My son is driving my 300D and called to tell me that it is idling really rough. When he is a highway speed, it pretty much smooths out and seems to accelerate normally. I changed both fuel filters last week. Car has 258k and has always run great. Could this be an injector problem and should it cause any damage to drive it the rest of the week like this?

Thanks!

__________________
Wayne

the triumph of evil requires only that good men stand by and do nothing

13 Audi A3 TDI, the Wife's!
85 190D 5 speed, 195,000 miles
75 Triumph TR 6 w/Toyota 5 speed
2000 Ford F-250 powerstroke
03 Ml500, 109000