Hello,

I am new to this forum. I have a 99 Expo. My problem is this. I was putting on a throttle body spacer. When I finished I put the intake back on but forgot to tighten it. A couple of days later I got a check engine light. Once I looked I noticed and tightened the intake. I reset the light. But now I have a studdering problem. It only happens when I start it in the morning and sometimes while driving on the highway. Is there any ideas anyoine can give me. Did something get dirty because on the intake not being on. Any help is greatly appreciated.

Doug