JBaker

I have a 2012 Ecoboost, I seem to have a knocking when i accelerate slowly, especially while going up in terrain. Any idea? I kinda thought it was my intake at first or something. I'm not sure when it started, or if its always been there, doh! Originial owner, 38,000 miles

murdr

Can you record a video and attach it for us.

Does it knock at idle?
Can you hear it if you get out of the truck?

itguy08

If it's spark knock (pinging), take it in to the dealer. My Taurus had a bum knock sensor and it did the ping dance some times and under different loads. Had it replaced at 32k and it has not been an issue since.

From what I remember, it was a fairly involved procedure so best to let Ford pay for it.

vozaday

Are you tuned? If so remove the tune immediately and contact your tuner.

Everything above is good info but I also want to add the possibility of bad gas. Try a different gas station and try 91 or higher octane. There have been a couple trucks that have developed a ping on stock and went away when they tried a different fuel, seems to be some bad gas going around.

FordService

You're all full of great suggestions! Thanks.

I'm here to help, JBaker! Have you been to the dealer for this yet? If not, I suggest using this tool to schedule an upcoming appointment for diagnosis. Then, send me a private message with your full name, VIN, servicing dealership/appointment information, and best daytime contact number. I'll loop in your regional customer service manager for further assistance.

Brittany

JBaker

I tried to record it today, but of course it didn't make any noise. I will try again in the next few days when I drive it again (I have a work truck, and it's not from sitting cause I just got the work truck less than a week ago).

It's really hard to describe, it doesn't happen when I get on the gas, or cruising. It only seems to happen at slower speeds and at lower RPM. I will try all of the advice you all have given And update with a video.

Thanks!