Transmission Rev

[jspeer]

Has anyone had or noticed this before. I tried to explain it to the dealer this morning but I am not having much faith. I have a feeling they will say can't duplicate and brush it off.

Anyway has anyone noticed their RPM's increasing when decelerating? There has been many times when we would have to slow down for a hill or curve and when we take our foot off accelerator the rpm's would shoot up suddenly and then back to normal. It happens very often but only when decelerating. Fortunately the car does not lurch or anything. We can hear the engine and see the rpm guage go up with the engine rev.

I have a bad feeling the dealer may have trouble diagnosing this and with it being the transmission makes me real nervous. Hate to have an issue immediately after our warranty?

Anyone experience this before?

[boss377]

Originally Posted by jspeer

Has anyone had or noticed this before. I tried to explain it to the dealer this morning but I am not having much faith. I have a feeling they will say can't duplicate and brush it off.

Anyway has anyone noticed their RPM's increasing when decelerating? There has been many times when we would have to slow down for a hill or curve and when we take our foot off accelerator the rpm's would shoot up suddenly and then back to normal. It happens very often but only when decelerating. Fortunately the car does not lurch or anything. We can hear the engine and see the rpm guage go up with the engine rev.

I have a bad feeling the dealer may have trouble diagnosing this and with it being the transmission makes me real nervous. Hate to have an issue immediately after our warranty?

Anyone experience this before?

You figured it out yourself; the trans will downshift when descending a hill to use engine braking so you don't speed up. It only changes the RPMs a few hundred as it moves to a lower gear. I like the feature.

[peterk9]

Originally Posted by jspeer

Has anyone had or noticed this before. I tried to explain it to the dealer this morning but I am not having much faith. I have a feeling they will say can't duplicate and brush it off.

Anyway has anyone noticed their RPM's increasing when decelerating? There has been many times when we would have to slow down for a hill or curve and when we take our foot off accelerator the rpm's would shoot up suddenly and then back to normal. It happens very often but only when decelerating. Fortunately the car does not lurch or anything. We can hear the engine and see the rpm guage go up with the engine rev.

I have a bad feeling the dealer may have trouble diagnosing this and with it being the transmission makes me real nervous. Hate to have an issue immediately after our warranty?

Anyone experience this before?

Mine faithfully downshifts at 60kmph (40mph). The revs jump momentarily and I can physically feel the Explorer slowing down. Not sure if that is what you are experiencing. I can't say I have noticed the revs increasing at any other time when decelerating.
The Aggressive Deceleration Fuel Shut Off (ADFSO) system will interrupt fuel delivery to the engine during sudden deceleration but it does not increase your revs.

Peter

[SplashRI]

I have a problem with the transmission revving real high when I am accelerating on the highway and it's wet outside. When it goes to upshift it's like the transmission disengages, all the lights get very bright, my belt squeals, and then it catches with a thud and I move on. Of course with the lovely Ford technicians all they do is say "there was no code in the computer" so we can't do anything. Maybe I just don't drive it in the rain anymore.....

[peterk9]

Originally Posted by SplashRI

I have a problem with the transmission revving real high when I am accelerating on the highway and it's wet outside. When it goes to upshift it's like the transmission disengages, all the lights get very bright, my belt squeals, and then it catches with a thud and I move on. Of course with the lovely Ford technicians all they do is say "there was no code in the computer" so we can't do anything. Maybe I just don't drive it in the rain anymore.....

There is a TSB on the tranny but it isn't exactly like what you are describing. It is 11-9-11 6F50/6F55 TRANSMISSION - SLUGGISH ACCELERATION FROM 0-8 KM\H (0-5 MPH) FOLLOWED BY A HARSH BUMP OR A SLIP ON TAKE-OFF FOLLOWED BY A BUMP - BUILT ON OR BEFORE 4/15/2011

There is an explanation of the above on the thread 2011 & 2012 Ford Explorer TSB's on the main page.

Peter

[SplashRI]

Yea. It's in the shop now (for the customer satisfaction thing and the A-pillar rattle for the 2nd time) and I told them about the TSB, but they said they wanted the Service Manager to drive it home to see if he could duplicate it. But because there is no code they said they couldn't do anything about it until there was a code. Seems to me like if it's slipping when it's wet they could at least look around for some loose connections or something?

[jspeer]

Thanks for the replies...eases our mind a little. We got the couldn't duplicate today. I figured that it doesn't do it all the time but just hoping they knew. Sounds like this site is more useful. Just really hoping nothing was wrong and it doesn't sound like there is and at least it's documented at my dealer...

Got the customer satisfaction done today also...pick up tomorrow morning.

[SplashRI]

So an update to my issues...I get the old "Can not reproduce so it obviously isn't a problem". I hate it when they call and act like you are nuts because they think you are imagining problems. I guess I will continue to drive it and keep an eye out on these forums and see if someone else has the same issue. I really hope that this doesn't turn into the same fiasco I had with my 2006 Ex with all it's tranny issues....

[GWA1]

Don't let it go. PM Cory. He can help

[xplanfan]

Originally Posted by GWA1

Don't let it go. PM Cory. He can help

Cory can contact your local customer service manager (CSM) to get them involved. I'm not try to discourage you, but my CSM was not very effective is resolving my issues; however, you may have better luck with your CSM. I did get an extended maintenance contract out of the deal, so that is something.

[SplashRI]

Yea. I'll give it a whirl with Cory. Can't hurt. I already have to go back to get my A-pillar's fixed again next week (2nd time) so hopefully they'll get in touch before then.

