I've had the intake on for over 8 months now with no problems before. You think the tps sensor could be the problem? Any way to check it before replacing? I hate buying parts that don't fix the problem. Already spent 150 parts wise with no fix yet. I'm going to do the intake manifold rebuild today, and replace the fuel filter which hasn't been changed in who knows how long (its a 98). Also going to replace spark plugs.