Misfire under hard acceleration

[Johnbigdog]

Dtcs are great. Knowing what module they set in is better.

 

[Rayme20]

Call me a noob, I have no clue.

Dtcs are great. Knowing what module they set in is better.

 

[SHOdded]

U0415 is invalid data from ABS - probably can be ignored in this case
B108E is something to do with Sync/APIM, another red herring probably
U3000 is a CAN network error, red herring
C0062 is a longitudinal acceleration sensor (I believe the yaw sensor) code, red herring

The P0420/30 are likely the only real codes, and they may be indirectly pointing to issues other than the cats. Do you know fuel trims? Want to make sure there isnt injector failure.

Also how long ago were the DPs installed? Might be the fasteners need retightening.

 

[StealBlueSho]

It started misfiring again a couple days later. I do have a few DTCs it has thrown, I know what a couple are but the rest in not sure.
C0062
PO420
PO430
U3000
B108E
U0415

I am sure some of them are from running a stock tune with having downpipes. And I'm thinking another couple are what are causing my phone to crash the Bluetooth. I just don't want to go in and have them tell me the misfire is because I have downpipes, when most here have downpipes with no issues. I would like to know if there are any I can tell them about that may be causing an issue.

P0430 and P0420 are from the down pipes for sure...that's the rear O2 sensors complaining that that the emissions from the car are not within tolerances..

Those codes should not impact driving at all..

Nothing there talks about or eludes to a miss...

 

[Rayme20]

Downpipes have been have been on for about 6 months. And to be clear as long as my 93 octane tune is on I have never gotten the p0420/30, I have had issues with my sync crashing the Bluetooth on my phone, I'm thinking one of the "Red Herring" May be the cause of that one. How do I find the fuel trims?

U0415 is invalid data from ABS - probably can be ignored in this case
B108E is something to do with Sync/APIM, another red herring probably
U3000 is a CAN network error, red herring
C0062 is a longitudinal acceleration sensor (I believe the yaw sensor) code, red herring

The P0420/30 are likely the only real codes, and they may be indirectly pointing to issues other than the cats. Do you know fuel trims? Want to make sure there isnt injector failure.

Also how long ago were the DPs installed? Might be the fasteners need retightening.

 

[StealBlueSho]

That 93 tune disables the rear O2s which is why you don't get those dtcs...

 

[SHOdded]

You can run Torque Pro or Forscan Lite on your Android device and monitor. Both can also log 4 u. About 5 bucks a program.

 

[Rayme20]

I have torque pro what do I need to see with it?

 

[StealBlueSho]

A Bluetooth OBD2 adapter on your car.

 

[Rayme20]

No I have that I am asking which perimeter I should be monitoring.

 

[SHOdded]

Basically, you would be looking at short term fuel trims (STFT) and long term fuel trim (LTFT) for each bank under idle, cruise, acceleration, WOT, deceleration conditions. If you can tell when the misfire happens, that helps of course. Also add in the front & rear O2 sensors for each bank (maybe just front since rears are turned off?). Then some other standard things like engine rpm, speed, gear, rear fuel pressure/HPFP fuel pressure, LPFP duty cycle. I will try and dig up a setup that is frequently used, but I am sure StealBlue has some handy also?

 

[SHOdded]

One possibility

Another


Knock Retard is a custom parameter in Torque Pro, you have to create it to use it. Might be some others, in that layout also, but most should be standard.

Custom parameters for the SHO can be found here:
http://www.ecoboostperformanceforum.com/index.php/topic,3141.0.html
Some folks have found that 2013+ need a little tweaking on some of them. Feel free to add to that thread if you run into an issue with the custom stuff.

 

[Rayme20]

Is there anything else it could be called? I do not see fuel trims as an option?

 

[SHOdded]

I will have to defer to someone else for the exact names, as I do not have access to these vehicles.

 

[Rayme20]

My Obd doesn't show fuel pressure or anything of the sort, is that because it's a cheapy?

 

[SHOdded]

Shouldn't make a difference AFAIK. It may not pick up some of the stuff on other communication networks that Ford uses, but this is basic info. I would scroll through the availabile parameters and look for anything that says FUEL.

Stupid Q, but you are sure you have Torque Pro, or do you have the free version.

 

[Johnbigdog]

How would fuel trims, pressures, knock help for a single cylinder misfire?

 

[SHOdded]

Looking for a trend. Since a misfire can be a plug, a coil, an injector. This is the easiest way IMO to look at the possibilities. Still could end up being a wiring issue, but u have to start somewhere.

A single cylinder misfire, particularly on these engines, if on bank 1 could be due to a leaking valve cover gasket.

 

[Rayme20]

100% paid version

Shouldn't make a difference AFAIK. It may not pick up some of the stuff on other communication networks that Ford uses, but this is basic info. I would scroll through the availabile parameters and look for anything that says FUEL.

Stupid Q, but you are sure you have Torque Pro, or do you have the free version.

 

[Rayme20]

It's just a weird issue, I turned my Bluetooth off because sync was crashing my Bluetooth on my Obd and no issue, so odd.