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Old 04-29-2020, 03:37 PM   #79 (permalink)
Tahoe_Hybrid
Master EcoModder
 
Join Date: May 2019
Location: California
Posts: 513

2020 - '08 Chevy Tahoe H
Last 3: 18.4 mpg (US)

2021 - '08 Chevy Tahoe H
90 day: 17.08 mpg (US)

2022 - '08 chevy Tahoe LT
Last 3: 14.38 mpg (US)

2023 - '08 Chevy Tahoe
Last 3: 22.61 mpg (US)

2024 - '08 Chevy Tahoe
90 day: 22.35 mpg (US)
Thanks: 2
Thanked 105 Times in 96 Posts
Quote:
Originally Posted by roosterk0031 View Post
I also had to replace the MAF pigtail. Swapped MAF sensors between the 3 cars I had at the time the had the same part with no change.
when it's close to the IAT temp it runs fine

outside on the temp of 75f it starts running hwerid
say 90F-95F or 45F etc..

the engine will oscillate then the transmission will refuse to move at all and will sit there revving the engine..

(transmission is not married to the Engine RPM)


as I can shift it to manual mode
(which just turns off Auto Stop, EV mode and changes the "shift points" it also married the Engine to the transmission, as Engine braking is now enabled)


there is no silver in the transmission fluid it's clean and fresh



it's really slow to respond sure the wires are good i all ready tried cleaning it etc..

there could be a cracked solder inside it or the sensor wire damage, i'm going to take it apart when i get a new one.. to see what failed

the connectors are clean and shiny ..


when it's at the IAT temp outside everything works fine.


Auto stop works
EV mode works
No sitting there engine revving
Transmission moves normally and smoothly

Last edited by Tahoe_Hybrid; 04-29-2020 at 04:21 PM..
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roosterk0031 (04-29-2020)