2007 R6 Idling Issue - Yamaha R6 Forum: YZF-R6 Forums
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post #1 of 19 (permalink) Old 07-13-2018, 07:06 AM Thread Starter
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2007 R6 Idling Issue

I have a 2007 R6 that has been having an idling issue. It runs ok until it warms up but after that, it idles rough, surges when starting from an idle, and will stall when starting from a stop unless I rev it up high. I have already replaced ignition coils with aftermarket coils and replaced plugs with Iridium plugs. I'm thinking it may be the TPS sensor but I'm not sure and I would prefer to not have to take it to a mechanic. Any help would be greatly appreciated.
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post #2 of 19 (permalink) Old 07-13-2018, 07:36 AM
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Re: 2007 R6 Idling Issue

First off, you should only use new OEM coils. And iridium plugs are a waste of money imo.

But some info is missing here, like how many miles and is the bike stock?

Air filter clean?

You can get the service manual from r6messagent (google search). In there you will find out how to use the diagnostic menu.
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post #3 of 19 (permalink) Old 07-13-2018, 07:39 AM Thread Starter
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Re: 2007 R6 Idling Issue

The bike is stock besides a K&N air filter. It has 26500 miles on it.
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post #4 of 19 (permalink) Old 07-13-2018, 07:40 AM Thread Starter
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Re: 2007 R6 Idling Issue

Sorry forgot. It has a KN air filter and a GYTR slip on
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post #5 of 19 (permalink) Old 07-13-2018, 08:38 AM
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Re: 2007 R6 Idling Issue

Have the valve clearances been checked? Your at that point mileage wise.
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post #6 of 19 (permalink) Old 07-13-2018, 08:46 AM Thread Starter
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Re: 2007 R6 Idling Issue

I haven't had them done yet but I'm trying to rule out anything else before then. My local shop said they couldn't get around to it for at least a month.
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post #7 of 19 (permalink) Old 07-13-2018, 02:44 PM
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Re: 2007 R6 Idling Issue

Check d01 d13 d14 and d15 in the diag menu , compare the reading with the service manual from there you will have a idea if itís a issue with anything throttle body related .. also is it only a slip on not a full exhaust. I hope this helps


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post #8 of 19 (permalink) Old 07-13-2018, 04:11 PM
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Re: 2007 R6 Idling Issue

You said it had a slip-on, but has the under engine muffler/cat box been removed? Have the headers been gutted (honeycomb cats in the headers removed?

Those mods are known to cause bouncing idling. And they definitely make a Fuel controller or ECU flash recommended


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post #9 of 19 (permalink) Old 07-13-2018, 04:43 PM Thread Starter
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Re: 2007 R6 Idling Issue

The previous owner installed the slip on. The cat box is still there and I doubt any other exhaust work was done. All the diag codes are coming back to spec with the manual.
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post #10 of 19 (permalink) Old 07-14-2018, 03:03 AM
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Quote:
Originally Posted by jdman201 View Post
The previous owner installed the slip on. The cat box is still there and I doubt any other exhaust work was done. All the diag codes are coming back to spec with the manual.
I would clean your TPS, and see if that makes a difference.
The surge really sounds like TPS to me.

Question though: Have you checked your throttle mechanism to see if the cables are fine and not frayed or broken? How about the throttle pulley next to the engine where th Lee cables end. Is it stuck, frozen? I had a similar problem that turned out that the pulley attached to the engine was actually damaged by a previous owner during a crash. They told me about the idling and power problems, but didn’t tell me why. Just a thought.

You can get a set of security torx bits and some electric cleaner and clean the TPS for decently cheap. It also could just be malaigned and need to be adjusted to spec. I know you said the reading was within spec, but the cleaning is an easy thing to do and is relatively cheap.

Could also be valves though. If it’s that, there’s not much I can tell ya other than to seek professional mechanical help. ☹️
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