Ecoboost Performance Forum

Ecoboost Performance => Troubleshooting, Maintenance, TSB Articles => Troubleshooting => Topic started by: TopherSho on October 18, 2017, 09:10:12 PM

Title: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 18, 2017, 09:10:12 PM
Have not been able to log it yet.. but 1:10 wot runs from first gear through second result in a small single backfire. Then shift.  It occurs RIGHT BEFORE the shift and NOT during the shift.  It feels like a rpm overrun.. but it is not in my observation overreving ..

Thoughts (yes emailed Brad)
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: ZSHO on October 19, 2017, 09:43:10 AM
I would check your spark plugs or COP or your CAC (intercooler) to make sure its not pooled with crud.
Did you happen to check for Codes?  Z
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 19, 2017, 08:40:23 PM
Quote from: ZSHO on October 19, 2017, 09:43:10 AM
I would check your spark plugs or COP or your CAC (intercooler) to make sure its not pooled with crud.
Did you happen to check for Codes?  Z

Na no code checking.  But I will now that you mention it.   
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: StealBlueSho on October 19, 2017, 09:28:39 PM
Not common on this platform at all... I have not run across it on the forums...

Usually a timing issue... but could be a fouled plug or COP... check a log for misfires, pull the plugs (all of them) and check for issues.

Z has a good idea with the CAC... but as much as your on it, I'm sure the CAC has been cleared out by now lol.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 20, 2017, 12:45:38 PM
Quote from: StealBlueSho on October 19, 2017, 09:28:39 PM
Not common on this platform at all... I have not run across it on the forums...

Usually a timing issue... but could be a fouled plug or COP... check a log for misfires, pull the plugs (all of them) and check for issues.

Z has a good idea with the CAC... but as much as your on it, I'm sure the CAC has been cleared out by now lol.

I think it is a timing issue as well, interestingly i have been hard on it all week data logging and have not had it happen.  But when it did happen it was with the wife in the car + groceries .. so it might be load + high rpm + timing related. 

No codes were found .. but it has been at least 10 power cycles since the last !bang!
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: SHOdded on October 20, 2017, 05:52:32 PM
Plugs, maybe?  I dont think its the knock sensor wires, but ...
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: lamrith on October 20, 2017, 06:17:19 PM
Is this happening on meth with meth tune, last I recall you were running meth full time?  If it is happening when you are spraying I would disable the meth system and run a non-meth tune and see if it still happens.

If it goes away completely then time to look at meth system for issues.  Could be tune related, but highly doubtful knowing Brad and the fact that tune ran fine for quite a while.

Did it all happen on a single tank of fuel?  or on sequential tanks both filled from a single station in a short amount of time?  Maybe bad fuel?
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: ZSHO on October 20, 2017, 06:43:40 PM
It could be that concocted pale of Methanol you purchased IIRC.  Z
I would verify its the real-deal IMO.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: FoMoCoSHO on October 20, 2017, 08:15:29 PM
Is it showing the misfire in your logs?
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 21, 2017, 02:01:53 PM
Well to answer several Q's. The meth is pure VP in thier can.  No mixxing at all.

No codes so far

Boost looked ok. 

Have not pulled the plugs.. but they are less than 10k old

Meth rev3 did not do it.. but it was WARMER then

I think this is cold weather + load in weight + high rpm... But just need to catch it in the act to know more..
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: FoMoCoSHO on October 21, 2017, 02:29:09 PM
Did you see an actual misfire in your log?

An unhappy shift setting can cause all kinds of mayhem.

I guess a better question is are you feeling it or hearing a big boom?

If so could it be you are missing an intermittent shift and ecm starts shutting down cylinders but your meth doesn't know?

Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 21, 2017, 06:41:22 PM
It feels the same as when I derp it and forget to shift in manual mode :).  You can hear it a d feel a tiny thump bang. 
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: SHOdded on October 21, 2017, 09:21:49 PM
Sometimes a TSS/OSS sensor or a solenoid body or even a trans range sensor issue can be responsible.  You can easily track with the X4.  When was trans fluid last changed btw?
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 21, 2017, 10:25:55 PM
Quote from: SHOdded on October 21, 2017, 09:21:49 PM
Sometimes a TSS/OSS sensor or a solenoid body or even a trans range sensor issue can be responsible.  You can easily track with the X4.  When was trans fluid last changed btw?

