Ecoboost Performance Forum

Ecoboost Performance => Troubleshooting, Maintenance, TSB Articles => Troubleshooting => Topic started by: ddlopes on February 16, 2020, 03:42:54 PM

Title: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 16, 2020, 03:42:54 PM
Took the car out last nite and noticed the engine light started flashing after getting into the throttle.  The flashing light then went out on it's own while I was driving. When I got home I pulled codes P0300 (multi cylinder misfires), P0302 (cylinder 2 misfire) and P0306 (cylinder 6 misfire). Anyone ever run into this? Sparks and MSD coils have about 600 miles on them. I'm gonna pull the plugs in bank 2 and 6. Also gonna check for vacuum leaks. Thanks for looking.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: TopherSho on February 16, 2020, 04:20:03 PM
Swap the plugs and coils around,. Move them in pairs and see if it moved the codes to the new cylinders.

If it does not stop driving and get her in for injector diagnosis
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 16, 2020, 05:45:04 PM
Exactly what I plan on doing. Just took it out for a quick run and as soon as I attempted to go wot it stumbled and started sputtering... when I drive normal there's no issues. And the idle is good. I'm gonna pull the plugs tonight
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 16, 2020, 06:52:14 PM
Well plugs are junk... I'm pretty sure...
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: SHOdded on February 16, 2020, 07:06:48 PM
Whoa!  Running leaded fuel or fuel with MTBE in it?
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 16, 2020, 07:13:12 PM
Nope. I run 93 octane with (1) can of Boostane Professional. But just recently switched over to 93 octane and VP racing fuel X85 (E85) for a E30 fuel tune. I've been running the E30 tune for the last 100 miles or so.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 16, 2020, 07:27:04 PM
Looks like the orange color is normal when running Boostane. From what I've seen so far on the internet. I'll need to check more into this issue.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: SHOdded on February 16, 2020, 08:40:47 PM
Hmm will check it out also.  They may claim no mtbe but ...

I remember  bamsho reporting plugs being fouled by an octane booster, dont recall which one tho.

Best off with race fuel or bnd automotive  additives.

========

MMT is what I was thinking of for that special orange glow.  Boostane's formula is "proprietary" so only independent testing will show what it contains.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: TopherSho on February 17, 2020, 02:20:03 AM
WOW! .. That's uh quite the color.. yeah whatever additive was used it is not burning clean.

Good news .. not injectors!
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: bamsho on February 17, 2020, 06:16:54 AM
Used Octanium from VP racing.  Plugs had a red/ orangish color but never that bad.   I would look at the Upstream 02 sensors, I bet they look that bad too.  They may need replaced too.  I stopped using Octanium, just use Sunoco 260GTX its 98 octane non ethanol fuel.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 17, 2020, 04:07:07 PM
Weird thing is if never seen this happen before to my plugs. I've been running Boostane for over a year. Last time I replaced the plugs they didn't have this strong orange color. These plugs look bad but on other forums they said the orange coating in normal. But I'll see what happens once I install new plugs. Hopefully it resolves my misfires!!!
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: SHOdded on February 17, 2020, 04:21:10 PM
 :alkashi: :alkashi:
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 17, 2020, 04:23:22 PM
Just ordered new plugs from Rockauto. Looks like the sp542 spark plugs have been replaced by the sp578. Anyone know if the gap of .28 has changed also?
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: TopherSho on February 17, 2020, 09:53:24 PM
I'm unsure but it appears the 578's are not the same heat range .. :( 

https://www.f150ecoboost.net/threads/sp578-plugs.77884/page-2 (https://www.f150ecoboost.net/threads/sp578-plugs.77884/page-2)

But this is to be taken with a grain of internet 'sayz-so' testimony

Z comments?
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: TopherSho on February 17, 2020, 10:09:15 PM
https://www.cjponyparts.com/ford-performance-cold-spark-plug-set-3-5l-f-150-2010-2017/p/M1240535T/ (https://www.cjponyparts.com/ford-performance-cold-spark-plug-set-3-5l-f-150-2010-2017/p/M1240535T/)

