losing power

irontwill · Jun 17th, 2008, 01:03 PM

Can someone help me? I have a 99 flhtpi with a big bore stage one kit, sampson pipes with no baffles and a power commander. When I am at low speed my rpm's drop and the bike starts to die. I changed the intake manifold gaskets and still have the same problem. I took it in to have the codes read and they said nothing was showing. My plugs are clean. Is there something I am missing?

Doc 1 · Jun 17th, 2008, 03:46 PM

Quote:

Originally Posted by irontwill

Can someone help me? I have a 99 flhtpi with a big bore stage one kit, sampson pipes with no baffles and a power commander. When I am at low speed my rpm's drop and the bike starts to die. I changed the intake manifold gaskets and still have the same problem. I took it in to have the codes read and they said nothing was showing. My plugs are clean. Is there something I am missing?

The MM EFI systems has it's share of hot and cold idle problems but running without baffles really hurt the lower rpm area so I would start by installing the baffles back in the pipes to see if the problem goes away.

irontwill · Jun 17th, 2008, 05:21 PM

This problem started before I removed the baffles.

glider · Jun 17th, 2008, 05:24 PM

Try disconnecting the PC III and see if it still does it. There's been a lot of bad PC's around.

Put the baffles back in like Doc suggested, it'll run better.

Also see if this helps you out with the idle.

Irratic Idle Speed On Morelli Bikes - Harley Davidson Community

Did you notice the little guy below?

Lots of good stuff in there for the reading.

irontwill · Jun 17th, 2008, 06:14 PM

Thank's for the info,I will put the baffles back on and give it a shot.

Jun 17th, 2008, 01:03 PM	#1 (permalink)
irontwill New Family Ride: 1999 flhtpi Join Date: Jun 17th, 2008 Posts: 3	losing power Can someone help me? I have a 99 flhtpi with a big bore stage one kit, sampson pipes with no baffles and a power commander. When I am at low speed my rpm's drop and the bike starts to die. I changed the intake manifold gaskets and still have the same problem. I took it in to have the codes read and they said nothing was showing. My plugs are clean. Is there something I am missing?

Jun 17th, 2008, 05:21 PM	#3 (permalink)
irontwill New Family Ride: 1999 flhtpi Join Date: Jun 17th, 2008 Posts: 3	Re: losing power This problem started before I removed the baffles.

Jun 17th, 2008, 05:24 PM	#4 (permalink)
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 11,621 My Mood:	Re: losing power Try disconnecting the PC III and see if it still does it. There's been a lot of bad PC's around. Put the baffles back in like Doc suggested, it'll run better. Also see if this helps you out with the idle. Irratic Idle Speed On Morelli Bikes - Harley Davidson Community Did you notice the little guy below? Lots of good stuff in there for the reading. __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me!

Jun 17th, 2008, 06:14 PM	#5 (permalink)
irontwill New Family Ride: 1999 flhtpi Join Date: Jun 17th, 2008 Posts: 3	Re: losing power Thank's for the info,I will put the baffles back on and give it a shot.

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losing power

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