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ECM/Fuel Management systems ECM/Fuel Management systems For Road Glides

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post #1 of 22 (permalink) Old 03-27-2014, 03:47 PM Thread Starter
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Hard starting rg

I have a 02 rg with 95" kit ,gear driven cams, thunderheader and s.e. race tuner
Recently became very hard to start , turning over good , batt. Good . It just keeps chugging and backfiring through breather and pipe , acts like not enough spark, can smell fuel when backfiring so it seems to be getting plenty of that. Did basic test of coil came out good , does this hot or cold starting . ECM? , any feedback appreciated. Good starter ,batt. And reg. stator checks out good. Thnx all
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post #2 of 22 (permalink) Old 03-27-2014, 04:11 PM
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I'm not familiar with the SE race tuner, but is it possible to reset it? I have a Thundermax and any disruption to the electrical system requires me to initialize the map again to the bike.

I would also check for a blown fuse, and also disconnect the ECM and put dielectric grease on the connection. Could just be moisture from sitting.

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post #3 of 22 (permalink) Old 03-27-2014, 06:08 PM
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Of course you have pulled the plugs? make sure the ceramic isn't cracked and gaped correctly, ohm the wires too
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post #4 of 22 (permalink) Old 03-27-2014, 07:38 PM Thread Starter
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Yes new plugs and wires ohmed out good, unplugged ECM, dis conned batt. I'm out of ideas, sometimes it fires right up , then next time it almost kills batt. I guess I'm gonna have to put in for diags., I also checked for codes on the speedo self diag. Check , all we're clear , frustrating I hate puttin in the shop, thanks for all the ideas!
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post #5 of 22 (permalink) Old 03-27-2014, 10:21 PM
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I had the exact same issue and got many of the same replies. At the end of the day it turned out to be my compensator even though it wasn't typical symptoms. Issue completely gone now

Alan
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post #6 of 22 (permalink) Old 03-27-2014, 10:31 PM
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EFI or Carb?

2012 fltrx
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post #7 of 22 (permalink) Old 03-27-2014, 11:19 PM
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First, pull the ECM fuse for 30 minutes or so to reset things, helps a surprising number of issues.

Head temp sensor is worth adding to the list of things to check, especially since it's a cold start issue.
The other one is the crank sensor, they've been known to get flaky and signal sometimes and not others, being an '02 makes it even more likely.

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post #8 of 22 (permalink) Old 03-28-2014, 06:15 AM Thread Starter
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post #9 of 22 (permalink) Old 03-28-2014, 09:28 AM
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Possibly need a new heavy duty starter?

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post #10 of 22 (permalink) Old 03-28-2014, 11:04 AM
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Quote:
Originally Posted by Perlinal View Post
I had the exact same issue and got many of the same replies. At the end of the day it turned out to be my compensator even though it wasn't typical symptoms. Issue completely gone now
First thing I though of when said backfiring through AC.. or possible Crank position sensor..

2010 FLTRX - Stage 4 SE 113 - MVA Heads, 10.5:1, SE266E cams, 58mm TB, 5.3 gr/s injectors, Polished and plated motor and trans and a few chrome extras. Fullsac DX Header and Freedom Performance Classic 4" Slip-ons. Titan II 6.5 speakers with RF PBR300x2, Monroe Airshocks
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