Vibration noise under acceleration 1200-1400 RPM

[Fordguyw]

Yes sir! You rock!! Thanks! I will try it out tomorrow and post back… I drive almost an hour to work highway 70-80mph… usually any mode is ok then, it’s once you get below 55mph city/stop n go/ etc. as mentioned.
I’m looking forward to your pics of the fuel line spots to check. I can’t run the Maverick in sport mode!! I did when I first got it and I panicked thinking the damn engine didn’t have any oil in it lol! Sounded like metal clanging!! (Heat shield vibration) one of the guys in the forum posted video and that’s how I knew about low pressure fuel lines… sport mode sounds horrible and drives horrible unless you are driving all highway and expressway… truck jerks and lunges, and growls, and the metallic sounds are horrible!!

As I took pics of the fuel line and vapor line I remembered why I only checked the lines in the engine bay (not underneath). Here is what the Ford dealer found on @Enderet's Maverick:

I watched his video again too and, luckily, mine isn't making that noise, just the lugging vibration and noise. I had just checked my lines as a preventative when I first found this thread and read the thread @Enderet started.

Anyway, this is a picture of where the lines are retained on the firewall (to the left of the brake fluid reservoir). The line with green on the connector is the vapor line, the other line is the low pressure feed:

This is a picture of a heat shield that is very close to the fuel lines (hard to get a good pic but it's the piece with 3 rivets). It attaches to a brake line (brake lines are behind it):

I accidentally knocked that free from the brake line just feeling around down in there. It was easy to reattach but I'm just wondering if that isn't actually what was loose on Enderet's vehicle. I don't see anything obvious in the engine bay that the fuel lines could detach from and vibrate (unless that main retainer on the firewall was detached).

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[Rusty Nutts]

I couldn't tell by the video, but I have been experiencing what I would say feels like engine knock at about he same RPM's. Do you think this is the same thing?
2.0, AWD, 4k

 

[Ford Motor Company]

I couldn't tell by the video, but I have been experiencing what I would say feels like engine knock at about he same RPM's. Do you think this is the same thing?
2.0, AWD, 4k

Hi there! Can you send us a PM with your VIN and Ford dealership information? I’d be happy to look into this Maverick concern on my end.

 

[Fordguyw]

I couldn't tell by the video, but I have been experiencing what I would say feels like engine knock at about he same RPM's. Do you think this is the same thing?
2.0, AWD, 4k

I would guess it's probably the same issue. Current engines have sensitive knock sensors, wideband oxygen sensors, and computers that control camshaft and ignition timing extremely quickly. To feel (or hear) engine knock you'd have to have extremely bad gas, a mechanical issue, or a computer issue.

 

[Deerslayer1980]

Mine does the exact same thing and is most obvious around 35 mph. It actually happens at any speed where the engine is below 1500 rpm and the throttle is applied (lightly enough that it doesn't downshift or unlock the torque converter). The vibration and noise, caused by the lugging, is just much more noticeable at low speeds because there is less road & wind noise/vibration.

I'm a mechanic with over 30 years of experience and it's obvious to me the problem is in the PCM/TCM programming. The programming is keeping the transmission in too high of a gear and keeping the torque converter locked, which is causing the vehicle to lug (like a manual trans in 4th gear when it should be in 2nd). This lug is causing engine/transmission/driveline vibration until it reaches that 1400-1500 RPM point. I'd guess this programming was done in an attempt to keep RPMs as low as possible for gas mileage, but it definitely causes unwanted (and possibly damaging) NVH (noise, vibration, harshness). Plus, the only thing that prevents the lug is pressing the throttle hard enough (probably about 25%) to cause the transmission to downshift which will definitely use more fuel. Ford needs to change the programming (put out a TSB with a reflash) to, at a minimum, unlock the converter on throttle tip-in below 1500 RPM (and probably have the trans drop a gear as well). I hope more people pay attention to this issue and report it to their dealer. We also need to tell the dealer to report it to Ford corporate, so they realize there's an issue (which I have already done, but it will take far more than one person).

Mine does the same thing also but at 1600-1700 or so. Sounds like it's right behind the radio. Grinding/rattle sound. I posted a video on Facebook. On the Ford maverick page. It won't let me post here. Mine did it off the lot. I didn't notice it until a few hours later.

 

[rlelliott]

Mine does the exact same thing and is most obvious around 35 mph. It actually happens at any speed where the engine is below 1500 rpm and the throttle is applied (lightly enough that it doesn't downshift or unlock the torque converter). The vibration and noise, caused by the lugging, is just much more noticeable at low speeds because there is less road & wind noise/vibration.

