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4.3 V6 Extremely high oil Pressure?

This is a discussion on 4.3 V6 Extremely high oil Pressure? within the Technical / Maintenance forums, part of the General Discussion category; I've searched the forums for an answer...and the two answers that come up are: 1) Bad stepper motor-must pull cluster ...

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    4.3 V6 Extremely high oil Pressure?


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    I've searched the forums for an answer...and the two answers that come up are:

    1) Bad stepper motor-must pull cluster
    2) Faulty oil pressure sending unit

    The questions that I have are...if it's the sending unit...where is it located (I found enough posts about the V8 location)...what about the V6 location?

    My gauge reads WAY past 80...if the gauge was a clock...it fluctuates between the 3 o clock position and 5 oclock.

    Occasionally it will read NORMAL...for a second or two...

    Could this be a loose wire running to the sending unit, too?

    Any help is greatly appreciated!!!

  2. #2
    Dealership Mechanic 05truckster's Avatar
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    Re: 4.3 V6 Extremely high oil Pressure?

    Does the gauge in the cluster drop to 0 when you engine is off or does it seem like it gets stuck?
    2005 Silverado 5.3l lm7 maroon, Airaid system, Hypertech programer, and 3.73 gears! Is destined to be great!

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    Re: 4.3 V6 Extremely high oil Pressure?

    When the engine is shut off...the needle goes to near the middle mark of the gauge...it doesn't go to zero.

    while the engine is running...the gauge fluctuates with the engine RPM...it's just reading from about 70 to way off the gauge to the right...

    BTW...about two years ago...the chevy dealer had to replace the whole cluster...when the whole thing went dead...right out of warranty. The dealer actually covered it under warranty!

    Any thoughts?
    Last edited by xplantdad; 07-10-2007 at 11:18 PM.

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    Re: 4.3 V6 Extremely high oil Pressure?

    Maybe you just have really high oil psi.

    Sounds better than having too low oil psi.
    2001 Chevy Silverado 1500, Fabtech 4" spindles on Eagle alloy 063s on 33" bfg all terrains, Limo Tint



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    Dealership Mechanic 05truckster's Avatar
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    Re: 4.3 V6 Extremely high oil Pressure?

    You have a bad cluster! not sending unit.

    yesterday we had to replace 5 cluster. there just a really poor design.
    2005 Silverado 5.3l lm7 maroon, Airaid system, Hypertech programer, and 3.73 gears! Is destined to be great!

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    Re: 4.3 V6 Extremely high oil Pressure?

    Yeah, that sounds like a gauge. My truck runs a little higher than half way on the gauge, over 30 psi. You'd think if it was really that high then you would have a problem and feel it or know it. The gauge should go to zero like the others when you kill the ignition.

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    Re: 4.3 V6 Extremely high oil Pressure?

    Engine off key on...... does it go to zero?
    -1999 GMC seirra 3500 4x4 SRW
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    Re: 4.3 V6 Extremely high oil Pressure?

    Quote Originally Posted by daman1
    Engine off key on...... does it go to zero?

    Nope....it seems that the zero point is the mid point on the gauge...


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    Re: 4.3 V6 Extremely high oil Pressure?

    It should go to zero with EOKO.
    -1999 GMC seirra 3500 4x4 SRW
    - Vortec 454
    - G80
    - 4:10's
    - 4L80E
    - regular Cab long box
    - Western Unimount electro touch 7'6" snow plow
    - 79,000 miles all stock

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    Dealership Mechanic 05truckster's Avatar
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    Re: 4.3 V6 Extremely high oil Pressure?

    Its a cluster. it jumped out of range.
    2005 Silverado 5.3l lm7 maroon, Airaid system, Hypertech programer, and 3.73 gears! Is destined to be great!

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    Keepin it Reeeeeeel $gmoney$'s Avatar
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    Re: 4.3 V6 Extremely high oil Pressure?

    my cluster goes on the white needle before 40 psi. Never hits 0 when the keys out.
    2001 Chevy Silverado 1500, Fabtech 4" spindles on Eagle alloy 063s on 33" bfg all terrains, Limo Tint



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    Re: 4.3 V6 Extremely high oil Pressure?

    Thanks guys...I really appreciate the help...

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    Re: 4.3 V6 Extremely high oil Pressure?

    Traded it in on a new 2007 Silverado...I like the V8 much better...along with the better mleage!

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    Re: 4.3 V6 Extremely high oil Pressure?

    Quote Originally Posted by xplantdad
    Traded it in on a new 2007 Silverado...I like the V8 much better...along with the better mleage!
    That one way to fix a problem. LOL!!!
    -1999 GMC seirra 3500 4x4 SRW
    - Vortec 454
    - G80
    - 4:10's
    - 4L80E
    - regular Cab long box
    - Western Unimount electro touch 7'6" snow plow
    - 79,000 miles all stock

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    Re: 4.3 V6 Extremely high oil Pressure?

    Yep...other things were starting to go wrong, too. I'd rather put my time, money and effort into my 66 Chevelle...
    Last edited by xplantdad; 07-16-2007 at 06:52 PM.

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    Re: 4.3 V6 Extremely high oil Pressure?

    Yep, good luck with your '07, nice truck!! :o)
    -1999 GMC seirra 3500 4x4 SRW
    - Vortec 454
    - G80
    - 4:10's
    - 4L80E
    - regular Cab long box
    - Western Unimount electro touch 7'6" snow plow
    - 79,000 miles all stock

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    Re: 4.3 V6 Extremely high oil Pressure?

    My truck runs 60 idle lol

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    Re: 4.3 V6 Extremely high oil Pressure?

    Quote Originally Posted by Tech Guy
    My truck runs 60 idle lol
    Warm?

    Mine runs like 55-60 cold
    18-21 idle
    30-40 crusing
    2001 Chevy Silverado 1500, Fabtech 4" spindles on Eagle alloy 063s on 33" bfg all terrains, Limo Tint



    http://www.cardomain.com/ride/3067770

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    Re: 4.3 V6 Extremely high oil Pressure?

    Quote Originally Posted by $gmoney$
    Warm?

    Mine runs like 55-60 cold
    18-21 idle
    30-40 crusing
    All the time, I think my gauge is broke. New cluster and sending unit and same thing. Im getting a real gauge today.

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