What is this wire?

bw51
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bw51
Edited Date/Time 2/19/2014 10:18pm
I have just had a rebuild done on my 2011 crf250r at my local dealership and after having it in my garage for the past week i decided to take my plastics off and clean where i norm cant get to... while cleaning and tinkering i noticed a wire with a round connector on the end just hanging loose ...after a bit of hunting i realised it plugs into the bottom of my air box... what is it and am i right to plug it in is it a forgetful mistake been made at the dealership not putting it back?
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Outsider
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Outsider 2/18/2014 5:12pm
2/18/2014 5:12pm
Plugging it in starts the timer on the bomb...
RM250racer 2/18/2014 5:30pm
2/18/2014 5:30pm
sounds like a iat sensor. if its even a fuel injected bike. or if dirtbikes even have a iat

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Zesiger 112
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Zesiger 112 2/18/2014 5:34pm
2/18/2014 5:34pm
maybe an air temp sensor for the fuel injection? if that is what it is I doubt it would effect how the bike runs, just in the air box keeps it secure and out of the way
mx836
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mx836 2/18/2014 5:46pm
2/18/2014 5:46pm
Zesiger 112 wrote:
maybe an air temp sensor for the fuel injection? if that is what it is I doubt it would effect how the bike runs, just in...
maybe an air temp sensor for the fuel injection? if that is what it is I doubt it would effect how the bike runs, just in the air box keeps it secure and out of the way
Disconnecting the intake air temp sensor on something won't affect the way it runs??? I beg to differ.
SEE ARE125
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SEE ARE125 2/18/2014 5:49pm
2/18/2014 5:49pm
You talking about #20 on this microfiche? If so, it's the air temp sensor. Just plug it back in.