These are dead ringers for the 542's .. slightly more expensive.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ZSHO on February 18, 2020, 07:45:28 AM
X2 ^^^ FORD PERFORMANCE 3.5L ECOBOOST COLD SPARK PLUG SET
PART NUMBER: M-12405-35T.  Z
$40.23 - X 6 plugs

https://www.levittownfordparts.com/sku/m-12405-35t.html (https://www.levittownfordparts.com/sku/m-12405-35t.html)
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: SM105K on February 18, 2020, 10:37:44 AM
Quote from: ZSHO on February 18, 2020, 07:45:28 AM
X2 ^^^ FORD PERFORMANCE 3.5L ECOBOOST COLD SPARK PLUG SET
PART NUMBER: M-12405-35T.  Z
$40.23 - X 6 plugs

https://www.levittownfordparts.com/sku/m-12405-35t.html (https://www.levittownfordparts.com/sku/m-12405-35t.html)

I just bought a set.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: TopherSho on February 18, 2020, 03:01:40 PM
^^  17$ S&H ?  wth ...
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: SM105K on February 19, 2020, 08:30:38 AM
Quote from: TopherSho on February 18, 2020, 03:01:40 PM
^^  17$ S&H ?  wth ...

Yep....they will get you one way or another.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 20, 2020, 07:53:55 AM
Looks like the SP578's that are replacing the SP542's aren't the same heat range. LMAO... I can't win... I'll be ordering the Ford Performance plugs today. Hopefully I can pick up a set today at Tasca Ford. If not I'll order online. Thanks for the heads up guys!!!
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 22, 2020, 07:50:07 PM
Just a heads up. Installed new Ford Performance plugs and the car is back to normal with no more misfires. Thanks for all the help!!
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ZSHO on February 22, 2020, 08:12:40 PM
Great news is always welcomed. Z  :thumb:
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 23, 2020, 12:11:39 PM
Well I took the car out this morning for work and again I had the engine light flashing then go off while driving. This happen after I went WOT on the highway. Seemed to have a very small hesitation then pulled good. I'm not seeing any knock at all. I'm starting to think it may be a fuel injector. Or possibly the octane booster may have damaged an O2 sensor. I'll check the codes when I get home to see what comes up. Thanks for looking...
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: TopherSho on February 23, 2020, 01:45:11 PM
Quote from: ddlopes on February 23, 2020, 12:11:39 PM
Well I took the car out this morning for work and again I had the engine light flashing then go off while driving. This happen after I went WOT on the highway. Seemed to have a very small hesitation then pulled good. I'm not seeing any knock at all. I'm starting to think it may be a fuel injector. Or possibly the octane booster may have damaged an O2 sensor. I'll check the codes when I get home to see what comes up. Thanks for looking...

Do you have a non-meth tun to run on your hardware?  if so drop down to that and put it in manual shift mode and do a 3rd gear sweep from 2500-6000 rpm and check the STFT .. it should be obvious at that point.  Gluck
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 23, 2020, 02:21:20 PM
Quote from: TopherSho on February 23, 2020, 01:45:11 PM
Quote from: ddlopes on February 23, 2020, 12:11:39 PM
Well I took the car out this morning for work and again I had the engine light flashing then go off while driving. This happen after I went WOT on the highway. Seemed to have a very small hesitation then pulled good. I'm not seeing any knock at all. I'm starting to think it may be a fuel injector. Or possibly the octane booster may have damaged an O2 sensor. I'll check the codes when I get home to see what comes up. Thanks for looking...

