Sensor failings. You could have one too!

Discussion in 'I4 2.3L EcoBoost Engine / Mods: Bolt-ons, Exhaust,' started by Blyman93, Mar 19, 2018.

  1. Blyman93

    Blyman93 Well-Known Member

    Vehicle(s):
    2016 Ecoboost Mustang (Black)
    Joined:
    Jun 20, 2016
    Location:
    Vancouver, WA
    Posts:
    335
    Likes Received:
    47
    0   0   0
    So Adam posted to Facebook a find on the Lowside fuel sensor going out on these cars causing lean events. Here's the post. Btw, I ran the test and mine is stuck at 108 so ordering a new sensor myself.

    "Lowside fuel pressure sensor almost claimed another victim for the second time....

    Customer had reached out to us to see if we had an engine to get him back up and running quick. We just so happen to have a fresh drop-out from a customers Ecoboost Mustang. Did a headgasket/studs and Precision Drop-In Turbo upgrade and shipped it out to him.

    He got it all in and I gave him things to look out for to see if the low pressure sensor that I posted about the other day might have been the cause of failure previously.

    Sure enough, he got everything back together and did a test log and the fuel pressure plummeted and the car went dead lean.

    If I didn't catch this the other day and gathered the signs he might have been dealing with yet another engine failure.

    Here is a link I found where Ford did a recall because they were "leaking". Not sure if they actually were leaking but by design it would almost be impossible for it to leak unless the o-ring wasn't in the threaded portion which I can't really see happening.

    https://static.nhtsa.gov/odi/rcl/2014/RCONL-14V774-8785.pdf

    Looks like the Ford recalled requested dealers to install a new fuel line part number# FR3Z-9J280-A

    However it looks like this line was superseded by a new part number but I'll have to get that tomorrow.

    Here are the symptoms to look out for. I figured I would post it again so we can try and cut down the amount of emails we are getting.

    Check engine lights related to lowside fuel pressure sensor:

    - P0148
    - P018C
    - P018D

    If you are having stumbling issues while getting into boost or the car is feeling "boggy" you might want to check the following things:

    - Add "Lowside FP Actual" to your Cobb Gauges. If it doesn't read at all (0-10psi), is stuck on a number and doesn't fluctuate, or reading in the 100+ range during idle and cruising. YOUR SENSOR IS BAD.
    - If it seems to read correctly (70-80psi) then set a gauge to HPFP Command and slightly get into boost. If it pegs 100% in low boost situations. YOUR SENSOR IS BAD.
    - Add "FRP Actual" and "FRP Desired" To your gauges and slightly get into boost. If your desired goes into the 2000psi+ range and your actual drops to 100-300psi. YOUR SENSOR IS BAD.

    These are the FOR SURE ways to test to see if your sensor is bad. Originally it looked like if it read 100psi+ on lowside pressure actual it was bad but I have came across instances where lowside was reading normal but the sensor was still faulty. It is best to do ALL THREE test to confirm your sensor is good, and to look elsewhere if you are having issues. EVEN IF YOU AREN'T HAVING ISSUES IT IS GOOD TO CHECK!

    If you can get the sensor off without stripping it you can replace it with part number BU5Z-9F972-B. If you cannot get the sensor out without stripping it you will need the complete line part number FR3Z-9J280-A.
     
    DRU842, twoehr, fsvec and 6 others like this.
  2. MakStang

    MakStang Well-Known Member

    First Name:
    Makis
    Vehicle(s):
    A 2017 miraculous little beast
    Joined:
    Dec 11, 2016
    Location:
    Greece
    Posts:
    1,478
    Likes Received:
    196
    0   0   0
    Good info, I follow this on FB as well. Good idea to post here.
     
  3. OP
    OP
    Blyman93

    Blyman93 Well-Known Member

    Vehicle(s):
    2016 Ecoboost Mustang (Black)
    Joined:
    Jun 20, 2016
    Location:
    Vancouver, WA
    Posts:
    335
    Likes Received:
    47
    0   0   0
    Fb are my friends, M6G is family. Lots of greats on here that should know this. Hopefully this cuts down on ecoboom.

    Plus side, my older post of a misfire issue I think is caused because my readings are high and high fuel events. Idle my sensor read 108psi. I'm hoping it's a 2 for 1 for this guy
     
  4. trippleyelo

    trippleyelo Well-Known Member

    Vehicle(s):
    ford f250 turbo diesel and 2016 mustang svo
    Joined:
    Sep 16, 2017
    Location:
    vancouver wa
    Posts:
    504
    Likes Received:
    75
    0   0   0
    Thank you sir

    This is the type of substance this forum needs ,and appreciate your stewardship on this for the better of the brotherhood and sisterhood on this forum:headbang:
     
  5. Cobra Jet

    Cobra Jet Well-Known Member

    Vehicle(s):
    2018 Fastback Premium EB/PP and 94 Mustang Cobra
    Joined:
    Feb 12, 2015
    Location:
    NJ
    Posts:
    2,713
    Likes Received:
    722
    Rating:
    100%
    2   0   0
    The attached recall letter is dated December 2014 and specifically states only “2015 Mustang”.

