Four Problems in a 6.5 mile trip!

[Tacanta14]

Coming back from the post office my '22 BD 2.3 MT (13500 miles) bucked a few times when shifting from 2nd to 3rd (3rd or 4th time this happened) , hood ajar message/warning a mile later (2nd time), parked when I got home and passenger window wouldn't stay up (1st time) and then exiting the Bronco (in 1st gear w/parking brake applied) when my brother (a first responder the day after 9/11 and suffering some health complications from digging in the rubble) was getting out the Bronco lurched forward several inches 3 times and freaked him out because he was 1/2 way out the door (1st time this happened). I did check the forums and was familiar with the window issue and the hood ajar issue, and previously was OP on the lurching issue while driving, but searched the forums and couldn't find anything on the moving while parked issue. I live 165 miles from my dealer and thought I'd seek out any input here before dealing with the "drop it off and we'll try to duplicate what's wrong" from Ford, so any help would be much appreciated, and thanks!

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[Brian_B]

I can say my 7MT would get a bit "bucky" between 1 and 2 on occasion early on, but that seems to have went away when I installed ProCal. I can't swear that fixed it, that entirely could be a coincidence, and I'm not necessarily advising you to go out and spend $800 to fix something that shouldn't be occurring. It wasn't ever anything I could duplicate on command though, and I only drove it without the tune for a couple of months. My wife just thought it was me screwing up the clutch (and that is entirely possible that it was). A lot of folks with Autos mention something similar, although for them it usually ends up being an Auto Tranny thing, although it makes me wonder sometimes if it isn't an engine thing.

As far as lurching while parked - I've heard of this on the Autos, where the pawl just wasn't quite engaged when shifting to Park and it'll roll a bit until the pawl locks in. But on a manual, as long as you are in 1st (or C) - the thing isn't going to go anywhere, and especially not with the parking brake on.

There have been some issues with the parking brake - mostly due to low battery charge and it deciding to engage suddenly on the 2.7's when the electric brake booster thinks it's going to crap out. But on the 2.3's the brake booster is vacuum - there's been issues on the trail when someone has stalled the engine out and lost braking power (and rolled backwards due to it), but I think it was decided they also had the clutch in, and had they let off the clutch the engine braking would have probably stopped them.

Sure you weren't up on a rock or stick/branch/log/squirrel or something and it shifted out under your tire?

Apart from that - may want to top off the charge on your battery with a maintainer. I know that sounds stupid - but these Broncos have all sorts of weirdness happen if it thinks the battery is low. Make sure you hook the charger up correctly so the BMS sees it. (ground to chassis or the post off to the side, not directly on the terminal)

 

[Tacanta14]

I can say my 7MT would get a bit "bucky" between 1 and 2 on occasion early on, but that seems to have went away when I installed ProCal. I can't swear that fixed it, that entirely could be a coincidence, and I'm not necessarily advising you to go out and spend $800 to fix something that shouldn't be occurring. It wasn't ever anything I could duplicate on command though, and I only drove it without the tune for a couple of months. My wife just thought it was me screwing up the clutch (and that is entirely possible that it was). A lot of folks with Autos mention something similar, although for them it usually ends up being an Auto Tranny thing, although it makes me wonder sometimes if it isn't an engine thing.

As far as lurching while parked - I've heard of this on the Autos, where the pawl just wasn't quite engaged when shifting to Park and it'll roll a bit until the pawl locks in. But on a manual, as long as you are in 1st (or C) - the thing isn't going to go anywhere, and especially not with the parking brake on.

There have been some issues with the parking brake - mostly due to low battery charge and it deciding to engage suddenly on the 2.7's when the electric brake booster thinks it's going to crap out. But on the 2.3's the brake booster is vacuum - there's been issues on the trail when someone has stalled the engine out and lost braking power (and rolled backwards due to it), but I think it was decided they also had the clutch in, and had they let off the clutch the engine braking would have probably stopped them.

Sure you weren't up on a rock or stick/branch/log/squirrel or something and it shifted out under your tire?