I'm a mechanic with over 30 years of experience and it's obvious to me the problem is in the PCM/TCM programming. The programming is keeping the transmission in too high of a gear and keeping the torque converter locked, which is causing the vehicle to lug (like a manual trans in 4th gear when it should be in 2nd). This lug is causing engine/transmission/driveline vibration until it reaches that 1400-1500 RPM point. I'd guess this programming was done in an attempt to keep RPMs as low as possible for gas mileage, but it definitely causes unwanted (and possibly damaging) NVH (noise, vibration, harshness). Plus, the only thing that prevents the lug is pressing the throttle hard enough (probably about 25%) to cause the transmission to downshift which will definitely use more fuel. Ford needs to change the programming (put out a TSB with a reflash) to, at a minimum, unlock the converter on throttle tip-in below 1500 RPM (and probably have the trans drop a gear as well). I hope more people pay attention to this issue and report it to their dealer. We also need to tell the dealer to report it to Ford corporate, so they realize there's an issue (which I have already done, but it will take far more than one person).

I have this exact same issue in both normal and economy modes. Obviously doesn't do it in other modes because of different shift points. Dealship says no problem found and just drive it in sport mode all the time (typical stupid dealship answer). I came to the same conclusion and made this suggestion to the dealership but they won't admit there is even a problem, ehen it is obvious.

 

[Dodeboost]

Mine does the exact same thing and is most obvious around 35 mph. It actually happens at any speed where the engine is below 1500 rpm and the throttle is applied (lightly enough that it doesn't downshift or unlock the torque converter). The vibration and noise, caused by the lugging, is just much more noticeable at low speeds because there is less road & wind noise/vibration.

I'm a mechanic with over 30 years of experience and it's obvious to me the problem is in the PCM/TCM programming. The programming is keeping the transmission in too high of a gear and keeping the torque converter locked, which is causing the vehicle to lug (like a manual trans in 4th gear when it should be in 2nd). This lug is causing engine/transmission/driveline vibration until it reaches that 1400-1500 RPM point. I'd guess this programming was done in an attempt to keep RPMs as low as possible for gas mileage, but it definitely causes unwanted (and possibly damaging) NVH (noise, vibration, harshness). Plus, the only thing that prevents the lug is pressing the throttle hard enough (probably about 25%) to cause the transmission to downshift which will definitely use more fuel. Ford needs to change the programming (put out a TSB with a reflash) to, at a minimum, unlock the converter on throttle tip-in below 1500 RPM (and probably have the trans drop a gear as well). I hope more people pay attention to this issue and report it to their dealer. We also need to tell the dealer to report it to Ford corporate, so they realize there's an issue (which I have already done, but it will take far more than one person).

Perfect explanation. Mine did this for the first time today as well. Vibration is exactly like when you forget to downshift a manual or you almost stall it. Lugging the engine at 1200 rpm. Did anyone here ever find a fix for this?

 

[TC in MN]

I too have the vibration issue most prevalent at a steady 25 to 30 mph, my dealer has said there is no issue, so I use sport or tow/haul in traffic.

The only addition I can offer is when the vehicle is cold it shifts correctly, keeping rpm’s higher at lower speeds. Once the vehicle is warm, the upshifting issue happens.

Perhaps ironically, but when getting on the freeway on a straight on-ramp the shifting is near perfect in every drive mode. Whatever the fix is, it most likely will not be as easy as we all hope for.

 

[Dodeboost]

I too have the vibration issue most prevalent at a steady 25 to 30 mph, my dealer has said there is no issue, so I use sport or tow/haul in traffic.

The only addition I can offer is when the vehicle is cold it shifts correctly, keeping rpm’s higher at lower speeds. Once the vehicle is warm, the upshifting issue happens.

Perhaps ironically, but when getting on the freeway on a straight on-ramp the shifting is near perfect in every drive mode. Whatever the fix is, it most likely will not be as easy as we all hope for.

Same here. Although it does seem like something a software update to the Tcm/pcm could fix as @Fordguyw said. Hopefully ford comes out with an update for this.

 

[Franklin78]

Following. Mine is doing the exact same think at low rpm. Picked it up a week ago and just noticed it a few days back. It kind of sounds like a frog croaking until the transmission changes gears.

 

[Andrew1966]

Mine does the exact same thing and is most obvious around 35 mph. It actually happens at any speed where the engine is below 1500 rpm and the throttle is applied (lightly enough that it doesn't downshift or unlock the torque converter). The vibration and noise, caused by the lugging, is just much more noticeable at low speeds because there is less road & wind noise/vibration.

