I did a search before I posted this and they all said the same thing, vaccum leak, MAF and or fuel problem. Okay so I have a 04' Heritage 4X4 with 76,000 with a 4.6 I recently put a spectra CAI (cold air intake) and a Deablo sport programer on it. Truck ran fine for a couple days then it threw the P0175. I have checked every vaccum line and cleaned the MAF sensor with the MAF sensor cleaner. Checked fuel pressure and replaced the fuel filter and it's still throwing the code. I did do a tune up on it in may and I put the motorcraft plugs in it. I don't know what else to do. Ford wants $100 to look at it. I really don't want to go that route. If there is something I missed or any advice would be great. Thanks in advance!!!

 

Looks like I get to go to Ford

 

I would contact Diablo first. That is a rich code and most likely has to do with the MAF set up in the CAI. Put the stock intake back on and see what happens. Ford is going to blame it on the tuner or intake.

Kev

 

Like kev said its a rich code that means you are not getting enough air. The new air filter should be the problem

 

Yeah thats what I figured Ford would tell me. Thats why I didn't want to take it to them. Diablo told me that my MAF sensor is dirty or may need to be replaced. I can't put the old setup back on cause I threw it away. The tubeing was craked on the ribs. Thats why I bought the CAI. I think I am going to buy a new filter cause the one I have is old. I feel stupid for nothinking of that before hand. I guess we will se what happens after I clean the sensor again and put a new filter on.

 

Okay so I think I fixed it. I had a old Spectra cone air filter on it and I bought a new small one and it works like a champ now. No codes or nothing at least so far. Hopefully it stays that way.