TRX 450 Red Warning Light?

Wyo_Dude · 07-17-2010, 08:31 PM

I just bought a 2007 TRX 450 today. After getting it home and riding it around for an hour or so, the red warning light next to the green neutral light is staying on. I hope it is some thing minor. It didn't have the manual with it so I don't know what might be causing this. I was wondering if maybe the oil was low or some other easy fix. Any information would be great.

hondaman01 · 07-17-2010, 08:35 PM

that is the oil temp light, it means your oil is getting to hot check to make sure your fan is coming on

riding them around slow will cause them to get hot long before riding it hard will

Wyo_Dude · 07-17-2010, 08:44 PM

The light never came on while I was riding even though I was riding pretty easy, (I got lucky there Ha-ha). It has been sitting for a couple of hours and now when I start it the red light stays on. Is there another fan besides the radiator fan?

Baileygunns · 07-17-2010, 08:46 PM

How long does it stay on?

It will stay on for a few seconds after the bike starts... Just like the dummy lights in a car or truck...

Wyo_Dude · 07-17-2010, 08:57 PM

I just let it run for about a minute and it never went off. The oil level is half full in the glass sight. Should it be full? I see the H and L marks on the case next to the oil sight but I assume that it is like most other bikes. You want the oil to fill the glass oil sight about half way?

D Bergstrom · 07-18-2010, 12:27 AM

That light is not the oil temp light, it is the coolant temp light. If it comes on while riding, it usually means the quad is overheating. The fan should also be on. If the quad is overheating, then you should shut it off when the light comes on. Check coolant level and see that the radiator is full.

Now from what you say, the quad may not be overheating. If the quad sits for a couple of hours and then you start it, does the light stay on? If so, the temp sensor could be bad and may need to be replaced. If the sensor is good, it could be a wiring problem, need to check over the harness.

Doug

hondaman01 · 07-18-2010, 12:50 AM

Quote:

That light is not the oil temp light, it is the coolant temp light. If it comes on while riding, it usually means the quad is overheating. The fan should also be on. If the quad is overheating, then you should shut it off when the light comes on. Check coolant level and see that the radiator is full.

Now from what you say, the quad may not be overheating. If the quad sits for a couple of hours and then you start it, does the light stay on? If so, the temp sensor could be bad and may need to be replaced. If the sensor is good, it could be a wiring problem, need to check over the harness.

Doug[/b]

now i feel like a idiot, of course its a coolant temp light its sensor is in with the thermostat lol

Wyo_Dude · 07-18-2010, 12:52 AM

Coolant is full, oil on both sides are at proper levels, and the fan is spinning fine. I was thinking something in the wiring is gone bad. I guess replacing the sensor is the only way to tell if it is bad? It seems fine but that light just will not turn off. I just got it today and it is making me really worried. I got a pretty good deal on the Quad at 2,450.00. It is an 07 ER in great shape. He in my area they are selling for about 3500-4000. I am hoping to flip it and make a couple hundred bucks. If I have to start fixing stuff that won't work. I really hope it is simple. The rear brake light has been removed. Would that mess up other things in the electrical system?

joeronomo · 07-18-2010, 11:24 PM

No the break light has no effect on it. I would have to agree with the previous post and say its a sensor if your fan is working correctly and it is on even when its cold. I have seen a thermostat stick and cause machines overheat but I don't think this is the issue in your case.

gwhunter350 · 07-18-2010, 11:31 PM

Does the green light come on when its in neutral?

You let it run for just a min shut it down and you didnt see it turn off in that time? try a little longer i know mine stays on for a little bit and then goes off

Where are you located?

cheapfast450r · 07-19-2010, 08:24 AM

unplug the sensor, does the light go out? if not then the wire is cut or shorted to the frame. if it goes out it's the sensor bad.

Wyo_Dude · 07-19-2010, 12:21 PM

Quote:

Does the green light come on when its in neutral?

You let it run for just a min shut it down and you didnt see it turn off in that time? try a little longer i know mine stays on for a little bit and then goes off

Where are you located?[/b]

I am located in Western Wyoming about 75 Miles South of Jackson Hole.

Wyo_Dude · 07-19-2010, 12:23 PM

Quote:

unplug the sensor, does the light go out? if not then the wire is cut or shorted to the frame. if it goes out it's the sensor bad.[/b]

Where do I find the sensor plug??

oregonsandrat · 07-19-2010, 01:27 PM

See if the light goes out when you put it into gear. If so I bet that the lights got switched around. If not the sensor is on the thermostat housing on the head, it's just a spade clip.

gwhunter350 · 07-19-2010, 01:29 PM

Quote:

