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Default car drops to map 4 and hits limp mode. - 04-13-2019, 09:34 AM

I really don't know much about this but after researching and logging I think I may have a bad sensor since the lpfp reading seems stuck. Is this possible or am I miss interpreting. Also I am getting 30ff 29f3 2c3d 2caa and 29e0. Here are three logs one map1 and two map4. I appreciate any input and help diagnosing my problem. Plugs and coils were changed 1 week ago and have less then 200 miles on them. mods are cobb cp, cpe fmic, bms dci and jb4.
Attached Files
File Type: csv 2019-04-12 23_25_01_Map-1.csv (35.8 KB, 14 views)
File Type: csv 2019-04-12 23_26_54_Map-4.csv (49.6 KB, 10 views)
File Type: csv 2019-04-12 23_28_02_Map-4.csv (47.7 KB, 8 views)
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Default 04-13-2019, 02:07 PM

Your bank 1 is stuck full lean which would trigger safety. 2C3D and 2CAA are pre-ct O2 sensor error codes for bank 1, 29E0 is fuel mixture problem bank 1.

There may be other issues, but take care of that one first.
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Default 04-14-2019, 04:30 PM

Quote:
Originally Posted by Vorsprung_CJB
Your bank 1 is stuck full lean which would trigger safety. 2C3D and 2CAA are pre-ct O2 sensor error codes for bank 1, 29E0 is fuel mixture problem bank 1.

There may be other issues, but take care of that one first.
Should I start by changing o2 sensors or somewhere else? Thanks for the response.
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Default 04-14-2019, 04:46 PM

Yes you would at least need the bank 1 o2 but doing both is probably a good idea.

Maybe someone can give a second opinion because I'm not always right. It is a common problem as these cars get older though.
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Default 04-14-2019, 05:24 PM

Quote:
Originally Posted by Vorsprung_CJB
Yes you would at least need the bank 1 o2 but doing both is probably a good idea.

Maybe someone can give a second opinion because I'm not always right. It is a common problem as these cars get older though.
Ill give this a shot. Thank you for taking the time to help.
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Default 04-14-2019, 10:08 PM

Quote:
Originally Posted by bit
Ill give this a shot. Thank you for taking the time to help.
Oem or NTK sensors seem to be the go to for replacement

FCP EURO, & you’ll get lifetime warranty



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Default 04-15-2019, 01:57 PM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
Oem or NTK sensors seem to be the go to for replacement

FCP EURO, & you’ll get lifetime warranty
I usually use fcp because of that thanks.
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Default 04-16-2019, 11:09 AM

Quote:
Originally Posted by bit
I usually use fcp because of that thanks.



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Default 04-20-2019, 08:46 PM

well I changed the o2 sensors and the low pressure fuel sensor and still get o2 errors but different ones and still get 30ff but not as frequently and still drop to limp mode. the codes now are (2c3d,2caa) or (2c31 ,2c27) with the occasional 30ff with one of the pairs. here are some new logs with one that went to limp mode mid pull.
Attached Files
File Type: csv 2019-04-20 23_20_20_Map-1.csv (31.4 KB, 13 views)
File Type: csv 2019-04-20 23_21_35_Map-1.csv (16.0 KB, 10 views)
File Type: csv 2019-04-20 23_23_23_Map-1.csv (37.6 KB, 9 views)
File Type: csv 2019-04-20 23_23_54_Map-4.csv (25.8 KB, 9 views)
File Type: csv 2019-04-20 23_24_41_Map-4.csv (28.1 KB, 7 views)
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Default 04-21-2019, 11:59 PM

Quote:
Originally Posted by bit
well I changed the o2 sensors and the low pressure fuel sensor and still get o2 errors but different ones and still get 30ff but not as frequently and still drop to limp mode. the codes now are (2c3d,2caa) or (2c31 ,2c27) with the occasional 30ff with one of the pairs. here are some new logs with one that went to limp mode mid pull.
Can you post the descriptions



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Default 04-22-2019, 07:21 AM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
Can you post the descriptions
Sure thing. Lambda infront of ***,control failure. Lambda before ***, temperature. Boost under target, possible leak. Lambda probe infront of ***, system check. Lambda probe infront of ***, trimming control New for my drive to work 2d2e angle of throttle valve-intake pipe under pressure, correlation.

I have a ton of issues now it would apear.
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Default 04-22-2019, 09:17 AM

That sucks, looks similar to the earlier logs with bank 1 lean. Some of them look like a boost leak too but maybe just due to the running condition. In some cases the rear sensors may have to be replaced too. Maybe there is a bad injector in bank 1? You could check the plugs condition for that. I'm not sure what else could cause that situation.

Last edited by Vorsprung_CJB; 04-22-2019 at 09:23 AM..
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Default 04-23-2019, 12:32 AM

Quote:
Originally Posted by Vorsprung_CJB
That sucks, looks similar to the earlier logs with bank 1 lean. Some of them look like a boost leak too but maybe just due to the running condition. In some cases the rear sensors may have to be replaced too. Maybe there is a bad injector in bank 1? You could check the plugs condition for that. I'm not sure what else could cause that situation.
Took the words out of my mouth.

