im not blaming the filter kit,just wondering
cause thats the only thing ive done recently.
delaer reset the light last week and the code
said vacumm leak manifold?
i did have the filter on for a month before
this and it was fine,the light was reset ,no leak was found
and then today 5 days later came back on?

 

Check the gasket between the MAF and the filter kit, and make sure it is OK.

--Joe

 

the gasket seems fine , if the light is filter related
wouldnt it had given a maf or air charge sensor code
instead of vacumm leak code?

 

there is no such thing as a vacuum leak code.

I'd suspect that you are getting PO171 & PO174 lean banks 1 & 2.

there are also codes indicating HEGO lack of switching.

if the filter is overoiled you could get a MAF voltage code.

did the dealership give you the exact code numbers and descriptions?

see if you can find out. they should very easily be able to fix this situation by monitoring a few pids with a scan tool NGS or WDS.

what are the long and short fuel trims%? what are the HEGOs doing? what is the MAF voltage? what is the IAC %?

just curious, let me know what you find out.

they should be able to watch this stuff and see what is going on, and if you swap your factory filter back in and some of the parameters change, they will be able to let you know that it is your air filter or not. Some vehicles do set lean codes for aftermarket air filters, Lightnings however usually do not.

P.S. if your truck is under warranty, they should at the very least ask you to replace your factory filter before they can give an accurate diagnosis.

good luck.

later,
chris

 

Did you install a Boost By-pass kit?

 

thanks guys
e3lile
no boost by pass
superfords
all the service manager told me was they got a code
for vacumm leak and he said something about
manifold,i forgot how he worded it like
vacumm leak on or near the manifold,they said they cleared
the code couldnt find a vacumm leak and the code didnt come back on,then he said they called the ford tech hotline or infoline?
and was told it could be from overfilling the gas tank and vapors goin back into the engine or something,but the truck had 3/4 of tank when the light came on?the truck had the factory airbox when i took it in,i put the filter kit back the next day,i shoulda left
it off to see if the light came back with factory one.keep in mind
this was a lincoln dealer who said we hardly never see these trucks.
chris i appreciate your help,ill call them later and ask them
if they have the codes
later

 

no problem, and from the sound of that description, they are describing an EVAP or evaporative emissions leak. PO455 maybe? that is not a vacuum leak persay, the evap system has to catch and store the fumes/vapors that come off of your fuel tank and reintroduce them into the combustion process at an appropriate time.

If you have a leak in this system, the system is not closed and won't hold vacuum (means that the vapors will leak out). This is different from a typical vacuum leak that causes an engine to run lean or rough. This system is why everyone who forgets to tighten their gas cap gets a "check engine light". the cap being loose is just a big leak as far as the pcm is concerned. but their could be any number of problems that would set an EVAP code.

good luck.

later,
chris

 

Chris can you tell me what good long and short fuel trim % are?

 

if it is a 2000, you may have done what i did but fixed it before i started the truck. You have three vaccum lines that run from the intake boot.

One larger run that runs under the blower snout up to the top of the blower
On that runs down to the drivers side valve cover
One smaller one that runs to the vaccuum system.

When removing the smaller one from my oem set up, i yanked it out from one of the fittings near the back. Check that.


Also, if it's a 2000 and you don't have a chip, you will get an ses light for a lean code, happened to me when i sent my chip back for a reburn.

If you dont' have a 2000, i just wasted my typing..hehe. Good Luck!!!