It's a 96 v6 with 73,000miles at 60,000 I clean out the intake manafold so it shouldn't be that. As for mods all I have done to the engine is 8mm plug,K&N, and bosh plat4 and that was at 60,000 with the cleaning. The I1dle Air Control how can I test it to find out if its sticking. Can you you post a pic of how it looks like or tell where to find it.