Prometheus_Lens
TYF Newbie
- Joined
- May 11, 2018
- Posts
- 11
- Reaction score
- 2
Aloha to all. I apologize up front if a topic like this exists on the threads and I missed it. I might have overlooked a possible answer while searching the forums, but I have to ask it. I own a 2011 Tahoe LT, 5.3L, with 132,000 +/- a few miles. While I am in Park, the idle is at 600 rpms. However, while in gear, I am at 500 rpms while sitting at a complete stop. However, my Tahoe likes to dip a little under 500 rpms while decelerating (around 480 or so). Also, the transmission gets an unusual bump in rpm speed while I am slowing down to a stop as it goes from gear to gear.
What I have considered is this... 1) Is it the TPS that is going out and causing a bad output signal to the ECU; further causing a miss read in the transmission solenoid... 2) Is the alternator the issue because it is showing symptoms of not holding a charge on deceleration... 3) It is the transmission solenoids showing signs of down-shifting malfunction???
Again, I have already removed the Throttle Body and cleaned the crap out of that and the intake plenum. In the end, what I am trying to correct is low rpms while in gear, and low rpms while downshifting to a complete stop.
Thank you and standing by...
What I have considered is this... 1) Is it the TPS that is going out and causing a bad output signal to the ECU; further causing a miss read in the transmission solenoid... 2) Is the alternator the issue because it is showing symptoms of not holding a charge on deceleration... 3) It is the transmission solenoids showing signs of down-shifting malfunction???
Again, I have already removed the Throttle Body and cleaned the crap out of that and the intake plenum. In the end, what I am trying to correct is low rpms while in gear, and low rpms while downshifting to a complete stop.
Thank you and standing by...