Hey all, my 06 Electra Glide Standard started coughing and sometimes dies on cold takeoff. Started some time back, and I assumed it was just the cold Harley thing. Now it does it every time I do a cold takeoff, and also on warm takeoffs. Plus it has started cutting out-stumbling at at various speeds. Already done a lot of online research and am leaning towards TPS or IAC sensor or maybe a intake leak. Any input previous experience would be greatly appreciated.

 

No help here, just a quick bump. A friend of mine is having the exact same issue. Bike is at the shop right now 2003 100A fat boy mostly stock (v&h long shots)
I'll post back when I know any details.

 

Certainly I'm no whiz but if you have a Power Commander, unplug it and see if that helps.

 

Maybe this doesn't apply to your bike but there was a service bulletin in 2006 on the fuel injectors on some of the 06 big twins. It had to do with cold starts and driveability issues. They recommended changing from the 8 degree injectors to the 25 degree injectors. I started having similar issues on my 06 Softail when I built up the motor. Ran fine stock but when I installed the 97" kit, Cams, D&D Low Cat, worked the heads and installed a Thundermax it would bearly run. played with it for a month before I stumbled on a thread somewhere about the injector service bulletin. Change them out and the bike runs like a raped ape.
The Service bulletin number is M-1185. It wasnt on all 06 Big Twins. My sons RK had the 25 degree injsector Softail had the 8
Here it is:
M-1185 1 of 2
SERVICE BULLETIN
M-1185 February 20, 2006
FUEL INJECTOR/CALIBRATION CHANGES FOR 2006 1450cc
BIG TWINS
®
Purpose
It has recently been determined that the 8
°
angle cone spray
fuel injectors used on 2006 1450cc Big Twins may cause cold
start and/or driveability problems on some motorcycles.
In the interest of promoting customer satisfaction, the 25
°
angle cone spray fuel injectors used on CVO 103 cu. in.
(1690cc) motors will be installed on all production Big Twins
beginning on or around February 13, 2006.
Additionally, Harley-Davidson will provide for the installation
of 25
°
angle cone spray fuel injectors on those motorcycles
where use of the 8
°
fuel injectors (part number 27625-06) is
determined to be directly responsible for cold start and/or
driveability problems. See REQUIRED DEALER ACTION.
NOTE
Due to changes in the manufacturing process, the part number
of the 25
°
angle cone spray fuel injector is changing from
27709-06 to 27709-06A. This fuel injector also will be
stamped with the words “25 DEG” for easy identification. See
Figure 1.
Motorcycles Affected
Only 2006 1450cc Big Twin model motorcycles that exhibit
cold start and/or driveability problems directly related to use
of 8
°
angle cone spray fuel injectors (including those subsequently
equipped with P&A Screamin’ Eagle 1450cc or
1550cc Performance Kits).
Required Dealer Action
1. Adhere to the flow chart in Figure 2 when handling customer
complaints regarding cold start and/or driveability
problems on affected motorcycles.
2. If the flow chart indicates that the fuel injectors are the
source of the problem, check the part numbers stamped
on the fuel injectors. While standing on the left side of
the motorcycle, the part number on the rear fuel injector
can be easily read with the aid of a flashlight.
3. If required, remove both 8
°
angle cone spray fuel injectors
following the procedure in the applicable 2006 Service
Manual. Install 25
°
fuel injectors, either part number
27709-06 or 27709-06A.
Figure 1. Fuel Injector Part Numbers
f2447x8x
Old Style 8°
Fuel Injector
New Style 25°
Fuel Injector
NOZZLE END
IMPORTANT NOTE
In the interest of preserving customer safety and satisfaction, always check for outstanding recalls whenever any motorcycle is brought into your
dealership for either maintenance or service.
©2006 HARLEY-DAVIDSON MOTOR COMPANY
ROUTING SERVICE
MANAGER
SALES
MANAGER
PARTS
MANAGER
LEAD
TECHNICIAN
TECHNICIAN
NO.1
TECHNICIAN
NO. 2
TECHNICIAN
NO. 3
TECHNICIAN
NO. 4
RETURN
THIS TO
INITIAL HERE
M-1185 2 of 2
NOTE
Always replace both 8
°
angle cone spray fuel injectors on
affected motorcycles. Never mix 8
°
and 25
°
fuel injectors on
the same motorcycle.
NOTE
If the part numbers on the fuel injectors are rubbed off or otherwise
unreadable, count the number of orifices or holes in
the injector nozzle. The 8
°
angle cone spray fuel injector has
just three holes, while the 25
°
has six. See NOZZLE END in
Figure 1.
4. Update the ECM calibration. For those motorcycles
equipped with P&A Screamin’ Eagle 1450cc or 1550cc
Performance Kits, refer to h-dnet.com for the correct calibration
P/N.
Credit Procedure
Complete a separate warranty claim for each vehicle
serviced. Reference Service Bulletin M-1185 in the
“Comments” or “Notes” section and be sure to include the VIN
of the vehicle on which the service was performed. Fill in the
rest of the claim as follows:
Performance calibrations require pre-authorization from Technical
Service to be considered for warranty coverage unless
listed on the SWR.
Upon receipt of the properly completed claim, you will receive
the labor credit shown above.
Figure 2. Cold Start/Driveability Flow Chart
Correct condition or install
compatible components.
Are cold start or driveability
problems still evident?
Check the following:
● Fuel has the recommended octane rating and is not
contaminated.
● IAC operation.
● Spark plug condition.
● Engine is configured correctly (with the appropriate air
cleaner and exhaust).
● Vehicle configuration is supported by the correct
calibration. Refer to Calibration Information on h-dnet.com.
Does the vehicle pass inspection?
YES NO
Check fuel pressure. Is
fuel pressure between
58-62 psi?
YES NO
Replace the 8° fuel
injectors with 25°
fuel injectors.
Update ECM
calibration.
Check part numbers
stamped on fuel injectors.
Are 8° or 25° angle cone spray
fuel injectors installed?
8° 25°
Refer to SYMPTOMS
DIAGNOSTIC in
Digital Technician.
Problem
resolved.
YES NO
5388
Applicable DT Code
Refer to SYMPTOMS
DIAGNOSTIC in
Digital Technician.
Applicable DT Code
ENTRY FIELD ENTER
Claim Type PRD, MC
Problem Part No. 27625-06
Detail Part No. 27709-06 or 27709-06A
Quantity of Detail Part No. 2
Description 25
°
Angle
Cone
Spray
Fuel Injectors
Labor Code 5388
Time 1.10 Hours
Customer Concern Code 9203
Condition Code 5388