sadly never.  no-one in town wants to touch it.. i have 3 years on a platinum warranty so i am prepped for a full on replacement eventfully.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: SHOdded on October 21, 2017, 10:48:12 PM
Trans fluid xchange should be easy peasy.  The PTU/RDU, yes, major pushback is the norm.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: FoMoCoSHO on October 22, 2017, 02:54:46 PM
Quote from: TopherSho on October 21, 2017, 10:25:55 PM
Quote from: SHOdded on October 21, 2017, 09:21:49 PM
Sometimes a TSS/OSS sensor or a solenoid body or even a trans range sensor issue can be responsible.  You can easily track with the X4.  When was trans fluid last changed btw?

sadly never.  no-one in town wants to touch it.. i have 3 years on a platinum warranty so i am prepped for a full on replacement eventfully.
Wait, you can't find anyone to do a simple drain and fill?
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 22, 2017, 05:48:27 PM
I have decided to turn off the meth for now.  It is too cold and I am wondering if the issue is the meth not vaporizing..  at 375ml maybe I am getting wet in the cylinder but not enough to misfire.  Weather in Oregon is moist as hell and cold so I am betting the meth is wasted a bunch as is .. bummed out.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: SHOdded on October 22, 2017, 05:57:14 PM
Hopefully as simple as that, simple is GOOD!
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 22, 2017, 07:32:46 PM
Quote from: SHOdded on October 22, 2017, 05:57:14 PM
Hopefully as simple as that, simple is GOOD!

I also think this kit is not what I needed. Push clamps, lines that deteriorate... Big mistake.

Title: Re: Occasionally backfiring? Anyone else have this?
Post by: StealBlueSho on October 22, 2017, 07:53:16 PM
Quote from: TopherSho on October 22, 2017, 07:32:46 PM
Quote from: SHOdded on October 22, 2017, 05:57:14 PM
Hopefully as simple as that, simple is GOOD!

I also think this kit is not what I needed. Push clamps, lines that deteriorate... Big mistake.

Call this place...  I heard they make top notch kits...

https://www.alkycontrol.com/ (https://www.alkycontrol.com/)
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 23, 2017, 09:20:10 AM
OFFS ... starting new thread.  Reverting to a non-meth tune does *not* solve the power fluctuations. Same issue...

Damn Internets and reasonable people being right ...  :blowup:

need to get a good log first but the hiccups continue in when not on meth and on a non-meth tune.   I need to let a tank of gas go through 1st to make sure.



Title: Re: Occasionally backfiring? Anyone else have this?
Post by: StealBlueSho on October 23, 2017, 09:24:59 AM
Check your plugs.... you could very well have a bad plug...
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: ZSHO on October 23, 2017, 10:27:48 AM
I think you might as well install new (COP) while checking your plugs for good measures,especially if original. Z

$3.91 EA
http://www.rockauto.com/en/moreinfo.php?pk=3422364&cc=1445050&jsn=431 (http://www.rockauto.com/en/moreinfo.php?pk=3422364&cc=1445050&jsn=431)

http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,ignition,spark+plug+/+coil-on-plug+boot,10150 (http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,ignition,spark+plug+/+coil-on-plug+boot,10150)
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: StealBlueSho on October 23, 2017, 10:30:41 AM
Quote from: ZSHO on October 23, 2017, 10:27:48 AM
I think you might as well install new (COP) while checking your plugs for good measures.  Z

$3.91 EA
http://www.rockauto.com/en/moreinfo.php?pk=3422364&cc=1445050&jsn=431 (http://www.rockauto.com/en/moreinfo.php?pk=3422364&cc=1445050&jsn=431)

http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,ignition,spark+plug+/+coil-on-plug+boot,10150 (http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,ignition,spark+plug+/+coil-on-plug+boot,10150)


If you have never changed out your plugs then these are a must! Usually the local Ford parts places have these available.. they were $2.95 a piece at my local dealership... they usually have them available.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 23, 2017, 12:51:46 PM
Thanks guys.. It is on the list now. 

New boots
New COP
New plugs... IF they look burnt or white or the electrode is damaged.  I did the plugs previously when I had the non-meth tune.   what a pain in the ass they were too.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 23, 2017, 01:20:08 PM
Quote from: StealBlueSho on October 23, 2017, 10:30:41 AM
Quote from: ZSHO on October 23, 2017, 10:27:48 AM
I think you might as well install new (COP) while checking your plugs for good measures.  Z

$3.91 EA
http://www.rockauto.com/en/moreinfo.php?pk=3422364&cc=1445050&jsn=431 (http://www.rockauto.com/en/moreinfo.php?pk=3422364&cc=1445050&jsn=431)

http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,ignition,spark+plug+/+coil-on-plug+boot,10150 (http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,ignition,spark+plug+/+coil-on-plug+boot,10150)


If you have never changed out your plugs then these are a must! Usually the local Ford parts places have these available.. they were $2.95 a piece at my local dealership... they usually have them available.

hmmm I do not remember the FLAT insulator when i took mine apart.. is it a later year thing ??


