FBW Throttle Failures 4 in 3 months
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Road Warrior
Joined: Apr 2007
Posts: 1,406
Likes: 5
From: Sunnyvale, Ca.
FBW Throttle Failures 4 in 3 months
FBW Throttle Failures 4 in 3 months
2009 FLHTCU 103 , SE Heads , 10:5:1
255 cams , Bassani Road Rage 2:1 Power Vision Wide Band
Running the SE extension to work with my WO575 Chubby
Harley keeps warranty the part but no solution to the reason I keep burning these out..
Tried New Relays , Cleaned , Grease the pins on Throttle Body 54mm with 5.3 Injectors
Fuses are all new ..
Any ideas ???
2009 FLHTCU 103 , SE Heads , 10:5:1
255 cams , Bassani Road Rage 2:1 Power Vision Wide Band
Running the SE extension to work with my WO575 Chubby
Harley keeps warranty the part but no solution to the reason I keep burning these out..
Tried New Relays , Cleaned , Grease the pins on Throttle Body 54mm with 5.3 Injectors
Fuses are all new ..
Any ideas ???
Last edited by trackadaptor; Dec 26, 2014 at 10:46 PM.
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
the TPS has 2 sensors.
what failure are your seeing- are you able to check control voltages ( sweep from about .4VDC to 4.8VDC) on both sensors?
check resistance ( and I would include the added wiring) should be 2 ohms I think.
really though if HD is going to keep warrantying the part, they should take the time to use the breakout box to check each part of the sensor and wiring.
many of the results in the manual point to replacing the ECM...could your tuner be giving spurious sensor or actuators signals ( which may involve too low or too high voltages)
mike
what failure are your seeing- are you able to check control voltages ( sweep from about .4VDC to 4.8VDC) on both sensors?
check resistance ( and I would include the added wiring) should be 2 ohms I think.
really though if HD is going to keep warrantying the part, they should take the time to use the breakout box to check each part of the sensor and wiring.
many of the results in the manual point to replacing the ECM...could your tuner be giving spurious sensor or actuators signals ( which may involve too low or too high voltages)
mike
Road Warrior
Joined: Oct 2008
Posts: 1,692
Likes: 22
From: Denham Springs, La
I assume you are getting a "check engine light" and the bike goes into limp mode.
If so, the TBW cable goes from the fairing, through a clamp on the right side of the neck in front of the gas tank. Wiggle that cable with the bike running and see if you can get a CEL and limp mode. Could be a broken wire in there as the cable may be be pulled tight and moving the handlebars left and right can cause problems.
Check and wiggle wires and plug to the t map sensor connector on the top of the throttle body, wiggle wires and plug on the throttle body connector to the rear of the air cleaner and wiggle wires and plug to the ECM.
I've had all these things cause my bike to go into limp mode with limited or no throttle response.
The dealer finally changed out all the pins on the connectors related to TBW and I've had no problems since (knock on wood).
Your Power Vision tuner only programs the ECM. It does not send or interrupt signals to or from the ECM.
HD TBW sucks!
If so, the TBW cable goes from the fairing, through a clamp on the right side of the neck in front of the gas tank. Wiggle that cable with the bike running and see if you can get a CEL and limp mode. Could be a broken wire in there as the cable may be be pulled tight and moving the handlebars left and right can cause problems.
Check and wiggle wires and plug to the t map sensor connector on the top of the throttle body, wiggle wires and plug on the throttle body connector to the rear of the air cleaner and wiggle wires and plug to the ECM.
I've had all these things cause my bike to go into limp mode with limited or no throttle response.
The dealer finally changed out all the pins on the connectors related to TBW and I've had no problems since (knock on wood).
Your Power Vision tuner only programs the ECM. It does not send or interrupt signals to or from the ECM.
HD TBW sucks!
Thread Starter
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Road Warrior
Joined: Apr 2007
Posts: 1,406
Likes: 5
From: Sunnyvale, Ca.
Wow Great Advice !! I'm all over it...
Code p1511 only code that pops up
The ECM was replaced , Pins as well early this year.. 80,000 Mile mark
Sensors?? -- I'll print this out give to the tech....
Thank you 😎
Code p1511 only code that pops up
The ECM was replaced , Pins as well early this year.. 80,000 Mile mark
Sensors?? -- I'll print this out give to the tech....
Thank you 😎
Last edited by trackadaptor; Dec 27, 2014 at 06:08 AM.
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
P1511 Power Management: Provides more limitation on
driveability, due to failure of the TCA, without a TGS, MAP
or airflow faults. The TCA is de-energized and the throttle
plate returns to its idle detent position. The ECM monitors
the operation of the TGS and adjusts the spark advance
and cylinder shutoff/rev limiting, allowing the vehicle to
reach traffic speeds (limp-home).
