[DeTomaso] NPC - Troubleshooting OBDII "Lean Bank 2" Code
Jerry Knotts
knottsj at galstar.com
Fri Jan 13 15:50:38 EST 2017
Doug,
I am not one to talk because I have a rich issue with my 95 Mustang
which is a whole different story.
You might see if you could find another ECU to replace yours on a
temporary basis.
Friend of mine used to crew chief a Ford sponsored race team and went
through 5 supercharged 4.6 engines. Three of them were on Fords' dyno.
Ford traced the problem to shutting off one injector above 7k rpm and
burning a hole in the piston. Apparently a bad part or connection in
the ECM.
I love computer controlled engines when they work correctly.
On 1/13/2017 1:26 PM, Doug 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
> [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 --------------
Doug,
I am not one to talk because I have a rich issue with my 95 Mustang
which is a whole different story.
You might see if you could find another ECU to replace yours on a
temporary basis.
Friend of mine used to crew chief a Ford sponsored race team and went
through 5 supercharged 4.6 engines. Three of them were on Fords'
dyno. Ford traced the problem to shutting off one injector above 7k
rpm and burning a hole in the piston. Apparently a bad part or
connection in the ECM.
I love computer controlled engines when they work correctly.
On 1/13/2017 1:26 PM, Doug 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
[1][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. [2]http://docinjector.com/
_______________________________________________
Detomaso Email List is not managed by POCA
Posted emails must not exceed 1.5 Megabytes
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To manage your subscription (change email address, unsubscribe, etc.) use the li
nks above.
Members who post to this list grant license to the list to forward any message p
osted here to all past, current, or future members of the list. They also grant
the list owner permission to maintain an archive or approve the archiving of lis
t messages.
References
1. http://docinjector.com/
2. http://docinjector.com/
3. mailto:DeTomaso at server.detomasolist.com
4. http://server.detomasolist.com/mailman/listinfo/detomaso
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