Do you have a non-meth tun to run on your hardware?  if so drop down to that and put it in manual shift mode and do a 3rd gear sweep from 2500-6000 rpm and check the STFT .. it should be obvious at that point.  Gluck


Thanks... I will definitely try that!!!
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 24, 2020, 08:42:29 AM
So I took the car out again last night to see if I could get a code to come up. Unfortunately no codes but I definitely have a hesitation and sputtering issue. This only happens when I attempt to go WOT. I'm thinking after having to replace the spark plugs due to the orange coating from the Boostane. Perhaps the O2 sensor/sensors also need to be replaced. I'll pull out the wideband sensor today and see how it looks. My question is can the O2 sensor go bad without a code showing up and can a bad O2 cause these types of issues. Thanks in advance for looking.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ZSHO on February 24, 2020, 08:58:06 AM
How many miles on your SHO! The sputtering sounds more like an (COP) ignition harness connector issue IMO!
I would double check the connectors to verify that there fully seated and the (red tab) snap into place.
I would also check Spark resistance with a multimeter to verify concern..

There are 2 Front wide-band 02 sensors which should be replaced in pairs and have the same part numbers.
I believe the Fault code needs to be set for at least 3 consecutive times before a code will be emmitted IIRC. Z
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 24, 2020, 09:56:30 AM
Quote from: ZSHO on February 24, 2020, 08:58:06 AM
How many miles on your SHO! The sputtering sounds more like an (COP) ignition harness connector issue IMO!
I would double check the connectors to verify that there fully seated and the (red tab) snap into place.
I would also check Spark resistance with a multimeter to verify concern..

There are 2 Front wide-band 02 sensors which should be replaced in pairs and have the same part numbers.
I believe the Fault code needs to be set for at least 3 consecutive times before a code will be emmitted IIRC. Z


Car has 29K but motor has approximately 800 miles on it. Engine was replaced by ford due to LSPI. I already triple checked the connectors for the coils.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: TopherSho on February 24, 2020, 10:06:24 AM
Quote from: ZSHO on February 24, 2020, 08:58:06 AM
I believe the Fault code needs to be set for at least 3 consecutive times before a code will be emmitted IIRC. Z


Soo sooooooo ##@#ing this ... ^^

I like Fords,  but I hate ford built in diagnostics.   I had a very bad Injector dumping fuel,  no codes... Had bad plugs,  no codes,  Had a bad wastegate that was stuck basicly closed no codes. 

Get it up on a rack and pull the O2's in front they will have the worst impact. 

Z... could this be a bad knock harness? Like we have seen with the rubbing issue?
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: TopherSho on February 24, 2020, 10:09:59 AM
if you did not replace your cats with the new block,  you can likely expect some reduced life from the goop :(   .. on the other high low flow cats yield good gains :)
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 24, 2020, 10:36:48 AM
Quote from: TopherSho on February 24, 2020, 10:09:59 AM
if you did not replace your cats with the new block,  you can likely expect some reduced life from the goop :(   .. on the other high low flow cats yield good gains :)

I'm running PPE catted downpipes. I did replace (1) of the cats after the engine had LSPI due to excessive oil damage. As for the knock sensor wires I've already corrected that issue. I'm hoping its not an injector issue but we'll see. 
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: TopherSho on February 24, 2020, 10:57:16 AM
Im betting on an erratic O2 reading ..
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 24, 2020, 11:24:22 AM
Quote from: TopherSho on February 24, 2020, 10:57:16 AM
Im betting on an erratic O2 reading ..

I hope so... I'm assuming just replace the wideband O2 sensor that looks the worse and see if that resolves it. If that doesn't resolve the issue I'll swap the other wideband out. 
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: SHOdded on February 24, 2020, 02:23:30 PM
yeah the widebands control a/f ratios.  the narrowbands are there for catalyst monitoring.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 24, 2020, 02:39:35 PM
Quote from: SHOdded on February 24, 2020, 02:23:30 PM
yeah the widebands control a/f ratios.  the narrowbands are there for catalyst monitoring.


