Hello!!! I'm new to this forum and hope someone can help. I have a 2007 Ford Escape with around 250,000kms. Mostly at highway speeds and occasionally around town it will sputter once or twice. No engine light is on to get a code. I've replaced the IAC but that didn't fix the sputters. Any ideas what the problem is?

 

It's always important to post the mileage and the last time the spark plugs were replaced. If whoever replaced the plugs was careless the plug wires are easily damaged.