Hi all,
Does anyone have the wiring diagram to the check engine light? I've got an '04 GS500F.
I changed the pressure sensor out and the check engine light is still flickring. I was sitting in a grid lock, and the engine light stayed on. Is there a temperature sensor I should check? Anyone have any ideas as to why this light is still wacky? The bike is still running fine.
The GS Does not have a check engine light ???
What color? You mean your oil light maybe?
The red one is wired to an oil pressure sensor/switch - nothing else. Orange is power, green/yellow is to the switch, the switch goes to ground when the oil pressure is too low, the light comes on. Simple, very simple.
If it's on, you have trouble. Big Trouble, usually.
Quote from: joepua on September 11, 2009, 04:47:02 PM
Hi all,
Does anyone have the wiring diagram to the check engine light? I've got an '04 GS500F.
I changed the pressure sensor out and the check engine light is still flickering. I was sitting in a grid lock, and the engine light stayed on.
Check your turn signal fluid. common problem on the gs500. :thumb:
Quote from: DoD#i on September 11, 2009, 04:58:39 PM
The red one is wired to an oil pressure sensor/switch - nothing else. Orange is power, green/yellow is to the switch, the switch goes to ground when the oil pressure is too low, the light comes on. Simple, very simple.
If it's on, you have trouble. Big Trouble, usually.
Ya, the oil light is what I am referring to.
I've changed the pressure sensor switch, so it can't be that, I think. If it was oil pressure wouldn't my motor be toast by now? Is there anything else I can check?
Quote from: joepua on September 11, 2009, 04:47:02 PM
Hi all,
Does anyone have the wiring diagram to the check engine light? I've got an '04 GS500F.
GS500F
http://img.photobucket.com/albums/v300/tdan553527/Page26.jpg
For reference GS500E
http://wiki.gstwins.com/index.php?n=Main.USEKModel
http://www.bbburma.net/Scans/Haynes_WiringDiagram_US_90-96.jpg
Further Discussion of GS500 wiring diagrams
http://gstwins.com/gsboard/index.php?topic=48153.0
unhook the wire from the switch, and start the bike. is your light still on? if it is, you have a wire grounding out somewhere
Quote from: joepua on September 11, 2009, 04:47:02 PMI changed the pressure sensor out
Check your connections. When you change something and something immediately doesn't work right, the first suspect is the thing you changed.
Quote from: jeremy_nash on September 11, 2009, 05:58:31 PM
unhook the wire from the switch, and start the bike. is your light still on? if it is, you have a wire grounding out somewhere
I just tried this, and the light is off. Usually when the key is in the 'on' position, the engine light comes on until I start the bike, which is normal, but with the wire unhooked it never comes on.
I am beginning to think it is oil pressure, but at such low km's? 9400 only.
Quote from: Roadstergal on September 11, 2009, 06:05:17 PM
Quote from: joepua on September 11, 2009, 04:47:02 PMI changed the pressure sensor out
Check your connections. When you change something and something immediately doesn't work right, the first suspect is the thing you changed.
I thought the problem was the oil pressure switch, but I switched out the old one with one from the dealer, and the problem still exists.
I just tried jermey's suggestion, but it now seems that the connection is good according to his test.
Ugh, I just can't imagine this bike needing a rebuild @ 9400 kms. It hasnt even been dropped.
And the light only flickers @ ~110 km/h usually. Isn't that when oil pressure is @ it's highest?
What oil are you using? How soon after an oil change did the Flickering begin?
Friend had troubles with his Triumph when he went to synthetic oil. Switched back and problem went and stayed gone.
Michael
Whats your idle rpm? It should be 1100-1200. My oil light comes on below 800-900 rpm.
Quote from: mister on September 11, 2009, 07:21:34 PM
What oil are you using? How soon after an oil change did the Flickering begin?
Friend had troubles with his Triumph when he went to synthetic oil. Switched back and problem went and stayed gone.
Michael
I'm using Motul 5100 Semi-Synthetic 10W40. I was thinking of going to full synthetic, but im not sure if that'll make a difference. From reading the wiki, It doesnt seem like it would help. Anyone know?
It is very wierd, when the motor is cool, the light doesnt flicker until I reach ~110km/h. If the engine starts to get hot the light will flicker sporadically and last week, sitting in grid lock, it stayed on.
Quote from: black and silver twin on September 11, 2009, 08:12:00 PM
Whats your idle rpm? It should be 1100-1200. My oil light comes on below 800-900 rpm.
The idle is set @ 1500RPM. When I idle, it never comes on.
~110km/h, 5500RPM is when it starts to flicker.
if its flickering at high rpms your oils not returning fast enough to the pan and your getting oil starvation. I would make sure your oil is returning from the head properly.
update ?
