Ecoboost Map Sensor Cleaning
 

Just thought i would post this here. My truck has 51,450 miles on it and for the last month it has been acting different.It Seemed Lazy, Fuel Mileage was down, Idle was a little rough and just overall seemed like a different truck compared to what it should.

I pulled all 3 Map Sensors today and gave them a good cleaning with CRC MAF cleaner and my truck is back to running like a brand new one. Its got the pep back and fuel mileage is back.

The Map Sensor on the Air Filter lid was still clean and new looking. The 2nd sensor on the intake piping right before the Throttle body and the 3rd sensor on the top of the intake was dirty/oily.

Here is a few pics of locations for anyone interested in doing this. After seeing mine i would recommend cleaning them every 20 or 25k miles.

1st Sensor on Air Filter Lid. I didn't take the sensor off just sprayed it with the lid off.

Attachment 3257



2nd sensor with 2 Torx Bit Screws

Attachment 3258


3rd Sensor with 1 8 MM bolt on driver side of truck


Attachment 3259

At 55k miles i am noticing the same issue.

rough idle: really notice it when off throttle and rolling to a stop
fuel mileage: down to 14, was in the high 16's
low RPM power: i know we have some turbo lag, but this seems to have lost some of that low end grunt or lugging power i was used to.

i am due for an oil change and was going to let the dealer check it out while there, if they don't find anything I will have to give this a go.

I would suggest disconnecting the battery while doing this. That way the PCM will relearn everything with the clean sensors. I was thinking about doing this soon, with almost 98k on the clock it's due.

If you are still running the original plugs then i would bet that may be your problem. Most recommend changing plugs every 40k and some even change ever 20k. These engines are hard on plugs.

Very good idea Joe.

Good idea, crusher fx4; I'm glad you'll be mentioning this to your dealer. Come back and tell us how the appointment goes. I'll be here if you need any assistance after getting your truck diagnosed.

Crystal

i changed them at the 40k mark. Motorcraft SP534 plugs gaped at .030 (I know some say go down to .028)


Will do, I have a pretty good dealer in the area.

That's what I like to hear, crusher fx4; I'll keep my eyes peeled for your updates.

Crystal

Interesting
 

Hello Everyone, this is my first post, please bare with me. I recently bought my first EB upgrading from an 05 5.4L. I purchased a 2011 XLT 6.5' bed with 3.73's and 46K miles. It's a terrific truck and I love just about everything about it. However, a few things started happening this passed month, one of them the rougher idle (almost solely when in gear and on the brake) and another one the loud HPFP. I've been doing a lot of reading on both and this is the first thread i've come across suggesting cleaning these sensors. My questions then are this:

I bought it from a dealer, should I assume they didn't do any 40K maintenance and do the plugs/oil/map sensor cleaning myself?

I hate hate hate the noise of the HPFP, is there a way to quiet it down (someone mentioned marvel mystery oil in the gas) ?

Lastly, if my truck idles nice when in park, but vibrates when stopped in gear, is this potentially another issue all together?

Thanks in advance for your thoughts. Sadly Crystal, the dealers in my area have been far less than impressive so far.... :(

Muttdog, welcome to the forum and to the world of EcoBoost.

Personally, I'd stay away from Marvel Mystery Oil. I think it's akin to snake oil and is not correcting the actual issue.

I'd also assume there was no 40K maintenance done and I'd have a look at the sensors and plugs. In Park, there is no resistance to engine rotation since the torque converter is disconnected from the engine. I think the added resistance when in gear and stopped is reducing your RPMs enough for problems in the plugs and sensors to have an effect.

I don't have any advice on the noise. My engine is wonderfully quiet, but I've only got 21K miles on it. I'm still learning things about my truck though, and suspect others will have better advice.

- Jack

Make sure the foam cover is securely on the HPFP. It's on the drivers side valve cover about cylinder 5 & 6. If it's loose more noise will be heard.

Thank you JackandJanet and Wookie. I had planned on starting with the plugs and going from there. On that note, I've read in numerous places so many different gaps to go with, most between .28 and .30. If I start with plugs and the MAP sensor cleaning stated in this thread, would it also be good to install a catch can to kind of "start fresh" ? This whole boosted v6 world is far different than the good ol OHC 5.4 that I used to have.

In regards to the HPFP, if the cover is on and on securely, are there any other options? I start to hear it as the truck warms up, and when it is warm, I can hear it in the cab no matter where I am. Sometimes, even over the radio.

Check out Labnerd's posts on oil quality. Make sure your engine has the proper weight oil in it (which is heavier than what the other Ford truck engines use). Mine had the lighter oil put in at the first oil change by accident, and the engine was noticeably noisier. (I had that oil replaced as soon as I found the mistake.)

