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