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Unread 09-08-2019, 03:26 PM   #1
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Default 1990 ezgo only goes fast

Hello. I just bought a 1990 ezgo for hauling feed around the farm. I've never drove one before. I'm assuming this isn't normal. You have to floor it for it to run. If you let up on gas at all it stalls. It goes way too fast about 20mph and no other speed at all. That's too fast to run around chickens. Is this the way they are? It's either 0 speed or fast. Thanks.

Last edited by devon104; 09-08-2019 at 03:47 PM.. Reason: Typod
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Unread 09-08-2019, 03:43 PM   #2
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Default Re: 1990 ezgo only goes fast

No, it's not normal. Is it a 2 stroke, or 4 stroke engine?
I just don't see a 2 stroke hitting 25mph. Even with big tires.

Once we know which engine you have, we will provide you with the correct manual to adjust your throttle.
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Unread 09-08-2019, 03:46 PM   #3
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Default Re: 1990 ezgo only goes fast

It's a 2 stroke. It's about 20 sorry I typod.
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Unread 09-08-2019, 07:49 PM   #4
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Default Re: 1990 ezgo only goes fast

https://app.box.com/s/3habgxrtgz I think the carburetor, and linkage is chapter 14.

The carburetors have no adjustment. There are fixed low speed, and high speed jets.

I suspect that your low speed jet is clogged. Your carburetor needs a super duper cleaning which includes taking out the center brass stem.
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Unread 09-08-2019, 08:12 PM   #5
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Default Re: 1990 ezgo only goes fast

Or the cable is adjusted wrong or sticking.
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Unread 09-09-2019, 07:46 AM   #6
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Default Re: 1990 ezgo only goes fast

I was thinking the throttle plate could be stuck open, but then throttle position wouldn't make a difference. The pedal microswitch could be out of adjustment.

When you let off the gas, and it dies, does it backfire when you step on the gas again?
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Unread 09-09-2019, 08:15 AM   #7
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Default Re: 1990 ezgo only goes fast

Quote:
Originally Posted by cart around View Post
I was thinking the throttle plate could be stuck open, but then throttle position wouldn't make a difference. The pedal microswitch could be out of adjustment.

When you let off the gas, and it dies, does it backfire when you step on the gas again?
That was my first thought. IF the carb is half opened when the microswitch engages, it's gonna take off. no slow speed settings there.

Those do have that funky little metal link rod between the governor and the throttle as well. If that is stuck or jammed funny, it will also not be happy.


Easiest fix is probably to make sure the throttle cable operates smoothly, and run it straight to the carb, bypassing the governor all together. quick, easy, and free
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Unread 09-09-2019, 10:20 AM   #8
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Default Re: 1990 ezgo only goes fast

Quote:
Originally Posted by cart around View Post
I was thinking the throttle plate could be stuck open, but then throttle position wouldn't make a difference. The pedal microswitch could be out of adjustment.

When you let off the gas, and it dies, does it backfire when you step on the gas again?
no it doesn't
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Unread 09-09-2019, 12:00 PM   #9
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Default Re: 1990 ezgo only goes fast

My first thoughts, although you guys have already covered it very well.......

Since it goes 20mph I'd guess the Gov is already disconnected, a broken throttle cable would put it in wfo all the time. But I'd think it would backfire at start up.....

So, like said above perhaps out of adjustment throttle cable or micro switch is where I'd start
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