RM250racer 2/18/2014 5:51pm
2/18/2014 5:51pm
Zesiger 112 wrote:
maybe an air temp sensor for the fuel injection? if that is what it is I doubt it would effect how the bike runs, just in...
maybe an air temp sensor for the fuel injection? if that is what it is I doubt it would effect how the bike runs, just in the air box keeps it secure and out of the way
mx836 wrote:
Disconnecting the intake air temp sensor on something won't affect the way it runs??? I beg to differ.
Computer ignores iat after motors warmed up. Then it uses ect. The only thing itd affect is startup
blusmbl
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blusmbl 2/18/2014 5:54pm
2/18/2014 5:54pm
Zesiger 112 wrote:
maybe an air temp sensor for the fuel injection? if that is what it is I doubt it would effect how the bike runs, just in...
maybe an air temp sensor for the fuel injection? if that is what it is I doubt it would effect how the bike runs, just in the air box keeps it secure and out of the way
mx836 wrote:
Disconnecting the intake air temp sensor on something won't affect the way it runs??? I beg to differ.
RM250racer wrote:
Computer ignores iat after motors warmed up. Then it uses ect. The only thing itd affect is startup
IAT is used for both fuel calculations (it's an input to the speed density calculation) and ignition timing on almost any efi engine.
RM250racer 2/18/2014 6:05pm
2/18/2014 6:05pm
mx836 wrote:
Disconnecting the intake air temp sensor on something won't affect the way it runs??? I beg to differ.
RM250racer wrote:
Computer ignores iat after motors warmed up. Then it uses ect. The only thing itd affect is startup
blusmbl wrote:
IAT is used for both fuel calculations (it's an input to the speed density calculation) and ignition timing on almost any efi engine.
A lot of efi engines (at least for cars) don't even have a iat, just a ect. You might be thinking of a map or maf sensor
blusmbl
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blusmbl 2/18/2014 6:53pm
2/18/2014 6:53pm
RM250racer wrote:
Computer ignores iat after motors warmed up. Then it uses ect. The only thing itd affect is startup
blusmbl wrote:
IAT is used for both fuel calculations (it's an input to the speed density calculation) and ignition timing on almost any efi engine.
RM250racer wrote:
A lot of efi engines (at least for cars) don't even have a iat, just a ect. You might be thinking of a map or maf...
A lot of efi engines (at least for cars) don't even have a iat, just a ect. You might be thinking of a map or maf sensor
I can't think of a single automobile or motorcycle that doesn't measure intake temperature at either the intake manifold or the mass air meter. It really is a critical input to fueling, especially on something like a dirtbike that doesn't use O2 sensor feedback for closed loop fuel control.
gsxr6
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gsxr6 2/18/2014 7:26pm
2/18/2014 7:26pm
blusmbl wrote:
IAT is used for both fuel calculations (it's an input to the speed density calculation) and ignition timing on almost any efi engine.
RM250racer wrote:
A lot of efi engines (at least for cars) don't even have a iat, just a ect. You might be thinking of a map or maf...
A lot of efi engines (at least for cars) don't even have a iat, just a ect. You might be thinking of a map or maf sensor
blusmbl wrote:
I can't think of a single automobile or motorcycle that doesn't measure intake temperature at either the intake manifold or the mass air meter. It really...
I can't think of a single automobile or motorcycle that doesn't measure intake temperature at either the intake manifold or the mass air meter. It really is a critical input to fueling, especially on something like a dirtbike that doesn't use O2 sensor feedback for closed loop fuel control.
I am an auto tech ten years now every efi engine I've ever seen has iat and its critical. On early cars if it was unplugged the computer read that as neg 40 degree air causing tons of fuel smoke and incredibly poor running and mpg. Lol who ever left that unplugged is a dumbass. Also the last thing your high performance four stroke needs is a lost input might even cause it to run so rich the cylinder could wash degrade the engine oil and mix with it to the point it burns the oil and a catastrophic oil failure could result. Real talk BROS
gsxr6
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gsxr6 2/18/2014 7:35pm
2/18/2014 7:35pm Edited Date/Time 2/18/2014 7:40pm
RM250racer wrote:
Computer ignores iat after motors warmed up. Then it uses ect. The only thing itd affect is startup
blusmbl wrote:
IAT is used for both fuel calculations (it's an input to the speed density calculation) and ignition timing on almost any efi engine.
RM250racer wrote:
A lot of efi engines (at least for cars) don't even have a iat, just a ect. You might be thinking of a map or maf...
A lot of efi engines (at least for cars) don't even have a iat, just a ect. You might be thinking of a map or maf sensor
Wrong. Just for a test call our local parts house on any car and ask for a intake air temperature sensor price. Only cars that have one integrated into the mass air flow sensor don't have one separate. Really early efi (think seventies z and Cadillacs and early like 81 82 ford with efi) systems called it the charge air temperature sensor and its the same exact thing. Also anyone who thinks the manufacturer s buy and install these sensors despite them not being needed and important is highly confused and suspect of complete ignorance in regards to the workings of any efi system. Gosh next he's gonna say u only need half your spokes and no front brake. Lmao
rrjr
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rrjr 2/19/2014 1:53am
2/19/2014 1:53am Edited Date/Time 2/19/2014 1:56am
bw51 wrote:
I have just had a rebuild done on my 2011 crf250r at my local dealership and after having it in my garage for the past week...
I have just had a rebuild done on my 2011 crf250r at my local dealership and after having it in my garage for the past week i decided to take my plastics off and clean where i norm cant get to... while cleaning and tinkering i noticed a wire with a round connector on the end just hanging loose ...after a bit of hunting i realised it plugs into the bottom of my air box... what is it and am i right to plug it in is it a forgetful mistake been made at the dealership not putting it back?
I wonder what else the dealer forgot?

I'd leave it just like it is and put your plastic back on.
Then load it up and take it back to the dealer. Ask to speak with the General Manager or Owner. Don't talk to anyone in the service dept.

Show them what their service department's work quality is like. Then tell them if they forgot to connect a important sensor for the efi, your worried they may have forgotten something else that could lead to engine failure while your riding.

No one likes a flame out while hitting a big jump.

Demand(in a nice way) that they give you a warranty for their work.

If they refuse contact Honda of America. They have a whole dept for these kind of things and they won't blow you off like the dealer probably will.
RM250racer 2/19/2014 12:20pm
2/19/2014 12:20pm
gsxr6 wrote:
Wrong. Just for a test call our local parts house on any car and ask for a intake air temperature sensor price. Only cars that have...
Wrong. Just for a test call our local parts house on any car and ask for a intake air temperature sensor price. Only cars that have one integrated into the mass air flow sensor don't have one separate. Really early efi (think seventies z and Cadillacs and early like 81 82 ford with efi) systems called it the charge air temperature sensor and its the same exact thing. Also anyone who thinks the manufacturer s buy and install these sensors despite them not being needed and important is highly confused and suspect of complete ignorance in regards to the workings of any efi system. Gosh next he's gonna say u only need half your spokes and no front brake. Lmao
Bro, less spokes = less rotating weight, and no body uses front brake anyway. I was taught iat is useless after motor is warmed up. I'm obviously wrong though. I learn on this site even when I'm not trying to lmao.
Tracktor
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Tracktor 2/19/2014 12:24pm
2/19/2014 12:24pm
bw51 wrote:
I have just had a rebuild done on my 2011 crf250r at my local dealership and after having it in my garage for the past week...
I have just had a rebuild done on my 2011 crf250r at my local dealership and after having it in my garage for the past week i decided to take my plastics off and clean where i norm cant get to... while cleaning and tinkering i noticed a wire with a round connector on the end just hanging loose ...after a bit of hunting i realised it plugs into the bottom of my air box... what is it and am i right to plug it in is it a forgetful mistake been made at the dealership not putting it back?
rrjr wrote:
I wonder what else the dealer forgot? I'd leave it just like it is and put your plastic back on. Then load it up and take...
I wonder what else the dealer forgot?