Josh is onto it. Make sure the oil is full. If it is, do a test. Drain your oil and replace it with conventional oil. I bet the problem will go away. I think your oil pressure light is telling you the semi-synthetic oil isn't flowing properly. This wouldn't surprise me because your engine wasn't designed with synthetic oil in mind. Why use expensive oil in a cheap bike? Try 15W-40 truck oil and watch your problems go away and it will shift like a dream! :thumb:
I think switching engine oil will be my next move.
Since Josh mentioned oil starvation is the issue, would 15W40 be the next logical choice ?
Can anyone recommend a reputable brand?...
I think ive changed oil 3 times in the past 3 months lol, using the same oil. Ugh.
You could have a clogged galley right next to that switch.
You could also have a bad oil pump or a bad bypass system ... which is on a GS related to that filter hatch and spring etc.
Cool.
Buddha.
Quote from: bill14224 on September 12, 2009, 10:32:50 AM
Josh is onto it. Make sure the oil is full. If it is, do a test. Drain your oil and replace it with conventional oil. I bet the problem will go away. I think your oil pressure light is telling you the semi-synthetic oil isn't flowing properly. This wouldn't surprise me because your engine wasn't designed with synthetic oil in mind. Why use expensive oil in a cheap bike? Try 15W-40 truck oil and watch your problems go away and it will shift like a dream! :thumb:
mmm, don't think so. oil is oil is oil as far as the sending unit cares. so long as there is:
a) enough pressure
b) enough oil
c) electric circuit
the light won't come on.
i'd bet on a bad sending unit, a bad electric circuit, or low oil pressure. changing oil is just going to cost you another few bucks and make you scratch your head again.
How did you check your oil level?
Engine cold - hot - just turned off?
On sidestand - centerstand - balanced sitting on it?
Oil dipstick/plug sitting on top of threads - screwed in tight?
Oil level filled to what mark: low - middle hash marks - high?
Quote from: ohgood on September 13, 2009, 07:25:09 AM
Quote from: bill14224 on September 12, 2009, 10:32:50 AM
Josh is onto it. Make sure the oil is full. If it is, do a test. Drain your oil and replace it with conventional oil. I bet the problem will go away. I think your oil pressure light is telling you the semi-synthetic oil isn't flowing properly. This wouldn't surprise me because your engine wasn't designed with synthetic oil in mind. Why use expensive oil in a cheap bike? Try 15W-40 truck oil and watch your problems go away and it will shift like a dream! :thumb:
mmm, don't think so. oil is oil is oil as far as the sending unit cares. so long as there is:
a) enough pressure
b) enough oil
c) electric circuit
the light won't come on. i'd bet on a bad sending unit, a bad electric circuit, or low oil pressure. changing oil is just going to cost you another few bucks and make you scratch your head again.
I conducted Jermey's test by unhooking the pressure switch and starting the bike. The light was off. I am assuming that confirms that the electrical is good?
When I first noticed the light flickring, the oil was little low. I went to the nearest gas station and bought 10W40 motor oil for the car and temporary filled it up. After about 45min of riding, the light went away. When I came home, I drained it and put in motul 5100 10W40 oil, and the problem came back. 10W40 is 10W40 isnt it?
This is why I thought my next move would be change the oil.
So right now, I have the following:
1) good pressure switch
2) good electrical system
3) ????
need help on what my next move should be.. without taking apart the motor.
Quote from: The Buddha on September 13, 2009, 07:24:56 AM
You could have a clogged galley right next to that switch.
You could also have a bad oil pump or a bad bypass system ... which is on a GS related to that filter hatch and spring etc.
Cool.
Buddha.
What do you think I should check next Buddha? hopefully without taking the motor apart, I don't have the tools at my disposal right now..
Quote from: BeerGarage on September 13, 2009, 08:25:43 AM
How did you check your oil level?
Engine cold - hot - just turned off?
On sidestand - centerstand - balanced sitting on it?
Oil dipstick/plug sitting on top of threads - screwed in tight?
Oil level filled to what mark: low - middle hash marks - high?
I put it on the centre stand and put the rear wheel on the ground when I checked the oil. It is right at 'F'. The dip stick is screwed on tight.
The flickering is a lot worse when the engine is hot. When it is cold, it only comes on when I reach ~110km/h...
Any ideas?
Lots of speculation so far........ but have you considered the obvious and actually getting the oil pressure checked and ensuring its within service limits??..To me it seems the obvious thing to do :dunno_black:
Hi Joepua,
Here's what you wrote about how you check your oil level:
Quote from: joepua on September 13, 2009, 01:14:38 PM
Quote from: BeerGarage on September 13, 2009, 08:25:43 AM
How did you check your oil level?
