MAP sensor failure?
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Road Master
Joined: Oct 2007
Posts: 894
Likes: 3
From: Wyalusing, PA
MAP sensor failure?
2004 FLHRCI with SERT...Was experiencing some sputtering and engine light under heavy throttle going uphill...last weekend dealer replaced the MAP sensor. Got about 40 miles down the road, sat in pretty warm conditions while a paving crew held up traffic...took off and it sputtered out and pretty much died. Got it going again and now have the same symptoms...sputtering/missing and check engine light under heacy throttle going uphill.
If I were to assume that the MAP sensor was bad again, what might cause such a thing?
If I were to assume that the MAP sensor was bad again, what might cause such a thing?
Tourer
Joined: Feb 2009
Posts: 404
Likes: 0
From: L.A. (Lower Alabama)
What are the codes? Your year model had some with badly drilled throttle shafts. They broke on the aft side at the screw, so throttle inputs worked but were improperly transmitted to the TPS. It gives your symptoms. Mine did it. Pull the air cleaner and have a look.
Thread Starter
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Road Master
Joined: Oct 2007
Posts: 894
Likes: 3
From: Wyalusing, PA
Thanks for the tip Oldbiker. I'm going to call the service manager and ask him about the possibility of the "shaft issue", lest I become the victim of a different kind of "shaft issue"!!!
As far as the codes, I can't get my laptop to communicate with the SERT. Maybe because the software wasn't made to be supported by Vista? Maybe it doesn't like the $41 USB-Serial port cable I bought?
As far as the codes, I can't get my laptop to communicate with the SERT. Maybe because the software wasn't made to be supported by Vista? Maybe it doesn't like the $41 USB-Serial port cable I bought?
Outstanding HDF Member
Joined: Feb 2009
Posts: 2,005
Likes: 53
From: ID Ho
2004 FLHRCI with SERT...Was experiencing some sputtering and engine light under heavy throttle going uphill...last weekend dealer replaced the MAP sensor. Got about 40 miles down the road, sat in pretty warm conditions while a paving crew held up traffic...took off and it sputtered out and pretty much died. Got it going again and now have the same symptoms...sputtering/missing and check engine light under heacy throttle going uphill.
If I were to assume that the MAP sensor was bad again, what might cause such a thing?
If I were to assume that the MAP sensor was bad again, what might cause such a thing?
Its a simple vacuum switch, they dont go bad very often, usually its the wiring NOT the sensor.
Vista systems are picky about USB/Serial cables. We have 3 different cables and only one works on the comp at work.
Seasoned HDF Member
Joined: Dec 2005
Posts: 5,452
Likes: 596
Thanks for the tip Oldbiker. I'm going to call the service manager and ask him about the possibility of the "shaft issue", lest I become the victim of a different kind of "shaft issue"!!!
As far as the codes, I can't get my laptop to communicate with the SERT. Maybe because the software wasn't made to be supported by Vista? Maybe it doesn't like the $41 USB-Serial port cable I bought?
As far as the codes, I can't get my laptop to communicate with the SERT. Maybe because the software wasn't made to be supported by Vista? Maybe it doesn't like the $41 USB-Serial port cable I bought?
Zach
Cruiser
Joined: May 2007
Posts: 211
Likes: 1
From: Fairhope, AL
You don't need the SERT to check for codes. The codes are displayed on your odometer. Check your owners manual for the procedure, but iirc you hold down the trip reset button while turning the ignition switch on. Then you can cycle through the different system by pushing the trip reset.
Zach
Zach
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Road Master
Joined: Oct 2007
Posts: 894
Likes: 3
From: Wyalusing, PA
Thanks guys. You know, it's not that I think the dealer is taking me for a ride, but I like to be at least as informed as the guy working on my bike!!!
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Thread Starter
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Road Master
Joined: Oct 2007
Posts: 894
Likes: 3
From: Wyalusing, PA
I'll put a piece of electrical tape over the speedo so I don't see when the light comes on! That's fixed enough isn't it?