Flat spot at 1500 RPM

Does anyone else have a flat spot around 1500 RPM?
To me it is kind of a stumble.
If I cruise at 1500 RPM and slowly accelerate, the engine bogs.
I checked the TSBs and nothing involving engine bogs.
I figured I'd ask here before I call the dealer.

Thanks,

Alan

Does anyone else have a flat spot around 1500 RPM?
To me it is kind of a stumble.
If I cruise at 1500 RPM and slowly accelerate, the engine bogs.
I checked the TSBs and nothing involving engine bogs.
I figured I'd ask here before I call the dealer.

Thanks,

Alan

I think it's because you are in Hawaii, even the cars are layed back and relaxed.

Yes, I noticed as soon as I picked up my truck that it got a little "weak in the kness" at almost exactly 1500 rpm. I wouldn't call it a bog, it's more of a hesitation or simple lack of power at that rpm. It would be nice if the power curve were a bit flatter thereabouts.

i would definatly call it a bog or a flat spot.
it does not run rough or anything so i assume that is just the way it is supposed to be.

Maybe the fuel curve needs to be adjusted...
Is the computer a chip or flash?


Alan

I have the same 1500 rpm problem. I feel it more when I'm slowing down. It feels like its holding back.

Have you tried resetting the drive by wire learning mode?

Disconnect the battery for about 1 minute, then re-connect.

You will need to:
Re-enter your radio presets
Re-enter your Radio's security code
Re-program your drivers auto down
Do the idle learn procedure
(I think that is all.....)

Hope it helps!

Have you tried resetting the drive by wire learning mode?

Disconnect the battery for about 1 minute, then re-connect.

You will need to:
Re-enter your radio presets
Re-enter your Radio's security code
Re-program your drivers auto down
Do the idle learn procedure
(I think that is all.....)

Hope it helps!

Great idea TL! I think it's from the way it was driven also. The break in period does do some injustice to drive by wire learning. (driving it different than "normal" use that is)

What is the idle learn procedure?

Is this "drive by wire learning mode" listed in the owner's or the service manual?

Thanks for the info...

Alan

After reading this thread about the 1500 rpm "bog" point, it made me think about my own comments about the transmission hiccup I had felt while decellerating. I made sure to look at the tach when I felt it the next few times and sure enough, it is happening right about at 1500. I do not think it is the drive by wire learning process, but rather a sloppy transmission programming job in the shift point at that rpm.

My RL had 2 mi when I picked it up and now has 1200 mi. I noticed the bog immediately. I figured it was just normal operation...guess maybe I was wrong

I have the exact same issue at about 1100-1200rpms while decellerating. It feels smooth, then hit about 1100-1200 rpms, at that point is gets a little rough (vibration), it hangs here for about 3 sec, then it kicks down a gear and (right to about 900RPM's) and is smooth again. Dealer says that if there is no engine light on, it is normal. Honda says they never heard of the issue. By the way, HONDA IS USELESS with ANY technical questions. I called 3 times with tow pkg questions, they are clueless.

i think mine is doing the same thing. when i take my foot of the gas, going slowly, the truck seems to bog down. i'll have to check the rpm's. mine i off the lot last week and noticed immediately. when i had them check it they "couldn't duplicate the problem". the rts i test drove did not seem to do it.

now i think i may not be crazy.

Mine does it, also! I've had mine for 2 weeks and noticed it immediately. By the looks of this thread it's something normal, but just doesn't feel quite right to me. If anyone comes up with an answer, please advise. Thanks. BGR

I have to take it in for some other warranty work.
I'll ask them if they can look into it...
The hardest part is having them duplicate it.
I'll let you know if they find something...


Alan

Many of us have this issue.

I always thought it was a downshift delay. Could that be it?

Yes, this particular issue with the truck has been my only bone of contention as well. To me, it seems to be a sort of "accelerator fade", most noticable when I round a corner, coming off the accelerator as I go in to the turn, then when I am through the turn and start bringing pressure on the accelerator again to bring me back up to speed, there is a VERY noticable lag time. And it seems like I'm pressing the accelerator down, down FOREVER until suddenly, it kicks in and almost kind of jumps in to gear...very annoying. And yes, it does it at highway speeds too around 1,500rpm, as was mentioned, but it's not as annoying and slightly less noticable at those speeds.

I had the Dealer mechanic check it and was told most re-assuredly that it is in fact, a normal phenomenon of this transmission. Gauging from what everyone here is saying too, I think he's right.

But in Honda's defense, if I'm not mistaken, I have noticed that when the truck is under a load of any consequence (like around 750lbs or more), this problem seems to diminish substantially, and the truck seems to shift a lot more smoothly...which leads me to believe that the way the Trans is set up has something to do with an assumed load that the truck will be under more often than not??? Just a guess.

Never heard of the "drive by wire learning system"...might try that re-set trick though and see if it changes anything.

Does anyone know if there are after-market chips available for the Ridgeline that can change up the way it shifts for those of us who don't do much hauling? Is this even a possibility on this truck?

a few years late on this one but.....

i have an 07 RTS with 40,000 miles on it. i've noticed that when crusing on a road, barely touching the accelerator, near or around 45/50mph and 1300-1500RPM there is what seems to be a slight bog or rough running condition. it seems like it's a flat spot there. anyone ever learn anymore about this?

After reading this thread about the 1500 rpm "bog" point, it made me think about my own comments about the transmission hiccup I had felt while decellerating. I made sure to look at the tach when I felt it the next few times and sure enough, it is happening right about at 1500. I do not think it is the drive by wire learning process, but rather a sloppy transmission programming job in the shift point at that rpm.

I to have this problem.

The transmission goes into lockup in 5th gear at around 47mph, depending on conditions. Throttle response isn't as quick while in lockup, as it tries to stay in lockup to increase fuel economy. Learning how to work the lockup on your daily drive is one of the best ways to maximize your fuel mileage.

Seems like there was a TSB out about 4 years ago that required some tweaking of the transmissions on some of the 06 models!!

can you please.........give detailed instructions on learning mode for rl. im not sure how it actually works or if it is somthing i need to look into also. where are all the honda techs out there????

The transmission goes into lockup in 5th gear at around 47mph, depending on conditions. Throttle response isn't as quick while in lockup, as it tries to stay in lockup to increase fuel economy. Learning how to work the lockup on your daily drive is one of the best ways to maximize your fuel mileage.

huh? explain lockup.

See post #6.

http://www.ridgelineownersclub.com/forums/showthread.php?t=31915