[DeTomaso] NPC - Troubleshooting OBDII "Lean Bank 2" Code
Doug
doug351c at gmail.com
Sat Jan 14 17:12:31 EST 2017
Thanks Asa,
This car’s exhaust is all stainless (stock) and is quiet enough that I would hear any leak.
I forgot to mention that the professional garage I took it to did a leak-down test and the readings were fine.
The exhaust flow out each tailpipe at 2500 RPM seems quite equal so there don’t appear to be any restrictions.
Doug
From: Asa Jay Laughton [mailto:asajay at asajay.com]
Sent: Friday, January 13, 2017 1:42 PM
To: Doug <doug351c at gmail.com>
Cc: POCA Forum Mailing List <detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] NPC - Troubleshooting OBDII "Lean Bank 2" Code
Geeez Doug, it sounds like the only thing you haven't replaced is the loose nut behind the steering wheel. ;)
The first thing that came to mind was doing a cylinder leak-down. It seems you've gone after all the other obvious things, that now it may boil down to something more severe and more mechanical. I'm no expert mind you. And what about an exhaust restriction or cracked header?
Asa
Sent using Jedi Mind Tricks
Doug <doug351c at gmail.com <mailto:doug351c at gmail.com> > wrote:
Hi Guys,
I'm asking "the collective" for ideas on where to go from here on a problem
with my 1998 Mustang Cobra.
About a year and a half ago, it started throwing a P0174 "Lean Bank 2"
Check Engine code and I've done the following in an attempt to fix it.
After each mod was made, it took about 180 miles of driving for the code to
reappear (since this code means the ECU hitting its max long term enrichment
limit).
The car otherwise drives fine, so once this limit is reached, it's still a
very enjoyable drive.
Doug Braun
Blue 73L #5505
DATE MILES REPAIR
Sep2014 87,000 Replaced IAC IAC (Idle Air Control) Valve - Autozone
Duralast TV228
Oct2014 88,000 Replaced Mass Airflow Sensor - Autozone/Cardone 74-9524
Jul2015 105,000 Replaced Throttle Position Sensor - O'Reilly - BWD
EC3025P
Jan2016 111,095 Replaced both Upstream O2 Sensors - RockAuto/NTK 22016
Feb2016 111,762 Replaced Intake Air Tract Temperature Sender (IAT
Sensor) - SMP
Replaced Coolant Temperature Sender (Sensor) -
SMP
Replaced Spark Plug Wires
Mar2016 111930 At this point, I took the car to a professional Garage.
They found a
bank 2 intake manifold leak and replaced the
Intake Manifold Gaskets
(manifold to runner + runner to head + upper
Intake).
Replaced the Plenum Seal.
Had Dr. Injector http://docinjector.com/ clean
& flow match the Fuel Injectors.
Apr2016 112,105 Replaced Fuel Pressure Regulator - Motorcraft
May2016 112,385 I bought one new coil pack and used it to temporarily
replace each original coil pack.
With the new pack in each location, the code
reappeared.
Dec2016 112,840 Replaced Fuel Pump Assembly - Airtex (sock filters,
wiring harness, case, flange & gasket)
Hi Guys,
I'm asking "the collective" for ideas on where to go from here on a
problem with my 1998 Mustang Cobra.
About a year and a half ago, it started throwing a P0174 "Lean Bank 2"
Check Engine code and I've done the following in an attempt to fix it.
After each mod was made, it took about 180 miles of driving for the
code to reappear (since this code means the ECU hitting its max long
term enrichment limit).
The car otherwise drives fine, so once this limit is reached, it's
still a very enjoyable drive.
Doug Braun
Blue 73L #5505
DATE MILES REPAIR
Sep2014 87,000 Replaced IAC IAC (Idle Air Control) Valve - Autozone
Duralast TV228
Oct2014 88,000 Replaced Mass Airflow Sensor - Autozone/Cardone
74-9524
Jul2015 105,000 Replaced Throttle Position Sensor - O'Reilly - BWD
EC3025P
Jan2016 111,095 Replaced both Upstream O2 Sensors - RockAuto/NTK
22016
Feb2016 111,762 Replaced Intake Air Tract Temperature Sender (IAT
Sensor) - SMP
Replaced Coolant Temperature Sender
(Sensor) - SMP
Replaced Spark Plug Wires
Mar2016 111930 At this point, I took the car to a professional
Garage. They found a
bank 2 intake manifold leak and replaced
the Intake Manifold Gaskets
(manifold to runner + runner to head +
upper Intake).
Replaced the Plenum Seal.
Had Dr. Injector
[1]http://docinjector.com/ clean & flow match the Fuel Injectors.
Apr2016 112,105 Replaced Fuel Pressure Regulator - Motorcraft
May2016 112,385 I bought one new coil pack and used it to
temporarily replace each original coil pack.
With the new pack in each location, the
code reappeared.
Dec2016 112,840 Replaced Fuel Pump Assembly - Airtex (sock filters,
wiring harness, case, flange & gasket)
References
1. http://docinjector.com/
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-------------- next part --------------
Thanks Asa,
This car's exhaust is all stainless (stock) and is quiet enough that I
would hear any leak.