See if the light goes out when you put it into gear. If so I bet that the lights got switched around. If not the sensor is on the thermostat housing on the head, it's just a spade clip.[/b]

thats what I was getting at... but he didnt answer the question

07-18-2010, 12:27 AM	#6 (permalink)
D Bergstrom Desert Racer Join Date: Nov 2004 Location: Las Vegas, NV Posts: 2,060	That light is not the oil temp light, it is the coolant temp light. If it comes on while riding, it usually means the quad is overheating. The fan should also be on. If the quad is overheating, then you should shut it off when the light comes on. Check coolant level and see that the radiator is full. Now from what you say, the quad may not be overheating. If the quad sits for a couple of hours and then you start it, does the light stay on? If so, the temp sensor could be bad and may need to be replaced. If the sensor is good, it could be a wiring problem, need to check over the harness. Doug __________________ 2004 TRX450R, 2008 TRX700XX (BITD #639 Quad Ironman Expert) 2013 sponsors: Teixeiratech.com, Motowoz.com, Dirttricks.com, Snailmotorsports.com, My bank account. 2008 TRX700XX 2005 TRX450R 1986 TRX250R

07-18-2010, 11:24 PM	#9 (permalink)
joeronomo 250EX Rider Join Date: Mar 2009 Location: unionville, missouri Posts: 345	No the break light has no effect on it. I would have to agree with the previous post and say its a sensor if your fan is working correctly and it is on even when its cold. I have seen a thermostat stick and cause machines overheat but I don't think this is the issue in your case. __________________ 06 450r sb/ss Cp 13.5 dasa classic exhaust green wire mod Web 208 rbc crf headgasket re +1 Gen 1 head Cr500 springs Re taper bored carb +2 arms Lonstar axle Propegs Fly fat bars One graphics TO MUCH IS NEVER ENOUGH!

07-18-2010, 11:31 PM	#10 (permalink)
gwhunter350 400EX Rider Join Date: Feb 2009 Location: Maryland Posts: 1,136	Does the green light come on when its in neutral? You let it run for just a min shut it down and you didnt see it turn off in that time? try a little longer i know mine stays on for a little bit and then goes off Where are you located? __________________ 2006 TRX450ER Black Glued On Racing # 89 HRC kit Bill Ballance Carbon HMF GTT Suspension HD USA +2 A Arms GForce +4 Axle Hiper Tech3s / Maxxis Tires Lonestar +1 Antivibe stem FCI Intake Kit CCP Stabilizer AC Racing Pro Armor PRM Powermadd

07-19-2010, 08:24 AM	#11 (permalink)
cheapfast450r 400EX Rider Join Date: Feb 2008 Location: NC Posts: 1,022	unplug the sensor, does the light go out? if not then the wire is cut or shorted to the frame. if it goes out it's the sensor bad. __________________ drag bike 06 450ER Powered by Racers Edge, AZ *SS/SB* still clutch'n 4.57 in 300' trail bike 07 450ER SS/SB powered by spare parts and still faster than yours

07-17-2010, 08:31 PM	#1 (permalink)
Wyo_Dude TRX90 Rider Join Date: Jul 2010 Posts: 18	I just bought a 2007 TRX 450 today. After getting it home and riding it around for an hour or so, the red warning light next to the green neutral light is staying on. I hope it is some thing minor. It didn't have the manual with it so I don't know what might be causing this. I was wondering if maybe the oil was low or some other easy fix. Any information would be great.

07-17-2010, 08:35 PM	#2 (permalink)
hondaman01 450R Veteran Join Date: Oct 2005 Location: Belfry, KY Posts: 10,941	that is the oil temp light, it means your oil is getting to hot check to make sure your fan is coming on riding them around slow will cause them to get hot long before riding it hard will

07-17-2010, 08:44 PM	#3 (permalink)
Wyo_Dude TRX90 Rider Join Date: Jul 2010 Posts: 18	The light never came on while I was riding even though I was riding pretty easy, (I got lucky there Ha-ha). It has been sitting for a couple of hours and now when I start it the red light stays on. Is there another fan besides the radiator fan?

07-17-2010, 08:46 PM	#4 (permalink)
Baileygunns ~Mentally Hilarious~ Join Date: Nov 2009 Location: New Hampshire Posts: 2,776	How long does it stay on? It will stay on for a few seconds after the bike starts... Just like the dummy lights in a car or truck...

07-17-2010, 08:57 PM	#5 (permalink)
Wyo_Dude TRX90 Rider Join Date: Jul 2010 Posts: 18	I just let it run for about a minute and it never went off. The oil level is half full in the glass sight. Should it be full? I see the H and L marks on the case next to the oil sight but I assume that it is like most other bikes. You want the oil to fill the glass oil sight about half way?

07-18-2010, 12:52 AM	#8 (permalink)
Wyo_Dude TRX90 Rider Join Date: Jul 2010 Posts: 18	Coolant is full, oil on both sides are at proper levels, and the fan is spinning fine. I was thinking something in the wiring is gone bad. I guess replacing the sensor is the only way to tell if it is bad? It seems fine but that light just will not turn off. I just got it today and it is making me really worried. I got a pretty good deal on the Quad at 2,450.00. It is an 07 ER in great shape. He in my area they are selling for about 3500-4000. I am hoping to flip it and make a couple hundred bucks. If I have to start fixing stuff that won't work. I really hope it is simple. The rear brake light has been removed. Would that mess up other things in the electrical system?

07-19-2010, 01:27 PM	#14 (permalink)
oregonsandrat Oregon Coast Duner Join Date: Apr 2007 Posts: 2,480	See if the light goes out when you put it into gear. If so I bet that the lights got switched around. If not the sensor is on the thermostat housing on the head, it's just a spade clip.

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