okay so i have a 1995 prelude with a h23a doch vtec nd when i start the car and let it get to normal running temperature i run it and vtec kiks in fine for 2 or 3 times and then vtec doesnt want to kick in anymore until i let the car cool down again and do the same thing im really frustrated and i cant find the problem...ive cleaned the solonoid,check oil level...idk what else!