I forgot to mention that the professional garage I took it to did a
leak-down test and the readings were fine.
The exhaust flow out each tailpipe at 2500 RPM seems quite equal so
there don't appear to be any restrictions.
Doug
From: Asa Jay Laughton [mailto:asajay at asajay.com]
Sent: Friday, January 13, 2017 1:42 PM
To: Doug <doug351c at gmail.com>
Cc: POCA Forum Mailing List <detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] NPC - Troubleshooting OBDII "Lean Bank 2" Code
Geeez Doug, it sounds like the only thing you haven't replaced is the
loose nut behind the steering wheel. ;)
The first thing that came to mind was doing a cylinder leak-down. It
seems you've gone after all the other obvious things, that now it may
boil down to something more severe and more mechanical. I'm no expert
mind you. And what about an exhaust restriction or cracked header?
Asa
Sent using Jedi Mind Tricks
Doug <[1]doug351c at gmail.com> wrote:
Hi Guys,
I'm asking "the collective" for ideas on where to go from here on a
problem
with my 1998 Mustang Cobra.
About a year and a half ago, it started throwing a P0174 "Lean Bank 2"
Check Engine code and I've done the following in an attempt to fix it.
After each mod was made, it took about 180 miles of driving for the
code to
reappear (since this code means the ECU hitting its max long term
enrichment
limit).
The car otherwise drives fine, so once this limit is reached, it's
still a
very enjoyable drive.
Doug Braun
Blue 73L #5505
DATE MILES REPAIR
Sep2014 87,000 Replaced IAC IAC (Idle Air Control) Valve - Autozone
Duralast TV228
Oct2014 88,000 Replaced Mass Airflow Sensor - Autozone/Cardone
74-9524
Jul2015 105,000 Replaced Throttle Position Sensor - O'Reilly - BWD
EC3025P
Jan2016 111,095 Replaced both Upstream O2 Sensors - RockAuto/NTK
22016
Feb2016 111,762 Replaced Intake Air Tract Temperature Sender (IAT
Sensor) - SMP
Replaced Coolant Temperature Sender
(Sensor) -
SMP
Replaced Spark Plug Wires
Mar2016 111930 At this point, I took the car to a professional
Garage.
They found a
bank 2 intake manifold leak and replaced
the
Intake Manifold Gaskets
(manifold to runner + runner to head +
upper
Intake).
Replaced the Plenum Seal.
Had Dr. Injector
[2]http://docinjector.com/ clean
& flow match the Fuel Injectors.
Apr2016 112,105 Replaced Fuel Pressure Regulator - Motorcraft
May2016 112,385 I bought one new coil pack and used it to
temporarily
replace each original coil pack.
With the new pack in each location, the
code
reappeared.
Dec2016 112,840 Replaced Fuel Pump Assembly - Airtex (sock filters,
wiring harness, case, flange & gasket)
Hi Guys,
I'm asking "the collective" for ideas on where to go from here on a
problem with my 1998 Mustang Cobra.
About a year and a half ago, it started throwing a P0174 "Lean Bank
2"
Check Engine code and I've done the following in an attempt to fix
it.
After each mod was made, it took about 180 miles of driving for the
code to reappear (since this code means the ECU hitting its max long
term enrichment limit).
The car otherwise drives fine, so once this limit is reached, it's
still a very enjoyable drive.
Doug Braun
Blue 73L #5505
DATE MILES REPAIR
Sep2014 87,000 Replaced IAC IAC (Idle Air Control) Valve -
Autozone
Duralast TV228
Oct2014 88,000 Replaced Mass Airflow Sensor - Autozone/Cardone
74-9524
Jul2015 105,000 Replaced Throttle Position Sensor - O'Reilly -
BWD
EC3025P
Jan2016 111,095 Replaced both Upstream O2 Sensors - RockAuto/NTK
22016
Feb2016 111,762 Replaced Intake Air Tract Temperature Sender
(IAT
Sensor) - SMP
Replaced Coolant Temperature Sender
(Sensor) - SMP
Replaced Spark Plug Wires
Mar2016 111930 At this point, I took the car to a professional
Garage. They found a
bank 2 intake manifold leak and
replaced
the Intake Manifold Gaskets
(manifold to runner + runner to head +
upper Intake).
Replaced the Plenum Seal.
Had Dr. Injector
[1][3]http://docinjector.com/ clean & flow match the Fuel Injectors.
Apr2016 112,105 Replaced Fuel Pressure Regulator - Motorcraft
May2016 112,385 I bought one new coil pack and used it to
temporarily replace each original coil pack.
With the new pack in each location,
the
code reappeared.
Dec2016 112,840 Replaced Fuel Pump Assembly - Airtex (sock
filters,
wiring harness, case, flange & gasket)
References
1. [4]http://docinjector.com/
_______________________________________________
Detomaso Email List is not managed by POCA
Posted emails must not exceed 1.5 Megabytes
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References
1. mailto:doug351c at gmail.com
2. http://docinjector.com/
3. http://docinjector.com/
4. http://docinjector.com/
5. mailto:DeTomaso at server.detomasolist.com
6. http://server.detomasolist.com/mailman/listinfo/detomaso
More information about the DeTomaso
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