Raptor Sagging on Driver's Side

[davids240]

Hi All!

This is only my second post after my intro post so really hoping someone can lend a hand. Here's the scoop. I have a 2024 Bronco Raptor with the Eibach springs on it on all four wheels to allow 40s to fit. Pretty straight forward. Only other thing that was replaced at the same time were the tie rods. When I first got it back, the drivers side in the back was sagging 1/2 inch. Took it back to the shop. The guy wasn't sure what was wrong so to test it he swapped the springs and it was still 1/2 in. off so he put some spacers in the shock mount to eat up the space and all was well. Then, last night after getting home from being gone for a few days I drove around, came back and washed it, and noticed the driver's side is sagging 1/2in in the back and a full inch at the front. That's noticeable! We are both perplexed as to what the issue could be.
He found some calibration video online and is planning to see if that's going to fix it tomorrow, but could use some input from anyone else.
It's not the frame. It's not the tire diameter, it's not the tire psi. Thank you for any input folks !

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[Bigmoose]

Sure the correct springs went in the right spots? Maybe you have fronts on the left side and rears on the right. Not sure if its even possible.

 

[davids240]

Sure the correct springs went in the right spots? Maybe you have fronts on the left side and rears on the right. Not sure if its even possible.

Nah, the springs only go in one way.

 

[grant4514b]

Mine is doing the same thing after the Eibach install. I believe it’s from the heavier spare wheel/tire, IAG tailgate table and Turn Off-road tailgate reinforcement. Those 3 combined added over 100 lbs the the right rear and it now sits about 1” lower than the driver side. I have reset the ride height in Forscan and it made no difference.

 

[davids240]

So in case others run into this. The shop who did the work discovered that apparently there's some sensor on the suspension that reads and angle between 30-60 degrees. When adding the springs, it puts that angle to 72 degrees and therefore the computer doesn't even see it so there's no flags going off. They have fabricated a part to adjust the angle of the sensor and now the computer reads it. Crazy.

 

[MORaptor1]

Roy D. Mercer.......How Big'A Boy Are Ya?

 

[DewarT]

So in case others run into this. The shop who did the work discovered that apparently there's some sensor on the suspension that reads and angle between 30-60 degrees. When adding the springs, it puts that angle to 72 degrees and therefore the computer doesn't even see it so there's no flags going off. They have fabricated a part to adjust the angle of the sensor and now the computer reads it. Crazy.

So did this impact the height difference at all? The sensor is for the live valve shocks that are designed to monitor road conditions and adjust accordingly. The angle would certainly make a difference in response of the shocks, but I don't see how they would adjust for height differences...

 

[davids240]

So did this impact the height difference at all? The sensor is for the live valve shocks that are designed to monitor road conditions and adjust accordingly. The angle would certainly make a difference in response of the shocks, but I don't see how they would adjust for height differences...

Well, it turns out that this is still a mystery. I went to the dealership for a Bronco event and he said to go drive it hard as it could be the springs needing to settle. It also could help it calibrate by doing so. So, yesterday I went out to the desert and put it through it's paces and it didn't fix it completely. It does seem like it has gotten a little better, BUT the height issue moves and adjusts, meaning that let's say I started yesterday with the front driver's side an inch lower, then the back a 1/2 in lower. Then, as of last night, the front driver's side is a 1/2in lower and the back a 1/2 in lower. It's like it adjusts to different heights throughout the day and I'm constantly playing with different shock stiffness as i drive, different driving modes (they said that might help in case it's like stuck on one side and needs to get unstuck).

The whole thing is extremely frustrating and inconsistent. I can't figure it out. It's like the driver side sensors simply aren't doing what they are supposed to.

 

[DewarT]

Back in the mid-90s, I was an engineer for suspension products. We always fought the big 3’s ability to throw money at a problem. It was (likely still is) very common to adjust spring rates from driver side to passenger side to accommodate for fuel tank location, engine harmonics and drivability among other things. Within one family of 4x4s, you could see a dozen or more spring rates (or static spring heights) based on options. It was fairly frustrating to accommodate for all these, but one of the primary focuses for the aftermarket was driver to passenger height uniformity (aside from ride quality, drivability and lift height).

I wonder if the same action is at play here and Eibach has not adjusted for that. The electronic damping shouldn't create a static spring height issue, but with the complexity of these systems- anything is possible.

 

[TheLawnDart]

Hi All!

This is only my second post after my intro post so really hoping someone can lend a hand. Here's the scoop. I have a 2024 Bronco Raptor with the Eibach springs on it on all four wheels to allow 40s to fit. Pretty straight forward. Only other thing that was replaced at the same time were the tie rods. When I first got it back, the drivers side in the back was sagging 1/2 inch. Took it back to the shop. The guy wasn't sure what was wrong so to test it he swapped the springs and it was still 1/2 in. off so he put some spacers in the shock mount to eat up the space and all was well. Then, last night after getting home from being gone for a few days I drove around, came back and washed it, and noticed the driver's side is sagging 1/2in in the back and a full inch at the front. That's noticeable! We are both perplexed as to what the issue could be.
He found some calibration video online and is planning to see if that's going to fix it tomorrow, but could use some input from anyone else.
It's not the frame. It's not the tire diameter, it's not the tire psi. Thank you for any input folks !

So I’m seeing a little sag on. The passenger side of my Bronco too. Initially has 2” hyper co and just swapped to 1” rear. I’m curious where that sensor is and if that’s what is causing it. My only other thought was the Panhard bar binding

 

[DewarT]

So I’m seeing a little sag on. The passenger side of my Bronco too. Initially has 2” hyper co and just swapped to 1” rear. I’m curious where that sensor is and if that’s what is causing it. My only other thought was the Panhard bar binding

‘you could eliminate concern for the panhard- park it on a level surface and loosen both bolts. You could either jack up the body or push the body around some manually- then set it back down with full weight on the springs and tighten the bolts. This will relieve any stress in the bushings from prior ride height.

 

[P52Ranch]

Roy D. Mercer.......How Big'A Boy Are Ya?

I think that Raymond’s 77 AMC Pacer sagged on the left side from Roy Dam’s wife.

 

[rayofsi]

I Have the exact same issue with my eibach springs. it seems to vary over the day...

 

[davids240]

I Have the exact same issue with my eibach springs. it seems to vary over the day...

Exactly, mine did the same where in the morning it might be a 1/2 up front, then later 1" in the afternoon. My shop ended up creating a modified part for the heigh adjuster that puts something or other back into the range of the OEM height so the computer could pick it up. It didn't seem to really fix it per se, but I then took it to the dealer and they actually messed with it a bit and made some adjustments to it. It seemed to be a bit better. Well, for some reason, 3 weeks later, it looks like i'm staying pretty level most of the time now. Which means that:
1. the computer learned over time what to do.
2. I've gone out a couple times and rode it pretty hard and fast
3. I'm lost.
I really can't point to what has changed. I do notice the back will sometimes be a half inch off, but that's actually within oem standards, but the front has looked consistently level.

It was really frustrating to say the least, because one corner being off a full inch and sometimes more looked to me like something was broken or something and I hated it. Hope something can fix yours.

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