I was on my way to work in traffic, and when I hit a hill going up, I was actually slowing down while going up the hill due to traffic, but anyways, my car started to cough, and I was giving it gas, no go, so I put the pedal down about 1/2 way, and it reved a little then shifted down to the next lowered gear, and was fine. I have no clue what happened but to what I could tell it acted like when I had a 5spd and left it in 5th going 20mph and almost killing the car without downshifting. This was the 1st time it has done this. Anyone else experience this? The rest of the way to work it was okay.

2800 miles, 2002 CL-S.

 

Sounds like it was the 'grade-logic' kicking in.

Sounds normal to me... Not 100% sure though.

 

Usually it shifts down, but it acted like it had trouble or something and was about to staul the car, so when I gave it gas, it free reved and then down shifted. Dunno.

 

Did you notice if the revs on the engine were going up and down or was this with the transmission?

I have noticed a quiver or shudder that i think is coming from the transmission when I'm going slow up a hill, at the bottom of the gear range rpm.

and just like you, if i give it some more gas, it downshifts and is fine.

 

Exactly. It is low rpms, like 1500~. Engine revs would go up when I gave it gas and let off, then if I gave it more, it shifted then.

 

Sounds like the parabolic valve is sticking.

 

Whatever that is!

 

do you have problems in idle?

 

Nope, smooth.

 

The reason I suggested it was the 'grade logic' kicking in was when you mentioned you were slowing down and going up a hill. Were you in SS or D5?

My vote is still on the grade logic...

 

D5, no brakes, just letting off the accelerator. Hmmm...