If replacing the wideband O2 sensor resolves the issue is it a good idea to replace the narrow O2 sensors?
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: 6500rpm on February 24, 2020, 04:46:23 PM
Any clue what your long and short trim fuel  trims are showing? I find it really odd that only random  misfire dtc's are setting. I know that your  O2 sensors are suspect, but usually something dtc related point to them. Have you purged and refilled the fuel tank since the issue started? Usually with random multiple misfires you need to look at things common to all cylinders. Fuel trim can tell you if you're  looking at a rich or lean induced misfire.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 24, 2020, 05:39:34 PM
I haven't purged the tank or checked the fuel trims yet. I need to run the E30 blend that's in the tank out. Then I can refuel with just 93 octane and download a tune without meth. Then I can confirm what my fuel trims look like. I don't have a straight E30 tune without meth. Since I replaced the plugs I'm not getting any misfire codes. I'm hoping the new O2 sensors will cure the hesitation and sputtering. We'll see...
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: SHOdded on February 24, 2020, 07:18:38 PM
Always a good idea to replace all 4 at the same time if the fronts are having issues.  I think they are halfprice of the fronts too IIRC.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ZSHO on February 24, 2020, 08:52:57 PM
Did you ever have the FPCM recall performed ? Z

https://drive.google.com/file/d/0B8JUL90DXgdiaWxocmdhUnEteTdQbmdTbDJzU3BKLXpFZzQw/view?usp=drivesdk
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 25, 2020, 06:01:58 AM
Quote from: ZSHO on February 24, 2020, 08:52:57 PM
Did you ever have the FPCM recall performed ? Z

https://drive.google.com/file/d/0B8JUL90DXgdiaWxocmdhUnEteTdQbmdTbDJzU3BKLXpFZzQw/view?usp=drivesdk

I'll have to check. I believe it was done prior to me purchasing the car in 2014
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 25, 2020, 03:42:58 PM
I have no open recalls for the fuel system. But the toe link recall should be in the mail soon.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: SHOdded on February 25, 2020, 06:12:24 PM
5+ years time to see how it is holding up.  Also, have you tried running without methanol yet?
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 26, 2020, 05:23:58 AM
Quote from: SHOdded on February 25, 2020, 06:12:24 PM
5+ years time to see how it is holding up.  Also, have you tried running without methanol yet?

I haven't run the car without the meth tune yet. The car isn't my DD more of toy. The O2 sensors will be here tomorrow. I'm pretty sure that is gonna resolve my issue. But I've definitely but wrong before so we'll see...Lol... once the O2 sensors are in I'm gonna use up the E30 in the tank. Then download a non meth tune and refill with 93 octane and see what a datalog shows. Hopefully everything is fixed. I'll report back.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 27, 2020, 12:33:37 PM
Here's the O2 wideband sensor from the front of the engine. You can clearly see the same orange coating as the spark plugs. Getting ready to swap out the other O2 wideband sensor now...
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 27, 2020, 01:18:34 PM
Here's the wideband from the back ... time to take it for a test drive...🤞🏾
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: SHOdded on February 27, 2020, 04:30:09 PM
wow really caked on!  hope that is the fix!
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 27, 2020, 08:25:12 PM
Ok looks like replacing both wideband O2 sensors fixed my issues. I'll be replacing the narrow bands next week just to be on the safe side. Also gonna run some fuel injector cleaner as well. Thank you everyone I really appreciate all the help. If there's anyone out there running Boostane you might wanna stop before you run into these issues.
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: SHOdded on February 27, 2020, 08:52:07 PM
Awesome!
Title: Re: Misfiring codes P0300, P0302 and P0306
Post by: ddlopes on February 27, 2020, 10:03:16 PM
Quote from: SHOdded on February 27, 2020, 08:52:07 PM
Awesome!


Thank you! I'm so glad it wasn't a fuel injector issue. That would of been a issue!! I like to do most of the work myself so I would of had to tackle that...
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