[Trembler]

Just a couple quick questions.. Are you really flooring it.. To me your description sounds like the wheels are slipping on wet oily pavement and then the thump happens when they gain traction. Your traction control light would also illuminate. I have done this a few times at red lights. If you have 4wd however this prob would not happen. Mine is FWD and you can easily out torque the available traction on wet pavement such as leaving from stop sign or red light.

Originally Posted by SplashRI

I have a problem with the transmission revving real high when I am accelerating on the highway and it's wet outside. When it goes to upshift it's like the transmission disengages, all the lights get very bright, my belt squeals, and then it catches with a thud and I move on. Of course with the lovely Ford technicians all they do is say "there was no code in the computer" so we can't do anything. Maybe I just don't drive it in the rain anymore.....

[SplashRI]

Nope not flooring it...and I have 4wd. No traction control lights came on. In fact no lights came on at all...Which is why the mechanics say that I am crazy Think of it like you are accelerating to get on the highway. You are not flooring it, but you are getting after it to get up to highway speed. The other time I noticed it was when I had cruise set to 70 and it was going up a hill. In order to maintain the speed it downshifted and started to give it the gas....when it upshifted from there it slipped and did all the craziness.

[FordCustSrvc]

Originally Posted by jspeer

Thanks for the replies...Just really hoping nothing was wrong and it doesn't sound like there is and at least it's documented at my dealer...

Thanks for updating us, jspeer; let me know via PM if you’d like help.

Originally Posted by boss377

...It only changes the RPMs a few hundred as it moves to a lower gear. I like the feature.

Originally Posted by peterk9

Mine faithfully downshifts at 60kmph (40mph)...

Originally Posted by Trembler

...To me your description sounds like the wheels are slipping on wet oily pavement and then the thump happens when they gain traction...

boss377, Peter, & Trembler,

I appreciate you taking the time to lend a hand.

Originally Posted by SplashRI

Yea. I'll give it a whirl with Cory. Can't hurt...

I’m happy to help, SplashRI. Please be sure the PM includes your contact information, VIN, dealer name/state, and mileage.

Originally Posted by GWA1

Don't let it go. PM Cory. He can help

Originally Posted by xplanfan

Cory can contact your local customer service manager (CSM) to get them involved...

GWA1 & xplanfan,

Thanks for the shout-out.

Cory

[blwnsmoke]

Cory is great but the fact is, if they can't duplicate it, they wont do anything and the CSM will back the dealers decision.

The benefit is when they can duplicate a problem, Ford CS does a lot to help the process.

Hell, I turned 100,000 miles a couple weeks ago in my F250 which ended my extended warranty. My thermostat just went causing 40* temp swings randomly and Ford CS offered to pay 50% of the bill (thanks Cory for forwarding my info).

[1995E]

I kind of hate the feature of the transmission downshifting so I just shift into neutral while going downhill occasionally. The feature is used to help you save on your brakes and help you stop more easily in case of an emergency. I noticed that the feature most likely turns on if you release your foot from the accelerator too quickly prompting it to think you are going to emergency brake. So I have a slight press on the accelerator or I release the gas very slowly to keep it from downshifting. That's my 2 cents.

[VinceL]

We haven't experienced what the OP is describing. I'm wondering if the 2013's have a different transmission programming? We haven't noticed any of these things, or even the aggressive fuel cutoff thing. I was letting my wife know what it would feel like and to expect it, and that it is normal for the car, but we have yet to feel anything like it.

[peterk9]

Originally Posted by 1995E

I kind of hate the feature of the transmission downshifting so I just shift into neutral while going downhill occasionally. The feature is used to help you save on your brakes and help you stop more easily in case of an emergency. I noticed that the feature most likely turns on if you release your foot from the accelerator too quickly prompting it to think you are going to emergency brake. So I have a slight press on the accelerator or I release the gas very slowly to keep it from downshifting. That's my 2 cents.

I think that what you are experiencing may not be downshifting but the ADFSO system which interupts the fuel delivery to the engine during sudden deceleration. The fuel flow will resume normally with slight depression of the accelerator. This is the normal (fuel saving) operation of the vehicle. On the other hand, if your revs increase when this happens then it is not the ADFSO system. The only downshifting I have ever experienced, no matter what speed I was travelling at, was when the Explorer reaches 60 kmph or 40 mph. This is constant and the revs increase briefly.

Peter

[blwnsmoke]

I have a video of the 40mph downshift.. annoying as hell because it seems to take quite a bit of pressure/overreving to get it to upshift.

I took a video of it to show my dealer.. I definitely think Ford needs to get a reprogram out for this issue. It acts like it is in tow/haul mode where it is supposed to downshift to help brake/maintain speed without using the brakes. I've never had a vehicle do this without tow/haul mode on.

Dealer couldn't duplicate it.. I've found my cell phone with video camera is mandatory in my vehicles lol.

I'll post the video if I remember tonight when I get back home.

[peterk9]

Originally Posted by VinceL

We haven't experienced what the OP is describing. I'm wondering if the 2013's have a different transmission programming? We haven't noticed any of these things, or even the aggressive fuel cutoff thing. I was letting my wife know what it would feel like and to expect it, and that it is normal for the car, but we have yet to feel anything like it.

You really shouldn't 'feel' the ADFSO system when it comes on. It just helps in saving fuel. I have noticed both in my last Highlander ('09) and the Explorer that you really can't just coast anymore without the vehicle starting to seemly slow down on its own. I've become quite good in some cases of using that 'slowing down' along with the 40mph downshift to almost eliminate the need for a lot of braking at stop signs. I only use this method usually in the rural areas and when there are no vehicles right behind me.

Peter