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post #1 of 9 (permalink) Old 12-21-2013, 10:08 PM Thread Starter
 
Join Date: Nov 2012
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Check engine light

How or what do I need to check for this stupid check engine light that seems to come on. Stupid yellow orange light. This thing has a horrible backfire on deceleration. I even race some 100 octane in it and changed the plugs. It has oil and runs ok otherwise. Only thing is the stupid speedo sensor is not bolted on. Any ideas before I leave for the dunes Christmas night? Happy holidays.
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post #2 of 9 (permalink) Old 12-22-2013, 12:46 AM
 
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Re: Check engine light

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Originally Posted by urclever View Post
How or what do I need to check for this stupid check engine light that seems to come on. Stupid yellow orange light. This thing has a horrible backfire on deceleration. I even race some 100 octane in it and changed the plugs. It has oil and runs ok otherwise. Only thing is the stupid speedo sensor is not bolted on. Any ideas before I leave for the dunes Christmas night? Happy holidays.
It is normal for the check engine light to come on ounce and awhile. If you shut off the engine and then restart, it should go out if nothing is wrong. One common reason for the light blinking is a dirty Map sensor. If your light is coming on all the time try cleaning the Map sensor. You need to buy the Weber diagnostic kit to check for trouble with your lap top. Weberpower.com has the diagnostic kit. All of the Redlines backfire on deceleration. It is caused by unburned fuel in the muffler that is extremely hot. The backfire usually causes a baffle to break out in the stock mufflers also. The speed sensor is supposed to be bolted on. Put a bolt in it.
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post #3 of 9 (permalink) Old 12-22-2013, 04:03 AM Thread Starter
 
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Re: Check engine light

Thanks pilot. Do you happen to know the bolt size and thread that goes in to the motor for the speedo sensor?
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post #4 of 9 (permalink) Old 12-22-2013, 11:50 AM
 
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Re: Check engine light

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Originally Posted by urclever View Post
Thanks pilot. Do you happen to know the bolt size and thread that goes in to the motor for the speedo sensor?
The speed sensor is held onto a small bracket with a 1/4" fine thread bolt. That bracket is bolted to the caliper mount on the gearbox with another 1/4" fine thread bolt and a nut. I'm talking about a Revolt and I think the Riot is the same. The sensor doesn't bolt to the motor. It is a magnetic sensor that rides behind the brake rotor about .080" away from it to send a signal to the speedometer. If you don't have the small bracket on your sensor you can fab it easily to position the sensor behind the rotor. The speedometer probably won't work properly even if everything is installed correctly. This has been a problem on the Redlines from day one. Mine worked for one day.
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post #5 of 9 (permalink) Old 12-22-2013, 01:24 PM
 
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Re: Check engine light

Mine works all of the time but my problem is I can't get my revolt to go any faster than 50mph.



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post #6 of 9 (permalink) Old 12-22-2013, 03:36 PM
 
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Re: Check engine light

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Mine works all of the time but my problem is I can't get my revolt to go any faster than 50mph.
The first ride I went on mine went up to 65 and after that it read 20 when I was parked and 30 all the time it was moving even after buying a new sensor. Most of us took the speedometers off to give more room for important gauges. We don't really care how fast they go as long as it is scary.
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post #7 of 9 (permalink) Old 12-22-2013, 05:22 PM Thread Starter
 
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Re: Check engine light

Is that bolt a Allen head? I think that would be the easiest to put it in without removing the brake disc.
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post #8 of 9 (permalink) Old 12-22-2013, 06:54 PM
 
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Re: Check engine light

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Originally Posted by Pilot View Post
Quote:
Originally Posted by sandracer1 View Post
Mine works all of the time but my problem is I can't get my revolt to go any faster than 50mph.
The first ride I went on mine went up to 65 and after that it read 20 when I was parked and 30 all the time it was moving even after buying a new sensor. Most of us took the speedometers off to give more room for important gauges. We don't really care how fast they go as long as it is scary.
Yep, if you aren't scared you are not going fast enough. I will be putting a gps speedo that does way more than tell me current speed. New guages are clamp ons. Stealing all of the good stuff off of rrawtrys I bought for the wifey. Needless to say she is not too happy. I have a ton of work to do before May trip.



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post #9 of 9 (permalink) Old 12-22-2013, 07:16 PM
 
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Re: Check engine light

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Is that bolt a Allen head? I think that would be the easiest to put it in without removing the brake disc.
No, but it doesn't matter what you use to hold it in place.
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