If you are working with teh Dealer, the electrical manual has diagnostics using a breakout box which allows tests to be done while everything is still connected and able to run.
if has a "flow chart" approach with "if this, that that" approach to the checks.
if you can get you hands on one, it makes for good reading and an overview of possible sources of failures.
I am somewhat skeptical that the dealer is just replacing parts rather than diagnosing the fault- and replacing the failed part
this system works well for alot of us.... get to the source of the failure(s)
mike
driveability, due to failure of the TCA, without a TGS, MAP
or airflow faults. The TCA is de-energized and the throttle
plate returns to its idle detent position. The ECM monitors
the operation of the TGS and adjusts the spark advance
and cylinder shutoff/rev limiting, allowing the vehicle to
reach traffic speeds (limp-home).
If you are working with teh Dealer, the electrical manual has diagnostics using a breakout box which allows tests to be done while everything is still connected and able to run.
if has a "flow chart" approach with "if this, that that" approach to the checks.
if you can get you hands on one, it makes for good reading and an overview of possible sources of failures.
I am somewhat skeptical that the dealer is just replacing parts rather than diagnosing the fault- and replacing the failed part
this system works well for alot of us.... get to the source of the failure(s)
mike
Last edited by mkguitar; Dec 27, 2014 at 02:46 PM.
Cruiser
Joined: Oct 2006
Posts: 180
Likes: 3
From: Olney, Il
Don't say HD TBW sucks, had a 2008 Ultra Classic with over 65000 miles and washed at the car wash after every ride and NEVER gave me any trouble and the bike never left me sitting on the side of the road. Have a 2014 Ultra Limited with over 12000 miles and has not missed a lick yet. Both bikes have been very dependable to date.
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Road Warrior
Joined: Oct 2008
Posts: 1,692
Likes: 22
From: Denham Springs, La
Don't say HD TBW sucks, had a 2008 Ultra Classic with over 65000 miles and washed at the car wash after every ride and NEVER gave me any trouble and the bike never left me sitting on the side of the road. Have a 2014 Ultra Limited with over 12000 miles and has not missed a lick yet. Both bikes have been very dependable to date.
After the dealership replaced the pins last time, about 20k miles ago, I haven't had any problems and I'm happy, happy, happy but I have plenty of bad memories and I see where others are still having problems-like in this thread.
If the bike makes another 100k without limp mode I WILL change my tune. In the meantime.....
HD TBW sucks.
Thread Starter
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Road Warrior
Joined: Apr 2007
Posts: 1,406
Likes: 5
From: Sunnyvale, Ca.
100% Agree...
I pick up a New Throttle Body, and Connecting Pins -
The (5th) FBW is 3 days old - I'll pick under and see if the routing is causing ant biding on the wires..
Good to know there is a "TEST" I'll see them today and ask WTF..
I pick up a New Throttle Body, and Connecting Pins -
The (5th) FBW is 3 days old - I'll pick under and see if the routing is causing ant biding on the wires..
Good to know there is a "TEST" I'll see them today and ask WTF..
P1511 Power Management: Provides more limitation on
driveability, due to failure of the TCA, without a TGS, MAP
or airflow faults. The TCA is de-energized and the throttle
plate returns to its idle detent position. The ECM monitors
the operation of the TGS and adjusts the spark advance
and cylinder shutoff/rev limiting, allowing the vehicle to
reach traffic speeds (limp-home).
If you are working with teh Dealer, the electrical manual has diagnostics using a breakout box which allows tests to be done while everything is still connected and able to run.
if has a "flow chart" approach with "if this, that that" approach to the checks.
if you can get you hands on one, it makes for good reading and an overview of possible sources of failures.
I am somewhat skeptical that the dealer is just replacing parts rather than diagnosing the fault- and replacing the failed part
this system works well for alot of us.... get to the source of the failure(s)
mike
driveability, due to failure of the TCA, without a TGS, MAP
or airflow faults. The TCA is de-energized and the throttle
plate returns to its idle detent position. The ECM monitors
the operation of the TGS and adjusts the spark advance
and cylinder shutoff/rev limiting, allowing the vehicle to
reach traffic speeds (limp-home).
If you are working with teh Dealer, the electrical manual has diagnostics using a breakout box which allows tests to be done while everything is still connected and able to run.
if has a "flow chart" approach with "if this, that that" approach to the checks.
if you can get you hands on one, it makes for good reading and an overview of possible sources of failures.
I am somewhat skeptical that the dealer is just replacing parts rather than diagnosing the fault- and replacing the failed part
this system works well for alot of us.... get to the source of the failure(s)
mike
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