First of all thanks to everyone for your help with everything so far, this site is awesome. Sorry to be posting yet another transmission thread but I couldn't find anything on my exact issue. I'm not even 100% sure it's the transmission, but it sure seems like it.
I've noticed this very slight issue for the last few weeks but it finally got much worse today to the point where I can actually observe the symptoms.
While driving, it feels as if the engine is cutting out or stuttering. The RPMs will fluctuate back and forth between say 1500 and 1750 rpm over and over. It does this in every gear, from 5th gear at a steady speed on the freeway down to at least 2nd going slowly up a hill.
Tonight I just did a train/fill of 3 quarts of fluid. The old fluid was quite dark. I've only replaced it once before at 120k, following the manual. My tranny has been replaced under warranty before I got the car, blue bolts and no oil jet kit.
When accelerating, everything feels fine. Every gear shifts smoothly. I have felt a slightly jerky shift into 3rd for a while, but after taking it out after the drain & fill even 3rd felt smooth. Only after driving at a steady speed does the problem start. It feels as if the torque converter lockup is engaging in and out, but that shouldn't happen at the low speeds I'm seeing this at as well.
Engine idle is fine, I can rev the engine in neutral to any RPM and it stays there steady. If it's engine related it's worse under a load, as in the lower gears the problem is worse as I go uphill.
There are no lights on the dash but there is a P1740 code I picked up with the scan tool.
Thanks in advance, hopefully someone can point me in the right direction!
I've noticed this very slight issue for the last few weeks but it finally got much worse today to the point where I can actually observe the symptoms.
While driving, it feels as if the engine is cutting out or stuttering. The RPMs will fluctuate back and forth between say 1500 and 1750 rpm over and over. It does this in every gear, from 5th gear at a steady speed on the freeway down to at least 2nd going slowly up a hill.
Tonight I just did a train/fill of 3 quarts of fluid. The old fluid was quite dark. I've only replaced it once before at 120k, following the manual. My tranny has been replaced under warranty before I got the car, blue bolts and no oil jet kit.
When accelerating, everything feels fine. Every gear shifts smoothly. I have felt a slightly jerky shift into 3rd for a while, but after taking it out after the drain & fill even 3rd felt smooth. Only after driving at a steady speed does the problem start. It feels as if the torque converter lockup is engaging in and out, but that shouldn't happen at the low speeds I'm seeing this at as well.
Engine idle is fine, I can rev the engine in neutral to any RPM and it stays there steady. If it's engine related it's worse under a load, as in the lower gears the problem is worse as I go uphill.
There are no lights on the dash but there is a P1740 code I picked up with the scan tool.
Thanks in advance, hopefully someone can point me in the right direction!