I'm a mechanic with over 30 years of experience and it's obvious to me the problem is in the PCM/TCM programming. The programming is keeping the transmission in too high of a gear and keeping the torque converter locked, which is causing the vehicle to lug (like a manual trans in 4th gear when it should be in 2nd). This lug is causing engine/transmission/driveline vibration until it reaches that 1400-1500 RPM point. I'd guess this programming was done in an attempt to keep RPMs as low as possible for gas mileage, but it definitely causes unwanted (and possibly damaging) NVH (noise, vibration, harshness). Plus, the only thing that prevents the lug is pressing the throttle hard enough (probably about 25%) to cause the transmission to downshift which will definitely use more fuel. Ford needs to change the programming (put out a TSB with a reflash) to, at a minimum, unlock the converter on throttle tip-in below 1500 RPM (and probably have the trans drop a gear as well). I hope more people pay attention to this issue and report it to their dealer. We also need to tell the dealer to report it to Ford corporate, so they realize there's an issue (which I have already done, but it will take far more than one person).
[/QUOTE


I have 4000m on mine. And I noticed right away the same thing
I

Mine does the exact same thing and is most obvious around 35 mph. It actually happens at any speed where the engine is below 1500 rpm and the throttle is applied (lightly enough that it doesn't downshift or unlock the torque converter). The vibration and noise, caused by the lugging, is just much more noticeable at low speeds because there is less road & wind noise/vibration.

I'm a mechanic with over 30 years of experience and it's obvious to me the problem is in the PCM/TCM programming. The programming is keeping the transmission in too high of a gear and keeping the torque converter locked, which is causing the vehicle to lug (like a manual trans in 4th gear when it should be in 2nd). This lug is causing engine/transmission/driveline vibration until it reaches that 1400-1500 RPM point. I'd guess this programming was done in an attempt to keep RPMs as low as possible for gas mileage, but it definitely causes unwanted (and possibly damaging) NVH (noise, vibration, harshness). Plus, the only thing that prevents the lug is pressing the throttle hard enough (probably about 25%) to cause the transmission to downshift which will definitely use more fuel. Ford needs to change the programming (put out a TSB with a reflash) to, at a minimum, unlock the converter on throttle tip-in below 1500 RPM (and probably have the trans drop a gear as well). I hope more people pay attention to this issue and report it to their dealer. We also need to tell the dealer to report it to Ford corporate, so they realize there's an issue (which I have already done, but it will take far more than one person).

Mine does the exact same thing. It’ll decide to upshift when it was just fine at 15/1600 rpm yielding 11/1200 rpm and “lug” until you press down on the accelerator. VERY annoying. Shift sequence on acceleration say 0-60 is perfect. What I have found is that in general a speed ending in a 5 and if you stay on that speed……wI’ll prevent an upshift usually. So going through a 25 I set the cruise at 25……35 and 45 the same. Driving in normal mode at 30 will put you in a lugging 1200 rpm.

A work around for me, (at least till Ford comes out with a new TCM bulletin and reflash), is to use tow/haul when driving around town. Normal mode for everything else.

 

[Andrew1966]

Same here. Although it does seem like something a software update to the Tcm/pcm could fix as @Fordguyw said. Hopefully ford comes out with an update for this.

same exact thing here.
2.0 4k

 

[Jump Start]

My 2.0 AWD does the same thing between 1500 and 2000 RPM in normal and eco mode. It is a steady vibration felt in the steering wheel under light acceleration. It appears to be ok in sport mode.

 

[TC in MN]

Mine does the exact same thing. It’ll decide to upshift when it was just fine at 15/1600 rpm yielding 11/1200 rpm and “lug” until you press down on the accelerator. VERY annoying. Shift sequence on acceleration say 0-60 is perfect. What I have found is that in general a speed ending in a 5 and if you stay on that speed……wI’ll prevent an upshift usually. So going through a 25 I set the cruise at 25……35 and 45 the same. Driving in normal mode at 30 will put you in a lugging 1200 rpm.

A work around for me, (at least till Ford comes out with a new TCM bulletin and reflash), is to use tow/haul when driving around town. Normal mode for everything else.

At first read I thought, no way….tried the 5 mph idea and it worked! I really like my Mav, but the transmission in traffic (save the 5mph idea) regrettably wants to lug, taking away a good part of the driving experience with the 2.0, awd, tow with 235/65/17 WildPeaks. Tow/haul works, but for me, is too aggressive.

 

[Andrew1966]

At first read I thought, no way….tried the 5 mph idea and it worked! I really like my Mav, but the transmission in traffic (save the 5mph idea) regrettably wants to lug, taking away a good part of the driving experience with the 2.0, awd, tow with 235/65/17 WildPeaks. Tow/haul works, but for me, is too aggressive.

Indeed, you should notice on decelerations a downshift right at the 36 and 25/26 mph ……..then hold it right there exactly.
The ironic thing it keeps one from getting a speeding ticket LOL.

30mph will always result in a luging situation as previously stated so if on extended 30mph drive switch mode to tow/haul sport. I find tow/haul much better than sport cause imo sport is ridiculously on the other side of the spectrum.

One could almost treat tow/haul as the normal mode and normal as a highway/overdrive mode.

tow/haul …….city
normal …….country and highway.

Like many here I sure hope Ford addresses this cause until they do I only give the 2.0 Mav an 8/10 otherwise would be 10/10 imo.

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