https://www.f150online.com/forums/sh...threadid=75475

Dealer called & stated a faulty mass airflow sensor was found and will be replaced.

I never heard of any thread stating one of these sensors went bad.
Hopefully I can install the new spark plugs & make another pass
to end this..

 

Hey:

That's cool. Maybe there's hope for me yet.

Good luck. I hope that fixes it. I know for certain that its no fun having a slow Lightning.

Steve

 

I know exactly how you feel LXguy...I might as well be a poser driving an F150 with just a 5.4 dressed up like lightning...

All i can tell you man is don't give up like I am..Ive tried everything LOL..Maybe its time for the old bolt to croak..

 

Hey:

I couldn't have said it better myself. Fortunately, I am going on the dyno the day after tomorrow. They (Anderson Ford Motorsport) have dynoed lots of Lightnings.I will let you all know anything I find out.

They said they were going to run the 'ngs' on the dyno and see what that showed up. Also, they have an a/f meter, so I can find out if its just running pig rich or something.

Here are my biggest hopes for culprits.

1. Mass air meter
2. Overly rich fuel mixture (possibly related to #1 above)
3. intercooler problems

If its not one of those it might be something more serious like a tranny problem (though I would think it would show near normal hp on the dyno if that were the case).

Steve

 

To be honest I didn't realize something was a miss till I went to the TRACK..

Normal Joe Blow driving around would be never know..

Hopefully I'll get to the track in 2 weeks or so..

 

My MAF is being replaced as we speak, and another guy here on the list "Struck in AZ" had his replaced a couple weeks ago. It IS a common problem...