2011 LML has fuel knock #8 800-1300rpm. All rates/flows within specs. PCM repair facility has seen this before and repaired PCM. Said it was common on only 2011MY. Installed new injector, pigtail and wires from #8 to PCM. Lasted 250 miles and did same thing. Fuel knock is not terrible but noticeable. Anybody have this situation? Any help appreciated. Thanks.
Fuel knock
- Thread starter DEWMO
- Start date
How did you diagnose it was number 8?
Have you tried any fuel additives?
Have you tried any fuel additives?
I can't say I've ever personally seen this.
You can cancel with the scanner or unplug it. Yes on additives. It’s done this twice after 250 miles and is gone for that amount of time after PCM replacement.
Does it show any codes? If so, what codes?
Where are you getting the injector from?
No codes. Sometimes only does it after run for an hour. Today only did it between 1100-1200 rpm. Let it sit for 3 hours and quiet when first started. No noise after running for 15 minutes. Apparently had to be hot. Will drive more tomorrow.
Scan tool and/or unplugging it while brake torquing and knock it present.
You mentioned you replaced the injector. Where did you source the replacement from?
No, the place you bought the injector from