Avalanch3

Okay, first off, I own a '07 4.0 Automatic, and I noticed something weird with the RPM's on normal driving.

I don't know if this is a problem or whats wrong, but when I'm cruising at like 40-60 mphish (normal driving, AC off), when I slightly press on the gas, the RPM stays at around 1.5k rpm and does not move... I hear the engine roar a little bit but the RPM's do not move past 1.5k. When I put a little more gas it still kinda doesn't do it but when I press it more it kinda bogs forward and jumps the rpmg to like 3kish..

I only have 4050 miles on the car, there shouldn't be anything wrong with the car...

Any ideas on what it could be?

slackerkk

That's what mine does as well when it's in 5th gear the bogging is when it shifts back down to 4th while you push the gas harder. If you want to get the rpms back up before you press the gas just press the O/D button off on the shifter which will bring it into 4th gear then your rpms will jump a bit and yeah.

I dont' think it's an issue with the car but if it is i guess i got to get mine checked when i bring it in for the recall(which i still have done oops)

Avalanch3

When I turn the O/D Off it is fine, but with other gears the RPM's respond just fine.. only in that gear the RPM sticks to 1.5k

slackerkk

I think it's just the way 5th gear is on our cars but i could be wrong hopefully some one else responds as they might have a more accurate response.

Avalanch3

At 50 mph the car wouldn't be in 5th gear, it would more likely be 3rd gear. thanks for trying though

themac5150

Hmm... In my manual, in 5th gear, it's spinning around 1500rpms at 50mph. Why would an auto's 3rd gear be an overdrive?

Avalanch3

So your saying it is actually the 5th gear that has the problem? And that other people have this as well (the rpm sticking to 1500)?

themac5150

I'm not saying it's a "problem", just that the car, if you're not under a load, just cruising around 50mph, it's probably in top gear. It's an automatic, all of my past cars with autos responded like that. The computer wants to keep it in overdrive until IT determines that a downshift is required because you want to accelerate. If you floor it, does it act the same way?

Avalanch3

No, past a certain point of pressing the gas it downshifts and raises the rpms. But if I'm just cruising the RPM's don't bounce at all, freezes at 1.5k. Overdrive off, it goes to 2k rpm and when I press the gas lightly it shifts between 2k-2.5k, but with it on it just freezes at 1.5k rpm..

157dB

The problem is 'its an automatic'. []