    Before the forum goes into a panick frenzy, is there any conclusive or factual proof this problem exists beyond 2015 for any 2016+ EB Mustangs?? My thought is, if there were still issues with the noted sensors, Ford would have extended the recall through 20xx year.

    Seems like this is another note for early 2015 or MY 2015 owner’s only.
     
    kart3l likes this.
  6. ZenkaiRacer

    ZenkaiRacer Well-Known Member

    Vehicle(s):
    2016 EB AT
    Joined:
    Apr 2, 2016
    Location:
    Utah
    Posts:
    115
    Likes Received:
    19
    0   0   0
    Adam has posted logs from multiple years of cars. Other tuners have verified this problem as well. Stock or tuned, it’s happened.

    For whatever reason the safeguards that are supposed to take place aren’t most of the time and 20:1 afr = boom.

    The sensor is easily accessible and is only around 25 bucks. I’m replacing mine.
     
  7. OP
    OP
    Blyman93

    Blyman93 Well-Known Member

    Vehicle(s):
    2016 Ecoboost Mustang (Black)
    Joined:
    Jun 20, 2016
    Location:
    Vancouver, WA
    Posts:
    335
    Likes Received:
    47
    0   0   0
    I just did a catalog of idle and light boost and my sensor was stuck half the time. That 70-80 psi running range is where it should be and mine was stuck at 108. I've been having weird fueling issues also which could be associated. I wouldn't post to cause the ridiculous frenzy, but rather if it could help anyone out.
     
  8. Brian V

    Brian V USA Retired

    Vehicle(s):
    2015ecoboost premium 201A Nav Sec Race Red
    Joined:
    Apr 27, 2015
    Location:
    Native Earthling
    Posts:
    927
    Likes Received:
    144
    0   0   0
    This is the kind of information this forum needs from the members and I for 1 appreciate all of your work putting this information out to us .

    Well done sir ....
     
  9. OP
    OP
    Blyman93

    Blyman93 Well-Known Member

    Vehicle(s):
    2016 Ecoboost Mustang (Black)
    Joined:
    Jun 20, 2016
    Location:
    Vancouver, WA
    Posts:
    335
    Likes Received:
    47
    0   0   0
    Anytime.
     
  10. 5.0yote

    5.0yote AKA Bananana & 3.7Cyclone

    First Name:
    Don
    Vehicle(s):
    2016 Mustang Ecoboost Premium
    Joined:
    Jul 18, 2015
    Location:
    Mansfield, MA
    Posts:
    521
    Likes Received:
    98
    Garage Profiles:
    1
    Rating:
    100%
    2   0   0
    Is this related to 2015 only? The NHTSA letter shows 2015...
     
  11. BoosTang23T

    BoosTang23T Well-Known Member

    Vehicle(s):
    2016 Ford Mustang EcoBoost
    Joined:
    Mar 28, 2017
    Location:
    Florida
    Posts:
    328
    Likes Received:
    118
    0   0   0
    I had a bad fuel sensor issue a while ago which Ford did not want to cover due to out of warranty... I ended up paying $500 to get this replaced. The parts replaced were the Fuel Injector Pressure sensor and Fuel Vapour hose. I will see if I can find my work order for the part numbers. Could be related to this issue.
     
  12. Bull Run

    Bull Run Well-Known Member

    Vehicle(s):
    2015 Mustang EB Prem PP
    Joined:
    Feb 24, 2017
    Location:
    AZ
    Posts:
    537
    Likes Received:
    263
    0   0   0
    My readings seemed normal, but I went ahead and swapped the sensor out since you can get one for around $20 shipped on eBay. I have a picture of both old and new sensors on my build page, so you can check to see if you have the old or revised one.
     
  13. MakStang

    MakStang Well-Known Member

    First Name:
    Makis
    Vehicle(s):
    A 2017 miraculous little beast
    Joined:
    Dec 11, 2016
    Location:
    Greece
    Posts:
    1,478
    Likes Received:
    196
    0   0   0
    I saw the picture in your thread [MENTION=29066]Bull Run[/MENTION] and I will check my low-side fuel pressure sensor on my 2017 EB just in case I don't have the upgraded one. Did you guys buy the revised sensor (BU5Z-9F972-B) on eBay or at the dealership? Can you post a link?
     
