Update: Still hesitating engine after SERT--Help!!
Outstanding HDF Member
Joined: Jun 2007
Posts: 3,364
Likes: 33
From: So Cal The Golden State
Baloney. As has already been said, a new bike will run smoothly right out of the box with no tuner or dyno tune and without misfiring. If it is running so lean as to make it misfire it is a warranty issue. I would call HD customer service and tell them what the dealer said and what they sold you as a fix. I would demand a refund, as they had no business selling you a bill of goods that they knew should've been handled as a warranty issue.
This is similar to the problems I was having with my '07, but in my case it was the TPS, and its your good fortune that you don't have one. There is a connector on top the induction module of some (all?) TBW bikes that can cause problems like this because of bad contacts. Also, a leak in the corrugated hose inside the tank can cause fuel-pressure problems. Other possibilities might be a defective spark plug or plug wire, but I wouldn't bet any money on either since you aren't getting any fault codes. Clogged gas cap? Maybe, and that should be easy to diagnose.
Again, I would cease talking to that dealer until you call HD CS, and tell them the entire story of how they diagnosed the problem as a $1000 fix that came out of your pocket, which ultimately didn't fix anything. They will probably have a service rep look at the bike and they will go from there. You haven't been given good service, IMO.
This is similar to the problems I was having with my '07, but in my case it was the TPS, and its your good fortune that you don't have one. There is a connector on top the induction module of some (all?) TBW bikes that can cause problems like this because of bad contacts. Also, a leak in the corrugated hose inside the tank can cause fuel-pressure problems. Other possibilities might be a defective spark plug or plug wire, but I wouldn't bet any money on either since you aren't getting any fault codes. Clogged gas cap? Maybe, and that should be easy to diagnose.
Again, I would cease talking to that dealer until you call HD CS, and tell them the entire story of how they diagnosed the problem as a $1000 fix that came out of your pocket, which ultimately didn't fix anything. They will probably have a service rep look at the bike and they will go from there. You haven't been given good service, IMO.
The gas cap thing is real, I had the same issue on one if my bikes.
Take care
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
Took it to Harley today. Warmed up the bike well on the way, and at a stop light in town, it almost died on me.
Well, at least the bike is throwing codes now. The Harley Maintenance Manager said both the front and rear cylinders are misfiring. Plus, they found a small oil cooler leak (most likely unrelated).
The codes found were:
P0134:Front Oxygen sensor inactive
P0154: Rear Oxygen sensor inactive
P0031: O2 sensor heater low/inactive
Any of these related to misfiring?
Well, at least the bike is throwing codes now. The Harley Maintenance Manager said both the front and rear cylinders are misfiring. Plus, they found a small oil cooler leak (most likely unrelated).
The codes found were:
P0134:Front Oxygen sensor inactive
P0154: Rear Oxygen sensor inactive
P0031: O2 sensor heater low/inactive
Any of these related to misfiring?
...while I was there talking to parts guys, the Maint. Manager quit! Walked out.
Thread Starter
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Cruiser
Joined: Jan 2012
Posts: 135
Likes: 0
From: Bristow, VA
iClick,
I bought V&H slip-on mufflers (stock headpipes), and the Harley guys put it on for me. I had those put on in early December, and the problems started in mid-February.
Thanks for all the info...gives me lots of questions to ask if I go to the dealer and they say "couldn't find anything".
Cheers,
Skippy
I bought V&H slip-on mufflers (stock headpipes), and the Harley guys put it on for me. I had those put on in early December, and the problems started in mid-February.
Thanks for all the info...gives me lots of questions to ask if I go to the dealer and they say "couldn't find anything".
Cheers,
Skippy
Thread Starter
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Cruiser
Joined: Jan 2012
Posts: 135
Likes: 0
From: Bristow, VA
Harley is telling me that the ECM needs replacing now.
Parts on order...right in time for the good weather.
Of course, if this is the problem, that means the tune was done on a bad ECM (the problem started before the tune). That means that they will have to do another tune with the new ECM, I'm guessing.
This just gets better and better.
Parts on order...right in time for the good weather.
Of course, if this is the problem, that means the tune was done on a bad ECM (the problem started before the tune). That means that they will have to do another tune with the new ECM, I'm guessing.
This just gets better and better.
Novice
Joined: Mar 2007
Posts: 23
Likes: 0
From: michigan
first thing i would do is disconnect the connector to the ecm put some electrical lube in there an make sure good connection, then i would disconnect the tbw connection on bottom left side on induction module an put some electrical lube in there also. i would rule these two items out of the equation before going any further. theres been a problem with moisture an condensation on the terminals in the past, worth a shot. good luck
Road Warrior
Joined: May 2009
Posts: 1,945
Likes: 4
From: Victoria, Australia
Agreed if the sensors are the issue but--- sometimes a fault will throw a 'spurious' code either as a side issue of the real problem or can be unrelated to the root cause.
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Road Warrior
Joined: May 2009
Posts: 1,945
Likes: 4
From: Victoria, Australia
Harley is telling me that the ECM needs replacing now.
Parts on order...right in time for the good weather.
Of course, if this is the problem, that means the tune was done on a bad ECM (the problem started before the tune). That means that they will have to do another tune with the new ECM, I'm guessing.
This just gets better and better.
Parts on order...right in time for the good weather.
Of course, if this is the problem, that means the tune was done on a bad ECM (the problem started before the tune). That means that they will have to do another tune with the new ECM, I'm guessing.
This just gets better and better.
Don't let them sell you a new dyno tune when all u need is the final map installed. If they say otherwise or have 'lost' the map the dyno tune would be on them IMO as you've already paid for this once....
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