ACDELCO or DENSO guyz ?  thx in advance!

http://www.rockauto.com/en/moreinfo.php?pk=3867477&cc=1445050 (http://www.rockauto.com/en/moreinfo.php?pk=3867477&cc=1445050)
http://www.rockauto.com/en/moreinfo.php?pk=4000134&cc=1445050&jsn=12 (http://www.rockauto.com/en/moreinfo.php?pk=4000134&cc=1445050&jsn=12)
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: StealBlueSho on October 23, 2017, 03:35:34 PM
That flat gasket slides over the post on the COP and goes to the top of it. Most likely you will not need it. Don't forget some dielectric grease and anti-seize..
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: ZSHO on October 23, 2017, 04:31:31 PM
X2 with SBS ^^ and only the Coil on (boot) needs to be replaced preferably with the the Motorcraft/NGK brand.- X6 Boots needed @ $3.91 ea.

http://www.rockauto.com/en/moreinfo.php?pk=3422364&cc=1445050&jsn=431 (http://www.rockauto.com/en/moreinfo.php?pk=3422364&cc=1445050&jsn=431)

http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,ignition,ignition+coil,7060. (http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,ignition,ignition+coil,7060.)

Simply remove the ignition coil.
Gently remove the bottom portion of the boot by gently pulling/twisting it outwards while taking the necessary precautions in not damaging the spring inside the boot.  Z

(Pics below for reference)
(https://i.imgur.com/wNJEVj0h.jpg?1)(https://i.imgur.com/UyKBzRlh.jpg)
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 23, 2017, 11:22:48 PM
Quote from: ZSHO on October 23, 2017, 04:31:31 PM
X2 with SBS ^^ and only the Coil on (boot) needs to be replaced preferably with the the Motorcraft/NGK brand.- X6 Boots needed @ $3.91 ea.

http://www.rockauto.com/en/moreinfo.php?pk=3422364&cc=1445050&jsn=431 (http://www.rockauto.com/en/moreinfo.php?pk=3422364&cc=1445050&jsn=431)

http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,ignition,ignition+coil,7060. (http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,ignition,ignition+coil,7060.)

Simply remove the ignition coil.
Gently remove the bottom portion of the boot by gently pulling/twisting it outwards while taking the necessary precautions in not damaging the spring inside the boot.  Z

(Pics below for reference)
(https://i.imgur.com/wNJEVj0h.jpg?1)(https://i.imgur.com/UyKBzRlh.jpg)

Doesn't the replacement unit come with a spring?
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 23, 2017, 11:30:08 PM
Should i get 3 replacement plugs just in case ???  ... I'd hate to take the time to get the boots put (#$%^ing pain the ass last time) and then have to do it 2x because of bad plugs ..

but i cant see needing 6x plugs ..  would 3 plugs be a safe bet ?

Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 23, 2017, 11:48:31 PM
Going with 3xNGK 6150's (same as before) and 6xMOTORCRAFT WR6135 .. crossing my fingers.  Hope this is not a actual coil issue or weak o2/wideband thingy ..

I do not want to deal with the dealership with no codes ...
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 24, 2017, 04:22:08 PM
Ok i logged it.  and i am bummed as s*** .. no misfires.  it backfired at 5000+ rpm several times.

log attached.  but it doesn't give me any hints.  Anyone else see anything I am not ?
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: StealBlueSho on October 24, 2017, 04:41:18 PM
If it was me... I would buy six... what I don't use I can put away for when it's time to replace them.. at $6 a plug it's cheap insurance..
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: ZSHO on October 24, 2017, 05:20:09 PM
True indeed!  certainly don't want a half a** job done. Lol.  Z
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 24, 2017, 05:21:38 PM
Will a meth wash hurt the plugs !?   should I be replacing them every 10k?  (that's how long I have had mine ..)

one last hail mary.  I will check the CAC..   it has never been a problem before... BUT it has been run HARD and above stock boost levels so it *could* be getting more than normal oil and goo in the bottom and eating it on high rpm runs. 

