Yet more issues. Multiple DTC's.

[Tom]

Canned KB tune from Mike. No other tune has ever been on the car. Been WANTING to get it tuned, just haven't found anybody I wanna let get into it.



Will do that tomorrow when I can get it on a lift, and get the O2's out of there. I ran the rest of the fuel that was IN IT, with the Redline additive, down until the gas light came on, and filled it up to a half tank tonight on the way home from work.

Any chance this will "push itself" out of the system? After/without cleaning out the O2's?

Well if let me know if you need anyhelp. We have tuned many of these.

 

[Miracle]

Tom... could it be that I have fixed the actual problem of the spark plugs, in all honesty, and the computer just hasn't "learned" that I have fixed it?

If so, what do I need to do next? Turn off the DTC's? Disconnect the battery? Cast a spell on it?

 

[marcspaz]

Will do that tomorrow when I can get it on a lift, and get the O2's out of there. I ran the rest of the fuel that was IN IT, with the Redline additive, down until the gas light came on, and filled it up to a half tank tonight on the way home from work.

Any chance this will "push itself" out of the system? After/without cleaning out the O2's?

Cool, you should be good on the fuel side then. Did you put 93 or higher in?

I doubt those O2 sensors will self-clean. It is too hot and dry, esp before the cats. It only takes a few minutes to clean them. (hopefully they don't need to get replaced)

You will still want to clear the STFT tables by disconnecting the battery too. If the tables have bad learned data, it may never run right until it's cleared.

 

[SilentScope]

The O2's wont come clean "by themselves" any time soon.
theres probably a stubborn carbon and unburnt fuel residue stuck on them..
i wouldnt take a risk..
cleaning them is cheap insurance...

 

[white05gt]

Ok... new code after replacing the other plugs in the motor... all 8 cylinders have new HT0's.

P0401 Exhaust Gas Recirculation Flow Insufficient Detected

WTF?

I'm confused, our cars don't have an egr system on them. Am I missing something here? I will be the first to tell you that I'm still learning all the computer related stuff.

 

[marcspaz]

I'm confused, our cars don't have an egr system on them. Am I missing something here? I will be the first to tell you that I'm still learning all the computer related stuff.

You are right. No EGR on these cars. I just ignored that post, as I think the computer is confused.

 

[SilentScope]

the fuel map on the computer is probably messed up and confused,
disconnecting the battery / reflashing may help?

 

[Tom]

Tom... could it be that I have fixed the actual problem of the spark plugs, in all honesty, and the computer just hasn't "learned" that I have fixed it?

If so, what do I need to do next? Turn off the DTC's? Disconnect the battery? Cast a spell on it?

What mid pipe do you have?? do you have cats???

As for clearing the code. I would do that and disconnect the batter just for shits and giggles. As for cleaning the 02 sensors, it wouldnt hurt. If it works it works.

Did you gap the pugs???

 

[Miracle]

Ok so no EGR... computer is just thinking out of it's ass...

Good idea to disconnect the battery overnight, until I go to work in the morning?

Mid pipe is a Bassani modular X with the high flow cats installed, OEM stock O2 sensors.

 

[white05gt]

My thought was something with the tune or the computer is screwed up but I wasn't sure. I was confused because I figured you guys would have caught that.

 

[marcspaz]

the fuel map on the computer is probably messed up and confused,
disconnecting the battery / reflashing may help?

I am not sure what you mean by "fuel map". I can tell you that some of the adaptive learning tables get cleared with a long battery disconnect.

 

[Tom]

the fuel map on the computer is probably messed up and confused,
disconnecting the battery / reflashing may help?

What is interesting about this is the 02's would make sence(not saying its the prob) becuase if the sensors are dirty it could make the system change loop( meaning going from closed to open loop and vise verse) Thats a possibility, Im suprised I didnt think of that. Im interested to see how this turns out
These are the things that make you rethink everything you think you know lol

 

[Tom]

I am not sure what you mean by "fuel map". I can tell you that some of the adaptive learning tables get cleared with a long battery disconnect.

Its the tables that are used when writing a tune. It pretty cool actually.

 

[SilentScope]

by fuel map i mean the formula uses to adjust for lean/rich detection...
idk what the computer/you guys call it?
but its an adaptive learning process by the computer (i think it does the same with the VCT)
BC the O2's are most likely not working properly and/or the spark plugs, the computer may be over/under compensating fuel delivery or spark...
I THINK lol

 

[marcspaz]

Ok so no EGR... computer is just thinking out of it's ass...

Good idea to disconnect the battery overnight, until I go to work in the morning?

Mid pipe is a Bassani modular X with the high flow cats installed, OEM stock O2 sensors.

Overnight does not hurt or help. It takes about 10 maybe 15 min tues for all of the stored energy to drain. Once that happens the tables clear. again, overnight won't hurt...

Ford knows tihs is a regular issue with are cars. Once you hook the battery back up, follow the directions in your owners manual about resetting the short term fuel tables after changing your battery. It is pretty straight forward.

 

[Miracle]

Ok... gotcha. Battery has been disconnected, will reconnect in the morning.

Hopefully this resolves the issue at hand... if not, I'mma be one hell of a angry person tomorrow. lol.

 

[marcspaz]

What is interesting about this is the 02's would make sence(not saying its the prob) becuase if the sensors are dirty it could make the system change loop( meaning going from closed to open loop and vise verse) Thats a possibility, Im suprised I didnt think of that. Im interested to see how this turns out
These are the things that make you rethink everything you think you know lol

LOL... I have had a few moments like that. It's fun, but in a twisted kind of way. LOL

Its the tables that are used when writing a tune. It pretty cool actually.

Ah, ok. cool. I have a lot to learn on the tuning side.

 

[SilentScope]

Ok... gotcha. Battery has been disconnected, will reconnect in the morning.

Hopefully this resolves the issue at hand... if not, I'mma be one hell of a angry person tomorrow. lol.

LOL

poor you, be sure to let us know how it turns out so we can identify this problem and get you back on the road...

Yea, the computer works with a lot of tables, maps and equations to stay within certain pre-set parameters, and thats where tuning comes in and destroys that horrid word of "PRE-SET"

 

[marcspaz]

Ok... gotcha. Battery has been disconnected, will reconnect in the morning.

Hopefully this resolves the issue at hand... if not, I'mma be one hell of a angry person tomorrow. lol.

LOL... Try not to get to mad. It's hard to think clearly when you get upset. If it doesn't help, we can just move on to the next most likely item(s).

Keep in mind... it's hard to troubleshoot over the internet. You may need to go to a shop if it is not something easy like we are talking about.

 

[Tom]

I do understand his frustration. Although my position is a little different. It goes to show even people in the industry have these issues too. Im just not afraid to talk about them. This is how knowledge is spread so please keep us updated.