I think with the proper quality oil and appropriate oil change intervals, catch cans are not needed. But, that's just my opinion.

I don't hear my HPFP at all, and I've got good hearing. :) I have no idea what they cost, but possibly yours needs to be replaced?

Personally, I'd use the Ford recommended plug gap, which I think is .30.

- Jack

On a factory tuned truck I wouldn't go smaller than .030", there's no reason to. Are you sure it's the HPFP your hearing? All of the EB trucks I've heard have a faint hollow ticking at idle which is the HPFP. I've never heard it inside of the truck and at more than idle engine speeds. There might be an exhaust leak that you're hearing.

Oops! I was off only by a factor of 10 - no big deal right? :scared: :surrender: (Serves me right for not looking it up!) Thanks, Wookie! :beers:

- Jack

You sure it's not the vacuum pump you are hearing? Those are also known to make a racket.

You'll have to find a lot stronger of coils to run that much gap.
I didn't even notice it till you said something. I picked up a new set of plugs for my truck today. Once I get my brother's piece of Chevy finished I'll get them done. Then I have to put a heater core in my wife's Beetle. Yuck!

Plugs and MAF cleaning
 

Alright, wanted to give an update. I replaced the plugs, all 6 were over .040 gap that were in it. Problem #1 fixed. Next, cleaned the MAF's per the instructions on this thread using CRC MAF cleaner, much much better idle, but only while cold. When the truck warms up now, it seems that the idle while steady on the tach, is now rougher. I'm wondering if perhaps there's a transmission/Torque converter issue here. Also, it seems my HPFP is getting louder. I guess its times to bring it in to the so-so shop here for some warranty work.

I will say this though, with the MAF cleaning and plugs, my city mileage increased from 14-ish to 17-ish, so I am happy with that!! Thank you!

SP, Pretty sure there's no exhaust leak as it doesn't seem to make as much noise when the truck is cold. As for the vacuum pump, I'd be surprised if its that loud too. I'll try to get a vid of it and post it here.

Ok, tell me if this link doesn't work:

https://photos.google.com/share/AF1Q...NjUjhtdnhFRk1B

This is a video of the sound I'm talking about, right after doing plugs and MAF cleaning. I swear its gotten louder since.

Did you disconnect your battery while you were doing the work? The PCM might be off because of the old values.

Secondly, the tach isn't a good gauge to see how the idle is doing. A lot of manufacturers set the PCM to hold the tach needle steady at idle instead of showing the actual values.

Yes, I did indeed disconnect the battery. I didn't want to take the risk of messing anything up.

Alot of fella's on other groups swear by the Marvel Mystery oil, i added some in the fuel and it did make it more quiet, Got on this forum and got blasted for using it :lol:

Since then i haven't used it anymore and while it is louder its not to bad and have come to the conclusion that its very normal.

I have a question, would different grade or brands of fuel make the HPFP louder than usual?

I thought about the fuel grade too. So lately I've been running premium. Seems to have no difference at all. I've heard other trucks with the hpfp noise, but I swear mine seems way louder. I'll be calling the local dealer here next week for an appointment.

The HPFP is typically kinda noisy. I've heard them make a ticking/knocking sound in lots of different cars.

Very Bad Mileage Still!!
 

Hello everyone. New to the forum and have may questions and concerns. I bought a used 2013 F150 Supercrew XLT Sept. last year. This truck has the 3.15 rear and stated on the lie-o-meter then that the average was 21MPG. My wife and I took a trip to Nashville from Chattanooga the very next weekend and I got 23.1 MPG. This was also reflected that same when I did the math at the next fill-up. I also noted the lose in power on WOT from water ingestion from the CAC. It was a very rainy day. All was well with the ECO even though I was pulling about 2700lb every weekend. I was getting about 17 average per tank and noted about 22 when on a trip. Then I heard the cladder on startup that has been described as issues with the timing chain and phasers. I have a video recording of this sound. It does not happen every start and sometimes not at all for weeks. After this I noticed MPG dropped significantly. I was down to 14 MPG and at most 19 on the hwy. I took the truck in to the dealer,told them what was going on, explained the low MPG, and showed then the video of the sound it was making. Basically I was told that they could not hear the sound at start up and that the reason I was getting low MPG was because of winter fuel. The would not do anything to fix ether issue. That was at 45000 miles. I now have 52000 miles, it is June and I am still getting 14-15 around town and 18-19 on the hwy. I have kept the trip #2 running since I bought the truck and not reset it. With 7000 miles it is stating an average of 16 mpg. I changed the plugs I think at 47000 and it did not help. I have read about the cleaning of the MAF sensors so that is next. I love my truck but hate the fact that if there is no code and he cant replicate, my dealer will not fix the problem. Some of this I can understand. But when you have the noise recorded and it is a know problem (everywhere on the forums) and I am getting very poor mileage, why was there a check not made to see if something was amiss causing these issues.
Sorry to rant but had to get it off my chest. Not having good luck in Chatt with dealer. Never have.