I will see about 'sticking' it today or tomorrow...

to be clear normal driving is perfect and strong.  it is under high load and high rpm the issue crops up.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: ZSHO on October 24, 2017, 05:38:10 PM
The extra stress alone from the drivetrain on a Tuned vehicle should be changed more often preferably @ 12K intervals .IMO. for added reassurance purposes.  Z
So to better answer your question "Yes"
@ the end Fresh plugs,fluids=better performance.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 24, 2017, 05:41:07 PM
God i hated doing plugs on this car .. 6 plugs it is. 
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: StealBlueSho on October 24, 2017, 08:59:12 PM
Oh it's not that bad. Good luck though!
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 25, 2017, 03:09:57 PM
Where and what does the boost solenoid look like ?

From Brad ""Chris go check your vacuum hoses around the boost solenoid, specifically the one that leaves the solenoid and goes to the intake pipe  or charge pipe. It looks like you are overboosting.""

is this some thing similar ?

thankx in advance..
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: SHOdded on October 25, 2017, 03:20:23 PM
I assume this is what is being talked about
(https://www.ecoboostperformanceforum.com/index.php?action=dlattach;topic=8458.0;attach=16022;image)
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 25, 2017, 03:30:13 PM
Quote from: SHOdded on October 25, 2017, 03:20:23 PM
I assume this is what is being talked about
(https://www.ecoboostperformanceforum.com/index.php?action=dlattach;topic=8458.0;attach=16022;image)

Thanks SHOdded,  i thought that might be it but wasn't sure. 

NEXT mystery ::
http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,exhaust+&+emission,oxygen+(o2)+sensor,5132 (http://www.rockauto.com/en/catalog/ford,2010,taurus,3.5l+v6+turbocharged,1445050,exhaust+&+emission,oxygen+(o2)+sensor,5132)

Brad says my primary O2's are sketchy ... but on the RA link above the closest thing i find to primary is ''upstream''.   any ideas?  since this is a race rig and DD i will pop for bigger cost/better quality pieces but i do not know which parts i need.. and to be honest if i should just replace all of them since i will be under there.

So far we are
6 new plugs to replace the 10k old NGK 6150's
6 new boots for the COP
2 new O2's for maybe 4 for good measure
..

thank you all in advance.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: SHOdded on October 25, 2017, 03:43:01 PM
Primary = upstream
Secondary = downstream

When in doubt, go oem.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 25, 2017, 03:48:15 PM
Quote from: SHOdded on October 25, 2017, 03:43:01 PM
Primary = upstream
Secondary = downstream

When in doubt, go oem.

Thank you sir!

well all-righty then ..  I wonder if i should just buy them from the dealership. i will have to call a price qoute them.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: ZSHO on October 25, 2017, 04:23:09 PM
I just opened one up for ya.!!  Nice made in Germany  Z  :)
SOLENOID VALVE - FORD  (BL3Z-9K378-A)
  $16.17
(https://i.imgur.com/PSSOrQKh.jpg)

https://parts.levittownfordparts.com/oem-parts/ford-solenoid-valve-bl3z9k378a/?c=Zz1mdWVsLXN5c3RlbSZzPXR1cmJvLWNoYXJnZXImaT1LRjEzMzI1NSZyPWxheWVyXzIxJmE9Zm9yZCZvPXRhdXJ1cyZ5PTIwMTAmdD1zaG8mZT0zLTVsLXY2LWdhcw%3D%3D
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: SHOdded on October 25, 2017, 04:56:42 PM
Call up one of the online dealers for all the parts you need, discounted.  Levittown Ford, Tasca, and AutoNation of White Bear Lake are tops in the trade.
Title: Re: Occasionally backfiring? Anyone else have this?
Post by: TopherSho on October 25, 2017, 05:08:36 PM
Quote from: ZSHO on October 25, 2017, 04:23:09 PM
I just opened one up for ya.!!  Nice made in Germany  Z  :)
SOLENOID VALVE - FORD  (BL3Z-9K378-A)
  $16.17
(https://i.imgur.com/PSSOrQKh.jpg)

https://parts.levittownfordparts.com/oem-parts/ford-solenoid-valve-bl3z9k378a/?c=Zz1mdWVsLXN5c3RlbSZzPXR1cmJvLWNoYXJnZXImaT1LRjEzMzI1NSZyPWxheWVyXzIxJmE9Zm9yZCZvPXRhdXJ1cyZ5PTIwMTAmdD1zaG8mZT0zLTVsLXY2LWdhcw%3D%3D

Thanks Z,  but i am 99% sure mines fine.  :)
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