: Rough cold idle...

06-01-06, 09:02 PM
Hi all,

I've got a '98 STS and when it's cold at idle it seems like it is missing, but no codes are thrown. It's almost like it's stumbling, but the revs never drop. It goes away once the car is warm.

Car has new plugs (or so the previous owner told me), what else should I look into? Fuel filter? Plug wires? The car has 150 000 kms, or about 90 000 miles.

06-01-06, 09:13 PM
If the wire are original, definately replace them.