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erratic tach and check engine light

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Old

Sep 16, 2009 | 07:27 AM

#1

mart73

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Joined: Mar 2008

Posts: 38

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From: Central PA

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erratic tach and check engine light

Friend of mine is having trouble with his 02 RK with 35K on it. The engine light started coming on while riding and at the same time the tach would bounce between 0 and 3000 RPM. Engine never missed a beat. No miss or loss of power. There are no error codes showing when he checked them. He changed the plugs thinking it may be a weak spark causing the engine light to come on. Didn't help. Anyone else ever have this problem.

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Old

Sep 16, 2009 | 07:38 AM

#2

n8dc

Stellar HDF Member

Joined: Mar 2007

Posts: 2,034

Likes: 45

From: Michigan

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Mine did that but the security light came on also and I dont have security.. ended up being a faulty TSM .. I also had codes..

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Old

Sep 14, 2023 | 05:22 PM

#3

Justjake

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Joined: Sep 2023

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From: Monticello

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Seeing if you found answers

Quote:

Originally Posted by mart73

Friend of mine is having trouble with his 02 RK with 35K on it. The engine light started coming on while riding and at the same time the tach would bounce between 0 and 3000 RPM. Engine never missed a beat. No miss or loss of power. There are no error codes showing when he checked them. He changed the plugs thinking it may be a weak spark causing the engine light to come on. Didn't help. Anyone else ever have this problem.

I know this is a very old thread but I'm having the same issue I can't find much help on the internet did you ever find a solution

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Old

Sep 14, 2023 | 06:13 PM

#4

Oko

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Joined: Oct 2016

Posts: 4,540

Likes: 5,865

From: Syracuse NY

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Quote:

Originally Posted by Justjake

I know this is a very old thread but I'm having the same issue I can't find much help on the internet did you ever find a solution

According to his profile, the OP hasn’t had any activity since 2015.

Try pm’ing him.

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check, davidson, engine, erratic, harley, light, tach

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