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Thread: steering and voltage

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    Senior Member mitsumi's Avatar
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    Question steering and voltage

    Hi guys!

    Is it normal that my voltage drops whenever i turn the steering wheel?
    I noticed this when i installed my HUD with a voltmeter in it.

    on idle its 14+ on volts but when I turn the steering it drops to 14 below.


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        click to view fuel log View my fuel log 2015 Mirage GLS 1.2 manual: 3,108.4 mpg (US) ... 1,321.5 km/L ... 0.1 L/100 km ... 3,733.0 mpg (Imp)


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    Senior Member PityOnU's Avatar
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    As opposed to the hydraulic power steering used in vehicles in the past, modern vehicles like the Mirage use Electronic Power Steering (EPS). As the name implies, EPS using electronic power and an electric motor to assist in steering.

    The motors used in EPS systems can pull down a lot of juice, so the sag in voltage when turning the wheel is expected.

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    What pity on you said,

    Electronic power steering motors are normally around 1hp.

    The battery is suppose to act as a buffer for the alternator. If you are seeing a serious voltage drop/sag when steering. I.e high beams dim when steering you may have a bad battery.
    please consider checking out my Mirage related youtube channel: https://www.youtube.com/channel/UC6c...IEViRFw/videos

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    Senior Member Ares's Avatar
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    The better question may be: can the draw of the EPS be adjusted (lowered) to increase weight/feel - which would benefit skinny OEM wheels/tires.

    My 195s don't have this issue.

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    Quote Originally Posted by Ares View Post
    The better question may be: can the draw of the EPS be adjusted (lowered) to increase weight/feel - which would benefit skinny OEM wheels/tires.

    My 195s don't have this issue.

    My 1990 Ford Festiva (designed by Mazda, built by KIA, sold by Ford) had narrow 145SR12 tires. I drove that car for 14 years. It handled better on the highway than the Mirage, because it had no power steering.

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    Senior Member Ares's Avatar
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    Quote Originally Posted by Mark View Post
    My 1990 Ford Festiva (designed by Mazda, built by KIA, sold by Ford) had narrow 145SR12 tires. I drove that car for 14 years. It handled better on the highway than the Mirage, because it had no power steering.
    Please. 1990s without PS is normal.

    I had a 2009 Kia Rio without AC and PS. I believe came standard with skinny 13s (or was it 14s) and it too drove well.

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    Quote Originally Posted by Ares View Post
    Please. 1990s without PS is normal.

    I had a 2009 Kia Rio without AC and PS. I believe came standard with skinny 13s (or was it 14s) and it too drove well.
    Please. None of the 2009 KIA RIO cars had narrow tires. A factory size 175-195 tire on a KIA RIO is not a narrow tire for a car that size. My ex-wife had a 2007 KIA RIO for a long time. ​

    Power steering was invented in 1951.

    "As early as 1953, there were already 1 million cars using power steering. This time, the public took an immediate liking of power steering, and driving would never be the same. By 1956, a quarter of all cars in America had power steering. And, by 1960, that amount would increase to more than 3.5 million."

    Power steering was pretty common by the 1990s. Even several tractors from the 1960s & beyond had hydraulic power steering.

    The EPS of the Mirage is not impressive for the current period. I agree that reducing it would help the driving dynamics of the car.

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    Quote Originally Posted by Mark View Post
    Please. None of the 2009 KIA RIO cars had narrow tires. A factory size 175-195 tire on a KIA RIO is not a narrow tire for a car that size. My ex-wife had a 2007 KIA RIO for a long time. ​

    Power steering was invented in 1951.
    Please. I drove a lot of 2003 through 2012 Hyundai / Kia vehicles. I had to get out and threw up every time.

    (I mainly just wanted to get a please in.)

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        click to view fuel log View my fuel log 2020 Mirage ES 1.2 manual: 42.4 mpg (US) ... 18.0 km/L ... 5.6 L/100 km ... 50.9 mpg (Imp)


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    Senior Member Ares's Avatar
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    My point was that seeing a vehicle with no PS in 1990 was more common than seeing a vehicle with no PS at 2009.

    Quote Originally Posted by 7milesout View Post
    Please. I drove a lot of 2003 through 2012 Hyundai / Kia vehicles. I had to get out and threw up every time.

    (I mainly just wanted to get a please in.)
    you're welcome.

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    Quote Originally Posted by Ares View Post
    My point was that seeing a vehicle with no PS in 1990 was more common than seeing a vehicle with no PS at 2009.
    Lightweight FWD cars don't really need PS, & they may actually handle much better on the highway without it. I don't think the time period is all that important. ​

    I think a cheap 1988-93 Festiva (paid $5,300 new) benefited from Mazda engineering (when it came to steering/handling).

    If I had the choice of buying a new 1990-93 (became fuel injected 1990) Festiva or a current Mirage, I would pick the one with fewer features & more character.



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