Apart from that - may want to top off the charge on your battery with a maintainer. I know that sounds stupid - but these Broncos have all sorts of weirdness happen if it thinks the battery is low. Make sure you hook the charger up correctly so the BMS sees it. (ground to chassis or the post off to the side, not directly on the terminal)

Thanks for your reply! Parked in my usual spot and nothing under any tire, and my brother screamed at me because he had 1 foot on the ground while still sliding out of the passenger seat, and I told him it was off, in 1st gear with my foot off the clutch with the parking brake on. He was out of the Bronco when it did it the third time and said the wheels were turning, and I had the setting on "gauges" and the battery was at 13.7volts, which is where it usually sits after driving it. Funny thing was that I was telling him about all the troubles some have had with their Bronco's but that I felt relatively lucky that I only had a couple of minor problems that were temporary and "fixed" themselves when all 4 things happened in rapid succession!

 

[Sitruc_btb]

Ive felt the bucking when shifting from 1st to 2nd. Not all the time, pretty intermittent. I wonder if there isnt enough grease on the input shaft, and clutch disc sticks a bit.

My right rear window likes to fight me sometimes. Gotta relearn it every now and then. Ive read a new window regulator fixes the issue, and Ive replaced some on Honda's for the same problem.

The lurching while parked is a weird one. In gear with parking brake, it shouldn't move.
No remote start or anything installed? Parking on a steep grade?

 

[Tacanta14]

Ive felt the bucking when shifting from 1st to 2nd. Not all the time, pretty intermittent. I wonder if there isnt enough grease on the input shaft, and clutch disc sticks a bit.

My right rear window likes to fight me sometimes. Gotta relearn it every now and then. Ive read a new window regulator fixes the issue, and Ive replaced some on Honda's for the same problem.

The lurching while parked is a weird one. In gear with parking brake, it shouldn't move.
No remote start or anything installed? Parking on a steep grade?

No remote start (I don't think it's even available for an MT), and I do park on a slight decline, but in 1st gear with the parking brake applied, there is no way the wheels should be rolling! I let it sit since it happened, but I'm going to start it up this morning and make a short trip, and thanks for your input!

 

[wjtinfwb]

Coming back from the post office my '22 BD 2.3 MT (13500 miles) bucked a few times when shifting from 2nd to 3rd (3rd or 4th time this happened) , hood ajar message/warning a mile later (2nd time), parked when I got home and passenger window wouldn't stay up (1st time) and then exiting the Bronco (in 1st gear w/parking brake applied) when my brother (a first responder the day after 9/11 and suffering some health complications from digging in the rubble) was getting out the Bronco lurched forward several inches 3 times and freaked him out because he was 1/2 way out the door (1st time this happened). I did check the forums and was familiar with the window issue and the hood ajar issue, and previously was OP on the lurching issue while driving, but searched the forums and couldn't find anything on the moving while parked issue. I live 165 miles from my dealer and thought I'd seek out any input here before dealing with the "drop it off and we'll try to duplicate what's wrong" from Ford, so any help would be much appreciated, and thanks!

This weak battery stuff is real. My Bronco's been fine, but on Sunday my wife's '20 MDX AWD had a flat left front tire. I put on the spare "limited service" tire the MDX came with, inflated it to 60psi per the recommendation and pulled out onto the road. One 90' left turn onto the freeway ramp (1/4 mile from the driveway) and the car went berserk while driving. Accelerating onto the freeway on-ramp, dash lights for traction control, Stability control, lane keeping, etc. all came on and the power immediately cut, the car would not accelerate and I could hear and feel the ABS cycling furiously with the steering wheel shaking like the mixer at Sherwin-WIlliams. Got to the side of the road, smoke pouring from the left front wheel and the car in limp mode. I had it towed to the Acura dealer who said something caused the traction control and stability control to detect wheelspin and being AWD started cycling the ABS on the left front to control the wheel with the spare tire on it. I figured the goofy spare was smaller than the factory wheel/tire and caused the false wheelspin message to the computer. But in checking stats, the Tempa-Spare is almost identical diameter to the factory wheel and tire, as you'd expect for an AWD vehicle. Dealer is suspecting an electrical fault due to a low battery exacerbated by the miniscule difference in wheel size caused the issue. Hoping a new battery correct the issue.

