Shifting Reverse to Drive lurch

[dcgibs]

If I put into R and backup some, then stop and shift to D. I can feel the whole truck moving. Is this normal? Anyone else notice a lurch when shifting back to drive?

It happens often, but every so often it seems to go smooth.

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[Fjsteven]

Mines done that a couple of times. Its not enough for me to be able to track it down or recreate it.

 

[P. A. Schilke]

If I put into R and backup some, then stop and shift to D. I can feel the whole truck moving. Is this normal? Anyone else notice a lurch when shifting back to drive?

It happens often, but every so often it seems to go smooth.

Hi,

Basic question...Are you coming to a complete stop before selecting Drive?

best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

 

[dcgibs]

Yes. If i reverse for a bit come to complete stop, even wait, shift back to drive, keeping brake fully pressed. The vehicle rocks which doesn't seem like it should. This shift seems to take a long time too.
If I shift from P to drive don't feel anything. But after using reverse a bit, then shifting back to drive. It like the truck is on a boat in light chop.

Another thing I noticed, don't know if this is correct action. I can't shift directly from reverse to "S" mode.

 

[HighFivenWhiteGuy]

I also have that lurch when shifting out of reverse and also when shifting into reverse. The lurch into reverse is much worse, that transmission really slams into it. I figure this is something related to the rough shifting TSB, which I will try and have performed at my 10,000 mile service.

 

[P. A. Schilke]

Yes. If i reverse for a bit come to complete stop, even wait, shift back to drive, keeping brake fully pressed. The vehicle rocks which doesn't seem like it should. This shift seems to take a long time too.
If I shift from P to drive don't feel anything. But after using reverse a bit, then shifting back to drive. It like the truck is on a boat in light chop.

Another thing I noticed, don't know if this is correct action. I can't shift directly from reverse to "S" mode.

Hi David,

Ok Thanks! Going to cut to the chase on this one...What you are doing is just fine, so I suspect what is happening is a torque reversal...that is that when you back up the truck (4x2 or 4x4?) you wind up the slack in the powertrain and then selecting drive the driveline unwinds and then winds in the other direction...You feel and maybe hear an audible clunk. We need to ID if there is something amiss.. It is going to take two people. Park in a level surface. Set the parking brake. kneel next to the vehicle starting at the back. Have the other person, engine running of course put the vehicle in Reverse while their food is on the service brake pedal and then with you watching the rear axle, driveshaft rear u joint (do not put your head under the vehicle, just in case) See if you notice any motion between parts...Might only be a few degrees but note any motion...Now repeat the process watching the front u joint of the rear drive shaft. Note the motion of the slip yoke, u joint. This will verify everything is tight...any noticeable slop may indicate a problem...I know almost nothing about this 10 speed transmission or transfer case if you have a 4x4..(not in your profile which you have...4x2 or 4x4).

Assuming you notice nothing indicating something out of whack, try this if you can depending if there is a slope involved. Reverse as you do normally. Now holding the brake, shift into neutral for a moment Which should unload the powertrain, then shift into Drive or S Any difference? I do not notice any appreciable clunk in my 4x4 driveline, so am a bit worried something may be wrong, hopefully not systemic..

Hope this helps somewhat..

Best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co, Retired

 

[dcgibs]

Sorry about not including, but is 4x2. That definitely sounds like it might be a source. The lurch does feel like something is unwinding and not gracefully, it takes 3-4 seconds before drive is usable also.

 

[dcgibs]

I also have that lurch when shifting out of reverse and also when shifting into reverse. The lurch into reverse is much worse, that transmission really slams into it. I figure this is something related to the rough shifting TSB, which I will try and have performed at my 10,000 mile service.

I had the TSB done for that. It didn't change that rough shift from R to D.

@P. A. Schilke I will give that test a go and see if I can determine anything. Thanks

 

[mike]

Mine has the lurch/slam/clunk/bang as well. It's not consistent, but when it happens, it happens in reverse and drive. I can put it in park, then put it in reverse again...bang. put it drive...bang. I can turn the engine off, then back on...bang.

But it's not consistent. I thought..
1. Had to do with warming up. But I sat in my driveway yesterday morning for around 5 minutes messing around with my entertainment system. When I put it in reverse.. Bang! Backed down the driveway and put it into drive (after a full stop)...Bang! Drove it all the way to work and when I got to work, I stop and put it into reverse,park,reverse,drive,reverse,drive....nothing. Felt fine.

This morning, I didn't let it warm up at all. Started it, put it into reverse and went...no issues.

2. Maybe, as mentioned above there was windeup in the driveline. Backed down the drive way this morning and when I got to the bottom, I put it into drive while it was still slightly moving backward. Smooth as silk.

Who knows. It's happened about 4 times in 1300 miles. Just another strange quirk. I have a warranty so don't really care if something breaks. I'll mention it when I go in for my oil change, but if it's not repeatable on a consistent basis, there's nothing the service department will do.

Would the transmission being low on fluid cause this?

 

[P. A. Schilke]

Hi Folks,

Starting to sound like possibly a calibration issue. When talking to the dealer, use the term "Harsh R to D engagements" and "R to D delayed engagements" Hopefully the dealers understand those terms.

Best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

 

[P. A. Schilke]

mine wont.
there first second and third responses are always the same.

"there's no problem."

then after persistence, and threats they usually will offer to test drive it at least.

Hi,

Sad when the Dealer won't listen to the customer. Dealers are not Ford Employees but independent contractors and believe me I hate to have to got the the dealer for anything... I told my Ranger team that our goal was to keep the vehicle from ever having to go back to the dealer...Keep the vehicle out of the dealership experience. All I can do is wish you good luck!

best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired.

 

[THLONE]

Another question, are you using your left foot on the brake. Too me it sounds like the eng is not at idle when shifting. Some people with big feet can push on the gas while pushing on the brake.

 

[P. A. Schilke]

Another question, are you using your left foot on the brake. Too me it sounds like the eng is not at idle when shifting. Some people with big feet can push on the gas while pushing on the brake.

Hi Thom,

Good point....Me...not a left foot braker... but when driving a manual, I heal and toe..

best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

 

[dcgibs]

I was testing shift P to D and R to D and the delay in accelerating after shifting.
There is a very noticeable delay in R to D and having the gas work vs P to D and having the gas work.
It doesn't seem normal for the R to D.

 

[THLONE]

To test my theory I raised the RPM of my own truck and dropped it into Rev. I then dropped into drive while raising the RPM. The trans did not go hard into gear either time. The trans went into gear slowly and smoothly even at a higher than normal RPM. So, I would say that your trans has a malfunction.

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