Before you start car - check the plugs, see if wet

Wouldn’t hurt to swap the rear O2s as well.

Did u do an adaptation reset after the new O2s went in?



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Default 04-23-2019, 08:08 AM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
Took the words out of my mouth.

Before you start car - check the plugs, see if wet

Wouldn’t hurt to swap the rear O2s as well.

Did u do an adaptation reset after the new O2s went in?
How long do i need to wait to check plugs. I was debating on checking them by pulling them out and unplugging them to see if they leak. Might order rears. Wonder if I messed up the one sensor putting it in. I did the 1 7 reset with the jb4 is that right?
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Default 04-23-2019, 09:35 PM

Quote:
Originally Posted by bit
How long do i need to wait to check plugs. I was debating on checking them by pulling them out and unplugging them to see if they leak. Might order rears. Wonder if I messed up the one sensor putting it in. I did the 1 7 reset with the jb4 is that right?
If you let the car sit overnight - that’s plenty

Wouldn’t rule out a damaged sensor - common / they can be a bit fragile

U can reset via JB4 / wheel controls or wirh mhd



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Default 05-14-2019, 03:41 PM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
If you let the car sit overnight - that’s plenty

Wouldn’t rule out a damaged sensor - common / they can be a bit fragile

U can reset via JB4 / wheel controls or wirh mhd
Sorry it's been awhile but i pulled plugs after hrs and they look dry and don't smell of gas. I then put them back and disconnected the injector wires and turned over the motor to see if they leaked under pressure. Once again no moisture or smell. My logs still look like they are lean on bank one. sometimes I get a ruff cold start but others it seems fine.
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Default 05-14-2019, 05:41 PM

Did any of the plugs look different than the others? Black/white?

Did you reset adaptations after the sensor change?

I went backed and looked at your last logs again. Trims were all messed up, in and out of closed loop, there would have to be some kind of sensor or fueling system electronics problem. I'm not sure a hardware problem could cause that but you never know.

Do you have MSD80 or MSD81 DME?
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Default 05-17-2019, 07:42 AM

Quote:
Originally Posted by Vorsprung_CJB
Did any of the plugs look different than the others? Black/white?

Did you reset adaptations after the sensor change?

I went backed and looked at your last logs again. Trims were all messed up, in and out of closed loop, there would have to be some kind of sensor or fueling system electronics problem. I'm not sure a hardware problem could cause that but you never know.

Do you have MSD80 or MSD81 DME?
To me they all looked the same.

I did reset the adaptations with the jb4.

I don't know which dme I have. I'll find out.
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Default 05-20-2019, 05:37 PM

So I decided to do another leak test and smoke test. Turns out i'm harder of hearing then I realised. I didn't hear any thing but my buddy did. He touched the charge pipe while pointing out a sound then it let go. All presure bled off. We took it off and realised there was just grease as a seal. No oring. I ordered one and hope that stops the leak. Don't know if that would effect the lean code or trims.
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Default 05-22-2019, 06:01 PM

So after installing a charge pipe o-ring I no longer have the 30ff code or any codes except for 2c3d lambda probe in front of *** control failure and 2caa lambda before *** temperature. My car still drops to map 4 during a pull. I took some new logs when looking at the graphs of a pull in map 5 and 4 the trims look similar and sporadic but the graph of a map 2 pull looks cleaner to me if I'm reading it right.
Attached Files
File Type: csv 2019-05-22 19_13_14_Map-5.csv (22.3 KB, 4 views)
File Type: csv 2019-05-22 19_15_33_Map-4.csv (20.2 KB, 3 views)
File Type: csv 2019-05-22 19_17_46_Map-2.csv (25.9 KB, 5 views)
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Default 05-23-2019, 12:20 AM

Your still way under target

Lower your FF manually to 80 or 90

Are you using a BEF?



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Default 06-04-2019, 11:17 AM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
Your still way under target

Lower your FF manually to 80 or 90

Are you using a BEF?
I'll try that. No BEF at the moment waiting till I get everything sorted first. Sorry I took so long to reply Spring means farming. The lack of 30ff only lasted a day and it's been back since. I need to do another smoke test and leak test. I also may do a back pressure test if I can remember where I put the old o2 sensor to make a pressure gauge adapter after reading a threads that had similar issues because of a clogged ***.
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Default 06-04-2019, 12:36 PM

Quote:
Originally Posted by bit
I'll try that. No BEF at the moment waiting till I get everything sorted first. Sorry I took so long to reply Spring means farming. The lack of 30ff only lasted a day and it's been back since. I need to do another smoke test and leak test. I also may do a back pressure test if I can remember where I put the old o2 sensor to make a pressure gauge adapter after reading a threads that had similar issues because of a clogged ***.
No worries, keep us posted.

Random- where is your farm?



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Default 06-05-2019, 11:00 AM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
No worries, keep us posted.

Random- where is your farm?
Did a vacuum test yesterday like the bms video it had 18psi at stock setting and 25 at 100%.

It's in northern wv.
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Default 06-05-2019, 11:26 AM

When I do my pressure test it says to block off at the pcv heater. I did that and get air coming out the pcv. Is it supposed to do that? should I block it as well?
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