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mkibbe

2014 Suzuki King Quad 750 irs Power Steering

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My 2014 750 king quad stalls sometimes when I touch or turn the handlebars,the problem has gotten worse,my machine has 475 miles and is only trail ridden,I have a new factory battery and i have 14.2 volts when the quad is running and 13.3 on the battery when not running,also using a multimeter there is no change in volts when turning the bars until it does stall,If I pull the 40 amp power steering fuse it will not stall.......I've been told its the ECU,Hate to buy one if thats not the problem,but its kinda leaning towards that,,,,,need some opinions.

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First off, love the quad! The rims/tires and color scheme looks great. Looks like you have some aftermarket guards/bumpers on there, correct? Post some more pics, maybe even in the gallery https://www.quadcrazy.com/gallery/

As far as your power steering issue, I'm not sure if its the ECU. When you are getting the electric power assist, it should be consuming or drawing on the electrical system and the fuel injection may be cutting out from not enough power. Maybe it's your voltage regulator?

 

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Thanks for your comment,Yea I put bumpers, pro armor and aluminum products skids,Elka shocks,ect,ect......here's a few more and my other toy.......how do I check my voltage regulator......

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I just did a check with a multimeter while it was running,14.2 to 14.6 running,then i slowly turned the bars just a enough to apply pressure and my voltage dropped to 12.7 volts,does anyone know the specs that the power steering uses voltage wise.......but as i said above if i keep it revved it won't stall....

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Hey I'm having the exact same issue have you found a fix for it?

 

Edited by Ryan H

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I would suspect the  voltage regulator  or the  alternator. There's also the  possibility  the  power steering is drawing too  much  power  for some reason  and the  momentary  voltage  drop is causing the  ignition or  fuel  injectors  to  cut  out.  When  you have the  motor  revved up  the  alternator is putting  out  more power so  you wouldn't  get  the  large  drop  and  cut  out. I don't think  it  is the  ECU.

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I can’t tell you guys how dumbfounded I am that I just found this post (9-22-2020). I have been all over the Internet and have spent countless hours of frustration chasing possible fixes on my quad : 2014 Suzuki king quad 750 power steering.  I’ve owned it for 3 years and have tried everything to get it to stop STALLING     Thanks to Mkibbe for posting that his friend told him to disconnect the ground wire coming off the wiring harness and going to the rectifier as pictured. My KQ has not stalled since.  

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Disconnecting the ground wire doesn't fix the issue, but will cause the electrical system to seek out another ground since that one is broken.  i'd bet it's a faulty plug, internally broken wire, or bad ground point that needs to be cleaned.  The worry with disconnecting a ground is that sends additional load to another ground, potentially burning the ground wire.

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