Just yesterday driving on the highway I heard a funny noise from the engine which was followed by the engine stuttering. I immediately pulled over and shut the engine off as soon as I could. My first assumption was the timing chain. The car just hit 130,000 miles and over the past couple of weeks what I thought was chain slap was getting louder in the engine bay (funny thing is that I was going to bring it in today to get checked out). This morning I took the valve cover/cylinder head cover off and found that the part of the timing chain which is visible appears to be intact and is taught. Is it necessary to take the timing cover off to see whether the chain is actually broken?? Is it possible that I was just experiencing a misfire condition?? Any help would be greatly appreciated before I take her to the local saab guy.