Couple things..

1. The mileage you are getting is still close. My 2013 on the window sticker is 15 city and 22 hwy. If your 4wd it drops by one to 14 city 21 highway. So the dealer isn't going to do anything about that.

2. When you changed the plugs what did you gap them too?

3. Tell your dealer they need to check the latest TSB on the timing chain rattle. It states if the customer hears it and says NOTHING that they have to replicate the problem. The previous tsb said they did have to replicate. If they still give you problems then find another dealer or get ahold of ford customer service

4. Are you running a catch can or do you have a small hole drilled in the intercooler for the moisture issue?

5. What oil change intervals are you running and what oil do you use?


Oh and one helpful tidbit about your fuel mileage, It may help if you reset the KAM. If you can unhook the battery in the evening and let it sit overnight.

Thanks
 

Thanks for the reply KingRanchCoy.

Answers:
1. Remember I am driving a truck that has the 3.15 gear in the rear end. The sticker states 19 city and 23 Hwy. I do not have 4WD and am running bone stock (no programmer).
2. I used the new plugs that were called for (cant remember number) and the all gapped at .030. The old ones I removed were all between .036 and .038.
3. I had the TSB :fyi:when I went to the dealer and gave it to them. They still would not do anything because they could not replicate even thought I had a video recording of the sound. BTW, I noticed this morning that the sound was present again but this time was very short and not as loud as the recording. Maybe because I was not paying attention.
4. No catch can and no hole. Am always afraid i will get shafted by the dealer here in Chattanooga. I still have about 8000 left on the powertrain warranty.
5. Changed the Oil the first time when the Oil life was at 10% I think I had put 5000 miles on it. When I changed I used the Pennzoil Platinum Full Synthetic 5W-30.

When I changed the plugs I disconnected the battery but it may not have been long enough to reset the Computer.

Thanks again for the reply. It just feels good that someone is willing to talk and aid rather than say "There is nothing we can do unless we can replicate the problem". The fuel mileage alone should have been a red flag.

John

You have done everything correctly with oil changes, gaps etc. It may be related to the timing chain rattle. Is there another ford dealer in the area? I have heard people having problems with the dealers on the chain rattle with the newest tsb and usually 2 things happens. 1 they show the service manager about them not having to replicate the problem, 2. making a call to ford customer service and then they get on the dealers butt and they end up doing it. May be a good idea to get ahold of the ford rep on this site, let her know whats going on and start a claim.

Id go ahead and clean the sensors just to see but i don't see you gaining the 4 mpg you need. Another thing is possibly remove the intercooler and clean it. I have used Simple Green and water inside the intercooler, slosh it around and let it sit for a little while, Then pour it out and pour some rubbing alcohol in there and pour it out ( seems to help with drying time)

Just recently i went ahead and drilled the intercooler since i had my first issue with the moisture issue, Pulled up on the interstate and it fell on its ass. Had to pull over and let it idle for a little bit and everything was fine. When i got home i drilled it and couldn't beleive the water and gunk that came out of it.

BTW had no clue the 3.15 was rated for 23mpg, Learned something new :thumbsup:

Thanks KingRanchCoy. I have noticed there being a rep the comes on to the forums every now and then. How does one get in touch or do they just monitor to see what is going on from time to time?

I'll just add, Drill baby, drill!!!!

Thanks for recommending us, KingRanchCoy! :thumbsup:

Welcome to the forum, azwatson! :welcome:

We do monitor it, and you can also send us a private message. In fact, please send over a PM with your VIN, and I'll do some research on my end. Which dealer have you been working with?

Rachel

Sorry Rachel, New to the forum and do not know how to do a private message.

OK just figured it out. PM on the way.

KingRanch, I made a mistake when I quoted 23. I did get that on my first trip to Nashville. I pulled the window sticker out so I could PM Ford Service and realized that it stated 16 and 22 with average of 18. I am still nowhere near that. have the second trip remembering from the day I picked up my truck and it is now down to 15.9. Had 49000 on the clock when I bought. I now have ~53000.

Got it, Tazwatson. Thanks! I sent you a response.

Deysha

Can I use throttle body cleaner because that's what I without damaging the sensors?

No!

Double post

Do you just remove the sensors and spray them down? My truck is doing the same things you described above.