  14. ZenkaiRacer

    ZenkaiRacer Well-Known Member

    Vehicle(s):
    2016 EB AT
    Joined:
    Apr 2, 2016
    Location:
    Utah
    Posts:
    115
    Likes Received:
    19
    0   0   0
    That recall posted was for leaking, not the issue at hand. It was the only related thing he could find as far as recalls go. So no, there is no recall for this specific issue. Just a new part numbered sensor that is believed to solve the problem. Hopefully as time goes on the same thing doesn’t happen with the newer sensors.
     
  15. OP
    OP
    Blyman93

    Blyman93 Well-Known Member

    Vehicle(s):
    2016 Ecoboost Mustang (Black)
    Joined:
    Jun 20, 2016
    Location:
    Vancouver, WA
    Posts:
    335
    Likes Received:
    47
    0   0   0
    I have a 2016. My sensor is definitely acting up. Grabbi g one today at the dealership. Recall or not, it's just good to catch early. With all the sudden lean AFR to boom posts, I think regularly monitoring FRP could be just as useful as AFR and OAR. Just my .02
     
  16. Bull Run

    Bull Run Well-Known Member

    Vehicle(s):
    2015 Mustang EB Prem PP
    Joined:
    Feb 24, 2017
    Location:
    AZ
    Posts:
    537
    Likes Received:
    263
    0   0   0
    MakStang likes this.
  17. ZenkaiRacer

    ZenkaiRacer Well-Known Member

    Vehicle(s):
    2016 EB AT
    Joined:
    Apr 2, 2016
    Location:
    Utah
    Posts:
    115
    Likes Received:
    19
    0   0   0
    I posted that for people that may believe they are not affected due to that recall being for 2015. I most certainly believe this is a problem not limited to a single model year.

    I also agree about the monitoring, I just would rather not have an access port or logger mounted at all times.
     
  18. Ecoboobs

    Ecoboobs RAINF

    Vehicle(s):
    2017 PP (Poverty Pack) 2.3T A/T
    Joined:
    Aug 12, 2017
    Location:
    Oz
    Posts:
    50
    Likes Received:
    6
    0   0   0
    Well here's aa 4 sec idle log from mine. According to this my 2017 is bad. However I am tuned. I need to find out if my tuner has raised this pressure on purpose. Haven't done the other tests just looking through a recent log.

    Lowside FP Actual (psi) 102.3 108.8 108.4 108.3 101.2 107.3 101.4 102 109 105.3 108.6 108.9 99.9 108.6 104.6 98.7 108.3 108.3 99.6 107.3 107 98.4 107.7 100.6 98 108.6 108.9 98.4 107.6 109 99.1 104.4 108.8 99.6 97.9 107.8 108.8 107.7 101.7 105.6 106.9 104.1 103.6 108.8
     
  19. Brian V

    Brian V USA Retired

    Vehicle(s):
    2015ecoboost premium 201A Nav Sec Race Red
    Joined:
    Apr 27, 2015
    Location:
    Native Earthling
    Posts:
    927
    Likes Received:
    144
    0   0   0
    [MENTION=31565]Ecoboobs[/MENTION]

    Those # s look as though there is a pressure drop intermittently and normal considering the fuel injectors are functioning properly .. Try some RedLine Fuel additive to clean them up some and retest ..

    Personally I take anything reported by Adam Brunson with a grain of salt and sand and anything 1 could toss behind them with out paying for a treat ....
    If and when others report faults I will consider this information Valid ........
     
    Cobra Jet likes this.
  20. Ecoboobs

    Ecoboobs RAINF

    Vehicle(s):
    2017 PP (Poverty Pack) 2.3T A/T
    Joined:
    Aug 12, 2017
    Location:
    Oz
    Posts:
    50
    Likes Received:
    6
    0   0   0
    #20 Ecoboobs, Mar 20, 2018
    Last edited: Mar 20, 2018
    OK I just did some real time testing and logging. My Lowside FP Actual is doing exactly what the Lowside FP Desired is asking it to do. At idle my tune is commanding a 104 PSI value (Lowside FP Desired). Basically it is doing what it is told to do.

    Same with the FRP actual and FRP desired. The FRP actual is also meeting the desired targets in all regimes.

    With regard to the HPFP command mine is getting to 100% under full load at max torque but only very momentarily.

    With a cold engine not running my Lowside FP actual value is 84 PSI.
    [MENTION=15413]Brian V[/MENTION], I ran some Liqui Moly petrol injector cleaner through my engine two tanks ago.

    No one panic...:cheers:
     
Loading...

Share This Page