Hello

I have a 2000 Ford F-150 and its running rough. Just had the Coil Packs and Plugs Replaced and Still running rough. Had the codes brought up and it tells me that the left and right bank are running lean. Any Help from Anyone. Thanks

 

Just Wondering what could possible do this???

 

Are the codes P0171 and P0174? Usually a vacuum leak, most common leak is the PCV elbow at the back of the throttle body/intake. It rots out and cracks.

 

Which parts did you use?

 

I Used all parts from Carquest and the plugs were motor craft. and when I had those done the code came up for the dpfe sensor so I changes that along with the hoses tat go to it. Now the truck feels worse then before I had it fixed. Heard from a cpl ppl that the Cadillac converters could be bad in it? was wondering if anyone else has heard that.

 

Get all the codes again.
I don't go by what you hear form other sources.
We address the issues as you accurately report them and answer questions when asked about what was done..
Good luck.

 

I Don't know the numbers of the codes but its still coming up with left bank running lean and right bank running lean. not reall sure on how to fix it.

 

What it means is that your truck believes more air is entering the engine than it monitored through the MAF.

You could start with the easy stuff, like looking for a vacuum leak as glc had mentioned. It happened on my old 2000. Rubber boot, back of the intake. Do a serach on this forum, there have been a lot of threads on this issue.

You could also try cleaning the MAF...be careful with this and read up on how to do it properly.

 

Whats the name on the coil box or better yet, the coils themselves.