I've installed original Mopar bump stops by hand but these Teraflex stops are much more rigid and absolutely required this kind of leverage to pop in ... at least on my KJ. I used some silicone grease, but Tom mentioned other lubricants that would work, to slick up...
UPDATE: Went back out and gave the shovel method a try. Couldn't wait until tomorrow and wasn't going to let a stupid bump stop beat me LOL
Started the back side (inside toward Jeep) of the bump stop first, then used the back of the shovel head for contact point and the long fiberglass handle...
Was already worn out after cutting grass but decided to tackle installation of the Teraflex bumps stops that came today, on the front of the Jeep. I've installed OEM bump stops before ... piece of cake.
But these Teraflex stops just aren't as pliable or flexible as the original equipment ones...
When was the last time it cranked and ran? How was it running then, since before it's been sitting? ... What was the last thing you worked on? Just trying to help you think it through.
Check connectors at the Engine Control Module (ECM) and Transmission Control Module (TCM) ... look for other...
The fact that the fuel gague doesn't move, makes me think maybe there is a fuel pump or pressure problem ... or someone has stolen all your gas ... or all the gas has leaked out.
I haven't faced this issue and not sure where to start. Maybe check for any blown fuses. Maybe there is a procedure...
Thanks Tom !!! Been many years since I spoke with Heather. Got shocks and bars from them back in the day (maybe other stuff). Good folks. Glad to know they're still doing what they do.
REF: Mopar parts catalog "2003 Jeep Liberty / Cherokee (KJ)" June 2003
Suspension, Front and Strut Figure 002-110 item #25
52128 532AA Mount, Shock Upper ... RIGHT
52128 533AA Mount, Shock Upper ... LEFT
These parts are integral to the coil over assembly. I figured the assemblies were...
Look down beside the brake master cylinder. If you see an aluminum block with brake lines going to it, the Liberty DOES NOT have ABS.
I have an '03 and ABS was optional. I don't have ABS. I think if instead of an aluminum block, you see something with wired connectors then you do have ABS. At...
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