'03 VFR 800 throttle problem - Wrist Twisters
 
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post #1 of 6 Old 04-09-2013, 11:31 AM Thread Starter
Tirone
 
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'03 VFR 800 throttle problem

The bike has 28K on it and a power commander III. When you apply throttle, it will stumble and then surge. It's intermittent. Sometimes it happens right off the bat after starting. Sometimes you can ride it a while and then it'll suddenly start doing it. If you turn it off and let it sit for a moment, it usually seems to reset itself or something and doesn't do it anymore.
Talked to the service center and they can't figure it out.
What do y'all think?

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post #2 of 6 Old 04-09-2013, 11:58 AM
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Try recalibrating your throttle position on the PC3.

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post #3 of 6 Old 04-09-2013, 12:54 PM
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Quote:
Originally Posted by Pvster View Post
Try recalibrating your throttle position on the PC3.
or unplugging the pc3 from the harness to rule that issue out real quick.

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post #4 of 6 Old 04-10-2013, 07:00 AM Thread Starter
Tirone
 
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Quote:
Originally Posted by nd4spdbh View Post
or unplugging the pc3 from the harness to rule that issue out real quick.
I'm not sure I can do that because it doesn't have the stock exhaust on it.


I'll have to look up how to recalibrate the throttle position. I'm not sure what maps or anything that it's using. It came with the bike.

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post #5 of 6 Old 04-10-2013, 09:28 AM
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Your VFR should run ok without the PC3.
I permanently removed the PC3 from my 2001 VFR and did not see any detrimental effects. In fact it seemed to run more lean and the plugs were less black.

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post #6 of 6 Old 04-10-2013, 09:45 AM
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As an additional thought you should make sure that your VFR has had all the recall service done to it. The 2002 thru 2006 model years of the sixth generation VFR had a recall of the wiring harness that should still be done if it was not taken in for repair. Issues relate to charging problems. As a quick check make sure battery is charged and strong then see if voltage is proper at idle and 5000 rpm.
Look at vfrdiscussion.com for very extensive info on this issue and your bike in general.

Regards,
Mark

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