2015 odyssey runs rough when cold.......advice

Joined
Oct 3, 2010
Messages
2,424
Location
RI
Look at both. When you notice the fuel strategy go from open to closed loop, monitor the fuel trims.
 
Joined
Dec 9, 2007
Messages
558
Location
Owego, New York
Hi Everyone,
We have a 15 odyssey that runs rough when the engine is cold, until warm up 5-10 mins of driving.
It has 145K KMS or 90k miles.
I have replaced the spark plugs 2 months ago - put a VCM blocker on it - did 5 trans drains and refills - new vvt spool valve - right side engine mount. --Cleaned the egr before the winter.
Run 2-3 treatments of SL-1 redline over the last 2-3 months.
Fresh oil change 500 kms ago -0w-20.

After 5-10 mins of driving the engine runs great. Temps here are -10c to -20c on average.
Just started doing it.

No engine codes- no pending codes?
Any help on where to look would be great. Thanks
Scope for intake valve deposits. Misfire when cold, but not so much when warmed up.
 
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