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P1000 Code 29 High Idle issue

bluedog69

New Member
Sep 18, 2019
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NW Missouri
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So my 2018( less than one year old bought in Sept 2019) has started to have a revving up and down issue(once or twice) and now it is a consistent high idle issue.
It will start up fine when cold and run hours with no problem. Shut it off and try to restart it hot and it idles about 2100 rpm and it throws code 29. Let it cool and it restarts fine. Still under warranty but July 11th is appointment to get it in, and then they said it may be weeks after that to get parts.(covid shipping?)

Is this located on the passenger side of the intake? Need to remove back of front seat to get to it? Somewhere I watched a video of a guy using plastic safe and electronic safe spray to clean out the IACV. Anyone done this?

Any help is appreciated. I could wait for dealer, but use this thing daily on the farm.
 
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Hondasxs

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Feb 13, 2013
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The IACV controls idle and auto choke.

The IACV connector has been known to have a broken wire simular to the injector issue. You won't be able to see the break. If it is broke. It will be right at the head of the connector inside the insulation.
Also. The IACV could just need cleaning.
 

BigOL3

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Oct 27, 2017
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Deep in the heart of Dixie, Kentwood, La.
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The IACV controls idle and auto choke.

The IACV connector has been known to have a broken wire simular to the injector issue. You won't be able to see the break. If it is broke. It will be right at the head of the connector inside the insulation.
Also. The IACV could just need cleaning.
Can you advise where the IACV is located?
 
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bluedog69

New Member
Sep 18, 2019
6
0
1
NW Missouri
Ownership

1000-5
Sooo, yesterday I was using it to check cows and fence. It started up fine while it was cold and then after running for about an hour it threw a code 29 but the idle never changed from normal. Went home and parked it and trailered it 30 miles to check cows.

Started up fine drove it 10 minutes and shut it off. Started it up with a high idle code 29 flashing. Shut it off and thought what the heck I am going to try to start it as fast as I can humanly can. So I immediately went from off to cranking as fast as I could move the key. Surprise! Perfect idle and no code. I repeated this 4 to 5 more times(fast starting while hot). Worked every time.

Tonight I took a buddy to check crops. After about 15 minutes of riding I shut it off and started it slow(let it say hello honda etc). Got a fast idle and a code 29. Shut it off. Waited three seconds and did a lightning startup... normal idle and no check engine light. One more slow start up and got a fast idle and light came on. Immediately shut it off and started it fast again and normal idle and no light.

Will keep experimenting. If I get time I will maybe try to clean IACV. If it keeps being predictable I can't see it being broken wiring???
 
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