I'd leave it just like it is and put your plastic back on.
Then load it up and take it back to the dealer. Ask to speak with the General Manager or Owner. Don't talk to anyone in the service dept.

Show them what their service department's work quality is like. Then tell them if they forgot to connect a important sensor for the efi, your worried they may have forgotten something else that could lead to engine failure while your riding.

No one likes a flame out while hitting a big jump.

Demand(in a nice way) that they give you a warranty for their work.

If they refuse contact Honda of America. They have a whole dept for these kind of things and they won't blow you off like the dealer probably will.
It's an unplugged wire..............Simmer down there, chief.........................

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Ryno23
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Ryno23 2/19/2014 1:54pm
2/19/2014 1:54pm
gsxr6 is right. But i've been a tech for +20 years now so he probably don't know shit about carburetors or vacuum advance stuff. lol.
gsxr6
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gsxr6 2/19/2014 2:04pm
2/19/2014 2:04pm
Ryno23 wrote:
gsxr6 is right. But i've been a tech for +20 years now so he probably don't know shit about carburetors or vacuum advance stuff. lol.
True. I don't really like car carburetors. The ones on bikes and quads are a breeze though. Lol
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Ryno23 2/19/2014 2:08pm
2/19/2014 2:08pm
gsxr6 wrote:
True. I don't really like car carburetors. The ones on bikes and quads are a breeze though. Lol
Ha, I don't care much for carbs on vehicles anymore either. EFI stuff is much easier to work on. But being the OG at my shop I get to answer all the questions for the youngsters about "how the hell does this thing work?"
gsxr6
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gsxr6 2/19/2014 4:06pm
2/19/2014 4:06pm
Every time I've ever seen points I replaced that junk with a digital pickup. Lol still haven't ever adjusted any. I've fixed several carb headaches for people in the past and I can tune them great for driveability but I prefer efi. Way less maintenance.
blusmbl
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blusmbl 2/19/2014 4:55pm
2/19/2014 4:55pm
I calibrate EFI for a living, but my shitbox '66 Pontiac still has points and a carb. LOL.
rrjr
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rrjr 2/19/2014 10:18pm
2/19/2014 10:18pm
bw51 wrote:
I have just had a rebuild done on my 2011 crf250r at my local dealership and after having it in my garage for the past week...
I have just had a rebuild done on my 2011 crf250r at my local dealership and after having it in my garage for the past week i decided to take my plastics off and clean where i norm cant get to... while cleaning and tinkering i noticed a wire with a round connector on the end just hanging loose ...after a bit of hunting i realised it plugs into the bottom of my air box... what is it and am i right to plug it in is it a forgetful mistake been made at the dealership not putting it back?
rrjr wrote:
I wonder what else the dealer forgot? I'd leave it just like it is and put your plastic back on. Then load it up and take...
I wonder what else the dealer forgot?

I'd leave it just like it is and put your plastic back on.
Then load it up and take it back to the dealer. Ask to speak with the General Manager or Owner. Don't talk to anyone in the service dept.

Show them what their service department's work quality is like. Then tell them if they forgot to connect a important sensor for the efi, your worried they may have forgotten something else that could lead to engine failure while your riding.

No one likes a flame out while hitting a big jump.

Demand(in a nice way) that they give you a warranty for their work.

If they refuse contact Honda of America. They have a whole dept for these kind of things and they won't blow you off like the dealer probably will.
Tracktor wrote:
It's an unplugged wire..............Simmer down there, chief.........................
Unplugged wire here, clutch plates put in backwards there. Wrong gasket here, missing part there. If the dealer screwed up on a simple thing like connecting a wire, I would be very concerned that they screwed up on something else.

When you pay a dealer as much money as the Op probably did, you expect to have the job done correctly down to the last wire.

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