Engine cold - hot - just turned off?
On sidestand - centerstand - balanced sitting on it?
Oil dipstick/plug sitting on top of threads - screwed in tight?
Oil level filled to what mark: low - middle hash marks - high?
I put it on the centre stand and put the rear wheel on the ground when I checked the oil. It is right at 'F'. The dip stick is screwed on tight.
The flickering is a lot worse when the engine is hot. When it is cold, it only comes on when I reach ~110km/h...
Any ideas?
If you do it this way, with the
dipstick screwed in tightly, then you are doing it
WRONG!The proper way to check engine oil level on this bike is with the dipstick
sitting on top of the filler hole, but NOT screwed in! You are correct to have the bike sitting on the centerstand.
So in fact, you are running without enough oil, hence your oil light is coming on.
I hope you can fill it properly and haven't caused damage, but it is hard to say what you will find.
Add more oil properly, and see what happens.
Oh, and I fully agree with sledge, a motorcycle shop can attach an external oil pressure gauge to the oil gallery (where the oil pressure sensor screws in, I believe) and give you an accurate actual reading of your oil pressure, which will answer a lot of questions about this problem. But I would first properly top up your oil and hope that fixes it. No point looking backward. If the damage is done, the damage is done. I hope you escaped with no damage. :)
Good luck man.
Yours,
Trwhouse
Quote from: joepua on September 13, 2009, 01:14:38 PM
I put it on the centre stand and put the rear wheel on the ground when I checked the oil. It is right at 'F'. The dip stick is screwed on tight.
Do it right. Center stand, yes. Use level ground. Rear wheel on ground - NO! Screwed in tight - NO!
You don't have enough oil in the bike because you are checking/filling it wrong. Put it on the centerstand The normal position (front wheel on ground, rear wheel off ground) and set the dipstick on the hole, not threaded in at all. Any properly equipped shop can check the actual oil pressure for you and remove any remaining mystery.
Yo DoD#i...
Quote from: DoD#i on September 13, 2009, 03:53:26 PM
Quote from: joepua on September 13, 2009, 01:14:38 PM
I put it on the centre stand and put the rear wheel on the ground when I checked the oil. It is right at 'F'. The dip stick is screwed on tight.
Do it right. Center stand, yes. Use level ground. Rear wheel on ground - NO! Screwed in tight - NO!
You don't have enough oil in the bike because you are checking/filling it wrong. Put it on the centerstand The normal position (front wheel on ground, rear wheel off ground) and set the dipstick on the hole, not threaded in at all. Any properly equipped shop can check the actual oil pressure for you and remove any remaining mystery.
:)
Didn't I just say all that in my post above some two hours before you posted?
Just checking. :)
I'm glad we agree.
Best wishes,
Trwhouse
to the OP: so what's the update? did you fill her up with oil yet?
hope it works for you and that there's no damage to the engine.
good luck
Quote from: Trwhouse on September 13, 2009, 04:57:11 PM
:)
Didn't I just say all that in my post above some two hours before you posted?
Just checking. :)
I'm glad we agree.
Best wishes,
Trwhouse
Nope, you failed to address the bizarre practice of tipping the bike on its centerstand so the back wheel touches the ground (further messing with the oil level, and making for a very awkward process besides). Otherwise I'd have not bothered to post. :) :cheers:
aww snap!
Dear DoD#i,
LOL.
Yes, you are right. I left out a comment about the "tilting the bike back on the rear wheel" to check the oil.
I too had never heard that one before. :)
Best wishes,
Trwhouse :)
This whole thread is turning into an epic....how much difference does tilting it back on the rear wheel actually make to the reading/level :laugh: more importantly is it enough to have any detrimental or significant effect??............ I think not. A few mm short on the stick does not mean the bike is about to die a horrible death within the next few miles :D
So whats next gents?....Tyre pressures correct to 3 decimal places?? :icon_eek:
Sledge, my friend,
You misread our comments.
We were being sarcastic about the tilting of the bike.
It was so ridiculous, and unnecessary, that we were joking about it. The owner is the one who thought it was necessary. We were telling him otherwise.
Take a deep breath, bub. :)
All is OK with the world.
Yours,
Trwhouse
Sorry for the lack of update guys. I can only work on the bike on the weekends lol.
Ok, so I unhooked the wire that goes from the pressure switch to the light. I twisted the handle bars around and the light came on.... this means it's shorting out?
Can anyone confirm...
I checked the engine oil once again and it is full. (On stand, with the front wheel down)
How about this:
Since you operate it on two wheels, check the oil level while sitting on it ? Makes sense to me.
Yes, you have a short.
Yep, you have an intermittent short. Jeremy nailed it way back in this thread.