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Finally throw some codes!!!

M

MapOfTaziFoSho

Hard-core CEG'er
Joined
Aug 31, 2002
Messages
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The Mogadishu of the Midwest
i thought that the codes where pretty self explanitory ...


P0402 is for the egr system, and of course the P0430 is for a precat and the P1000 means the PCM was just reset I believe ... other then that it is a missfire for the other codes ...

I would definately say all of that together would cause some bad drivability
 
BrApple said:
i thought that the codes where pretty self explanitory ...


P0402 is for the egr system, and of course the P0430 is for a precat and the P1000 means the PCM was just reset I believe ... other then that it is a missfire for the other codes ...

I would definately say all of that together would cause some bad drivability
Click to expand...
Correct. Check/change the DPFE for P0402. P0430, I thought you turned that off with your tuner. Run the OBD II cycle to clear the P1000 (the car will run crappy until that is cleared). As for the P03xx codes, yes, it could be a fuel pressure regulator issue. Do test the coilpack even though you say it is brand new.
 
Brapple you're killing me! I know what the codes mean! I'm just looking for out of the box ideas on what is causing them as it isn't the typical fix. The EGR has about 15k miles on it. This is the second brand new coil pack. It isn't the DPFE as I replaced that too! I then removed the system and turned it off in the tune. This didn't help. I put the EGR system back in and turned it back on. The car runs better now. I think the too much EGR flow is because of the 3L and the fact that it flows more exhaust gas....P0430 makes little sense to me because I have the lower o2s turned off.
 
ok how about this, you said you where running 42 lbs injectors? could that just be to much fuel for a n/a aplication to run correctly? also maybe a bad fuel regualtor ins;;t helping this on top of it ...
 
He did. Don't know why and no one got the joke. FPR never go out in these cars it seems. Sure you don't have a vac. leak?
 
todras said:
He did. Don't know why and no one got the joke. FPR never go out in these cars it seems. Sure you don't have a vac. leak?
Click to expand...

Positive. no hanging, no surging idle.

I am wondering if maybe Stazi had heated the FPR while building the fuel rail? :blackeye:

I mean I am really really lost.


I've replaced the FPR once on this car, but like you had said I had never really heard of too many issues with them on our cars.
 
So I got it down to two codes.

P0172 and P0402

I replaced the DPFE and nothing.

Swapped MAF's with someone else and nothing.

I also Replaced the Fuel pump and swapped the FPR with someone else and nothing.

I had the p0402 go away when I removed the EGR system and turned it off in the tune, but the car still would go lean right away. I then re-installed the system and turned it back on.

Any thoughts?!

I returned the tune back to stock and I still have the same lean condition. :nonono:

Seriously, with all the knowledge on this site...nothing is helping me. I have tried everything I can think of and then I tried all the suggestions given to me by friends and people on CEG.

What is causing this! :nonono:
 
MapOfTaziFoSho said:
So I got it down to two codes.

P0172 and P0402
Click to expand...

MapOfTaziFoSho said:
... I still had the lean condition. .....
Click to expand...

It's rich, Man, it's rich.

P0172 - System Too Rich (Bank 1)The Adaptive Fuel Strategy continuously monitors fuel delivery hardware. The code sets when the adaptive fuel tables reach a lean calibrated limit.

Fuel System:
· Excessive fuel pressure
· Leaking/contaminated fuel injectors
· Vapor recovery system concern
Base Engine:
· Oil overfill
· Cam timing concern
· Low cylinder compression
· Excessive engine wear
Powertrain Control System:
· PCM concern
Induction System:
· MAF contamination
 
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Tony2005 said:
It's rich, Man, it's rich.

P0172 - System Too Rich (Bank 1)The Adaptive Fuel Strategy continuously monitors fuel delivery hardware. The code sets when the adaptive fuel tables reach a lean calibrated limit.

Fuel System:
· Excessive fuel pressure
· Leaking/contaminated fuel injectors
· Vapor recovery system concern
Base Engine:
· Oil overfill
· Cam timing concern
· Low cylinder compression
· Excessive engine wear
Powertrain Control System:
· PCM concern
Induction System:
· MAF contamination
Click to expand...


Interesting on the Cam timing.

No way, I have an AEM wideband AFR and I am watching the thing go lean!
The PCM thinks it is going rich and therefore leans it out.

Vapor recovery system?!
PCM concern...:blackeye:

I guess I will take it all apart and re-inspect a couple other things. :blackeye:
 
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MapOfTaziFoSho said:
....No way, I have an AEM wideband AFR and I am watching the thing go lean!
The PCM thinks it is going rich and therefore leans it out.

....
Click to expand...
The car is running rich and the PCM is "leaning" it to a point where it then sets a rich code as it has reached its limits of acceptable "rich band". ;)
 
Turn off the EGR/DPFE and then address the rich code.Tony is right, the PCM "thinks" it's too rich and has dialed back the fuel as far as it can and thus has thrown a "Too Rich" code.
1st thing is forst.
Change the rear upper O2. Something is wrong with it reading too high.
 
He told be he replaced "everything" yesterday. He didn't do O2's I take it? I can get you up stream Bosch's for $32 a piece if needed.
 
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