Honda Start/Stop Warranty Extension

[Jimmy_Russells]

https://static.nhtsa.gov/odi/tsbs/2023/MC-10229678-0001.pdf

https://www.piloteers.org/threads/t...ranty-extension-2021-2022.178923/post-1794005

"Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically
due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately restart the
vehicle by selecting Park and pressing the ENGINE START/STOP button.
NOTE: If 23-008 Product Update: PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI software
must be updated first before the warranty extension applies.
Honda is extending the warranty coverage for valve adjustment to 10 years from the original date of purchase with no
mileage limitation"

I'm not sure if you meant to quote me or not but this pdf that does not seem to answer my question. It does clarify which vehicles the recall affects.

 

[tyman]

https://static.nhtsa.gov/odi/tsbs/2023/MC-10229678-0001.pdf

https://www.piloteers.org/threads/t...ranty-extension-2021-2022.178923/post-1794005

"Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically
due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately restart the
vehicle by selecting Park and pressing the ENGINE START/STOP button.
NOTE: If 23-008 Product Update: PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI software
must be updated first before the warranty extension applies.
Honda is extending the warranty coverage for valve adjustment to 10 years from the original date of purchase with no
mileage limitation"

That's interesting they're not including the Odysseys in that....

 

[The Critic]

I'm not sure if you meant to quote me or not but this pdf that does not seem to answer my question. It does clarify which vehicles the recall affects.

I did.

Incorrect valve adjustment will result in low engine vacuum, which can result in various drivability related concerns.

 

[Jimmy_Russells]

I did.

Incorrect valve adjustment will result in low engine vacuum, which can result in various drivability related concerns.

Ok but low vacuum can be caused by a number of things. Roofless mentioned if the valve clearance gets too far out of spec the system would not work. So if the vacuum is low it could be VC, but also could be something else like a broken or disconnected hose.

 

[slo town]

Ok but low vacuum can be caused by a number of things. Roofless mentioned if the valve clearance gets too far out of spec the system would not work. Monitoring vacuum isn't the same thing.

Our Honda Element began to nearly stall when shifting from reverse to drive. I took it into the dealer to have it checked. There was a voltage level of some sort they checked that indicated the valves needed adjusting. They adjusted the valves and the problem was solved.

Scott

 

[Oily_Thing]

You can just push the button to disable the feature. What is so hard about pushing a little button?

 

[Jimmy_Russells]

Our Honda Element began to nearly stall when shifting from reverse to drive. I took it into the dealer to have it checked. There was a voltage level of some sort they checked that indicated the valves needed adjusting. They adjusted the valves and the problem was solved.

Scott

They must be using the variable timing actuator. It would be cool if they could monitor each rocker but that seems excessive lol. It's kind of nuts they are still using solid valvetrain in plain jane cars anyway.

 

[KrisZ]

Ok but low vacuum can be caused by a number of things. Roofless mentioned if the valve clearance gets too far out of spec the system would not work. So if the vacuum is low it could be VC, but also could be something else like a broken or disconnected hose.

Valve clearance can affect how the engine starts, that was what Roofless suggested. And it’s true, if you ever dealt with an engine like that or with one that has a low compression, which out of spec valve clearances can cause.

The auto start/stop system is dumb and is most likely calibrated to a fully warmed up engine with proper valve clearances. If those clearances are too far out of spec, it will crank, most likely too shortly and not start.

Nothing monitors actual valve clearances. Us humans will simply hold the key a bit longer and get the engine started, not thinking twice about it. These automatic systems cannot adjust themselves it seems.

 

[RooflessVW]

Ok but low vacuum can be caused by a number of things. Roofless mentioned if the valve clearance gets too far out of spec the system would not work. So if the vacuum is low it could be VC, but also could be something else like a broken or disconnected hose.

Yea but if the cause is the valve adjustment, then it will be covered.

 

[RooflessVW]

They must be using the variable timing actuator. It would be cool if they could monitor each rocker but that seems excessive lol. It's kind of nuts they are still using solid valvetrain in plain jane cars anyway.

IIRC you can measure the MAF (MAP?) voltage to guesstimate wether or not the valve clearance needs adjusted.

 

[Hillbilly Deluxe]

What on the start/stop system would warrant an valve adjustments?

Nothing on mine. We didn't use it (always turned it off) and got rid of that vehicle (2019 Highlander) after 2 years. Went back to a pre-2015 Toyota....


HTH