2002 honda civic SiR.
Lurching sensation when driving at any speed, any rpm. Most noticeable at 3500 rpm in 5th. rpm's do not fluctuate, not does speed. Engine power curve feels like the ac is being turned on and off every 1.5 seconds which created extra load on the engine.
Its very slight but annoying af. The same sensation with a loping idle but when car is under full power on a flat road with no other variables affecting it.
Vtec going on an off? AC going on and off?