I am out of ideas
#11
05-10-2013 | 01:47 PM
My 08 Dyna was doing the exact same thing. Except my engine light was coming on, and it was throwing historical codes. In the beginning the light wasn't going on, but over a period of a month or so, and as it progressively got worse, the engine light came on and the idle surge began to happen more often.
Not sure if my fix will work for your bike, but it sounds like it might. I bypassed some other reasons this might be happening and installed a new Throttle Position Sensor. I did this just the other day. I rode the bike yesterday for a couple of hours and the problem seems to be solved. No engine light and perfect idle. The Throttle Position Sensor is only a $31 part and other than the back bolt, that's a little tricky to get out, it's pretty easy to replace.
As far as your bike not having fault codes, another guy on here didn't either, but it was the same fix for his bike. For $31, and about an hour of your time, it may be worth a shot.
If you're going to do this and want to know how I got that back bolt out let me know and I'll walk you through it. Do you have a service manual? Make sure you disconnect your battery before you install it.
Not sure if my fix will work for your bike, but it sounds like it might. I bypassed some other reasons this might be happening and installed a new Throttle Position Sensor. I did this just the other day. I rode the bike yesterday for a couple of hours and the problem seems to be solved. No engine light and perfect idle. The Throttle Position Sensor is only a $31 part and other than the back bolt, that's a little tricky to get out, it's pretty easy to replace.
As far as your bike not having fault codes, another guy on here didn't either, but it was the same fix for his bike. For $31, and about an hour of your time, it may be worth a shot.
If you're going to do this and want to know how I got that back bolt out let me know and I'll walk you through it. Do you have a service manual? Make sure you disconnect your battery before you install it.
#13
05-10-2013 | 01:58 PM
Outstanding HDF Member
Joined: Apr 2009
Posts: 3,056
Likes: 250
From: Connecticut
I JUST called the dealership, they told me they would give me a free diagnostic and put in my map for free too. My problem with letting them do it, is I have 16" apes and I am having shoulder surgery Monday morning. The guy told me, "Bro, we will deliver it to your house free of charge when we are done with it!" This dealership has been the best one I have ever dealt with, even though they DID break my axle cover and fry my PCM haha. So I am going to drop it off tonight or tomorrow, depending on when I get off work tonight and see what they think. Thanks for your help guys, I will keep you posted on what the problem was!
As far as the dealership. It's good to see someone is providing good service.
I'm more interested in knowing how things go with the bike than I am about your shoulder. I pretty much already know how the shoulder surgery will go. LOL Still, let us know how both went. Best of luck with both!
#14
05-10-2013 | 02:14 PM
#15
05-10-2013 | 02:47 PM
Outstanding HDF Member
Joined: Apr 2009
Posts: 3,056
Likes: 250
From: Connecticut
#17
05-10-2013 | 04:06 PM
Road Captain
Joined: Jun 2010
Posts: 604
Likes: 22
idle
Did you check for intake leaks. Just spray some silicone or wd-40 around the intake area shielding the aircleaner area with cardboard so as not to pick up the spray. When you spray and the engine changes idle speed or sound you have an intake leak. You really do need a tuner with the exhaust and intake mods but an intake leak will leave you with new holes in the piston or burnt valves pretty quick.
#18
05-10-2013 | 08:20 PM
Outstanding HDF Member
Joined: Apr 2009
Posts: 3,056
Likes: 250
From: Connecticut
#19
05-11-2013 | 08:06 AM
I found a TPS, but the big name companies don't carry it for some damn reason.
I dropped the bike off last night. They are running a diag today and will load the stage 1 if they can get to it. If that doesnt fix it, I am going to order the part. the newer ones are 30-32 dollars but the one for my bike is 58-65 dollars. Older parts are always more expensive for my bike for some reason.
#20
05-11-2013 | 08:22 AM
Outstanding HDF Member
Joined: Apr 2009
Posts: 3,056
Likes: 250
From: Connecticut
Ok, For some reason when you said they don't make a TPS for pre 2006 I was thinking you meant your 2001 didn't have one...which didn't make sense to me at the time. Now I know you were just saying that you couldn't find the part.
That said, I'll go back to my first post and I'll bet $1 it's your TPS.
That said, I'll go back to my first post and I'll bet $1 it's your TPS.