2004 Honda Accord LX 4 cyl. 173k
Repairs in last year, starter, spark plugs and basic oil changes.
Car lurching with CEL at 2500 rpm, usually on a cold engine, going uphill.
Codes P2647 and P2652
-Changed oil and added coolant, since they were low, did not resolve.
-Replaced Oil Pressure Switch, did not resolve
-Replaced Oil filter d/t 45% flow and Vtec screen was cleaned or replaced, did not resolve.

All repairs have been done at Honda dealership, costing way too much time and money. HELP!

 

Mine was doing the same thing. I did many of the steps you did. I eventually had to replace the VTEC Solenoid swtich but is way cheaper to rep[lace the entire assembly. When I get home, Ill post the part number and where I sourced the part.

 

Sorry it took so long to come back:

https://www.carparts.com/details/Hon...B&gclsrc=aw.ds