 

[RimrockPaul]

Maybe auto stop start issue?

 

[Tacanta14]

This weak battery stuff is real. My Bronco's been fine, but on Sunday my wife's '20 MDX AWD had a flat left front tire. I put on the spare "limited service" tire the MDX came with, inflated it to 60psi per the recommendation and pulled out onto the road. One 90' left turn onto the freeway ramp (1/4 mile from the driveway) and the car went berserk while driving. Accelerating onto the freeway on-ramp, dash lights for traction control, Stability control, lane keeping, etc. all came on and the power immediately cut, the car would not accelerate and I could hear and feel the ABS cycling furiously with the steering wheel shaking like the mixer at Sherwin-WIlliams. Got to the side of the road, smoke pouring from the left front wheel and the car in limp mode. I had it towed to the Acura dealer who said something caused the traction control and stability control to detect wheelspin and being AWD started cycling the ABS on the left front to control the wheel with the spare tire on it. I figured the goofy spare was smaller than the factory wheel/tire and caused the false wheelspin message to the computer. But in checking stats, the Tempa-Spare is almost identical diameter to the factory wheel and tire, as you'd expect for an AWD vehicle. Dealer is suspecting an electrical fault due to a low battery exacerbated by the miniscule difference in wheel size caused the issue. Hoping a new battery correct the issue.

Well that sounds a heck of a lot worse than my problems, and I'm glad that you didn't crash into something! Hope you get your problems fixed and sorry that happened to you.

 

[C6ZZGT]

Well that sounds a heck of a lot worse than my problems, and I'm glad that you didn't crash into something! Hope you get your problems fixed and sorry that happened to you.

Do you set the park brake,take foot off brake, and then turn it off and then put in gear and let out clutch ?

 

[cracKen]

Different situation but, The lurching while parked happens when I take my foot off the brake after disengaging the parking brake. Basically the car isn't settled on completely flat ground since i often park in an uneven area with 3-5 inch rocks. To prevent it, when you stop your car, in neutral, let go of the brake completely, let the car settle into where it wants to be, THEN press on the brake, then engage the parking brake. If you forget the parking brake, and the car is in first gear, the car will move when you release the brake with the engine off. The car's 2.3 L engine isn't a big enough displacement like those old 6L v8 that can stop a car from moving.

 

[Tacanta14]

Do you set the park brake,take foot off brake, and then turn it off and then put in gear and let out clutch ?

Nope; it's in 1st, turn off, foot off clutch,, set brake, foot off brake; that's what I've always done, but I can't imagine doing it in a different sequence would make a difference, since it was off, in gear, with the parking brake on, and it still rolled forward, 3 times!

 

[Tacanta14]

Different situation but, The lurching while parked happens when I take my foot off the brake after disengaging the parking brake. Basically the car isn't settled on completely flat ground since i often park in an uneven area with 3-5 inch rocks. To prevent it, when you stop your car, in neutral, let go of the brake completely, let the car settle into where it wants to be, THEN press on the brake, then engage the parking brake. If you forget the parking brake, and the car is in first gear, the car will move when you release the brake with the engine off. The car's 2.3 L engine isn't a big enough displacement like those old 6L v8 that can stop a car from moving.

I always park on a slight decline (the shadiest spot) so that won't work, but in 1st gear with the parking brake applied, it shouldn't lurch forward 3 times, and it never has before, but thanks for your reply!

 

[C6ZZGT]

Nope; it's in 1st, turn off, foot off clutch,, set brake, foot off brake; that's what I've always done, but I can't imagine doing it in a different sequence would make a difference, since it was off, in gear, with the parking brake on, and it still rolled forward, 3 times!

Ours is an auto ,so slightly different,but the idea is to take the stress out of the driveline. Set the park brake and then put it in gear/park.

 

[Tacanta14]

Didn't do it yesterday so I'm hoping it was just a Bronco Gremlin one-off!

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