Good luck

 

Have you tried running a tank SeaFoam through it?

 

My TPS went out this summer but it set P0122 in the ECM.

 

We've got an '06 that stumbles around 3.000. put the pressure gauge on it and sure enough pressure drops. New fuel pump assembly on the way.

 

I see you're cams are Andrews 21's. My 06EG started coughing when rolling on the throttle after I installed the same cams. Even did it after it was tuned. Changed the injectors to 25degree and retuned. Runs like a champ now. Don't know if your issue is similar to mine-just sharing my story.

That stumble when rolling on the throttle can get exciting-like when loading it on a trailer, taking off around a corner, etc. I nearly dumped mine a few times before we figured it out.

I'd recommend replacing the injectors if yous are the 8degree type.

 

There's a piece of fuel line inside your tank that's the high pressure (discharge) side of the fuel pump. If it develops a leak you can't see it. In my case, it would idle ok, but any throttle load would cause it to stumble since it wasn't providing enough fuel. It threw no codes. Turn your ignition switch to run. The pump should power up and build pressure, then switch itself off. If it comes on again after it has switched itself off I'd check the hose, but you have to pull the pump to do so. Btw I have 21's too and no stumble issues associated with them.

 

First step: check for trouble codes before throwing parts at it

http://www.fuelmotousa.com/p-29661-h...ble-codes.html