Jump to content

6.0 H.d. Engine Question

mkcom1

Recommended Posts

mkcom1 Enthusiast

mkcom1

Posted
Posted

Hi

Hopefully this is the right spot for this. 05 1500H.D. crew 6.0 l Okay so the basic question is that I notice and have for some time a slight shutter at idle off the motor. Runs fine at speed and generally any other time. Holds the idle okay just a slight shutter now and then. I have no check engine light so I think that would mean no codes that the computer is picking up. Fuel mileage is as it is all the time. This isn't really a big problem just something I notice. In the past when you could work on a car I would think a vacuum leak or maybe wires plugs etc. . I have replaced, after codes both knock sensors that cleared said codes , plugs, and wires, cleaned the throttle body and maf ( no reason just maint,}, and do run a K& N filter pack. Just regular stuff. Truck has about 63k on it. I would think that if there was anything wrong the computer would pick it up. I had thought that perhaps maybe slightly low fuel pressure at idle, but again wouldn't the computer pick that up? Just wondering where to start or if it is even worth it? Would a tune fix this? Ken

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

Its not uncommon for these engines to do that. I don't think I'd worry to much about it. LQ4 motor is pretty solid. :)

mkcom1 Enthusiast

mkcom1

Posted
  • Author
Posted
Mine has the shutter too.

 

 

Thanks for the input. I have read that here and on other boards but thought I would ask. I guess that I just go back to my youth when I could tune an engine to purr at 400rpm and idle like butter. Great board and thanks again. Ken

jro909 Senior Enthusiast

jro909

Posted
Posted

mine also....i also have the issue with the exhaust vibrating which ripples through the truck

HawkScot Enthusiast

HawkScot

Posted
Posted

When our 2008 Yukon XL Denali has a stutter or slight hesitation, I change brands of gas for a few thousand miles. It usually clears right up with a new full tank of different tier one brand.

 

I have been told that the additives are different between brands and by changing brands (and then running the same brand for several thousand miles) minimizes the deposits.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • SoCal Angler
      OEM Trailer Hitch Receiver - Impact tightened by shop

      By SoCal Angler · Posted

      After my recent rear end bumper damage, body shop has made the repairs and included a new OEM receiver hitch.  I started thinking about how it was tightened...to specs or by hand or ??.  I called the body shop and asked and they said it was tightened by an impact gun.  I said I wanted it tightened to OEM specs.  They said no problem, bring it to shop today and they will torque to specs, which they say is 74 ft/lbs.   A couple of questions,,,,   1.  Should new bolts have been used?  If so, how many are there (bill shows one and four (I assume different areas of receiver).   2.,  Since they torqued with impact gun and now are going to probably loosen and then torque to spces, will that damage/stretch the bolts?   3.  If old bolts were reused (truck has 9000 miles), is that a problem?   4.  Any other things iI may have missed with regard to receiver replacement?   Thanks!
    • newdude
      Defective Brake Pad Wear Sensor?

      By newdude · Posted

      Is this supposed to be in English?  "close to 100 fake, new brake pads sign on the dash board"     Pull the wheels off.  Check the brake pad thickness.  Check the sensors out.  You could have good pads and the sensors aren't in to the worn out position, but have an electrical fault with the sensor or the plug wiring to the sensor.   
    • newdude
      Trans Cooler Thermostat Valve Body Seals - 2022 10L80

      By newdude · Posted

      Gas or diesel???????????   You did not indicate.  Your topic just says "2022 10L80".      
    • Donstar
      Navigating senior years.

      By Donstar · Posted

      Tomorrow I go in for my third joint replacement in jus a little over a year year!  I am not worried about the surgery but I am a little annoyed about going through the recovery process again!  I keep my frustrations to myself as I do appreciate that I am truly lucky.  Knee, hip, and shoulder replacements are routine, safe and improve mobility.  The next couple of days will be slow but every day following will see steady improvement in my mobility.  
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      Practical Application ISO 4406   I think this oil cleanliness thing is going to boil down to ones personal resolve. The information is there but applying it I believe will test your commitment to the machine. Implementation would involve building or buying a prefilter or purchase of an "ISOCLEAN" oil. Then installing a single digit micron bypass system. A good deal of testing and about 99.9% of you are saying at that point....yea.....not my cuppa tea. So what can you do?    You already did the first step. Get educated and leave the bias at the door. Be aware of the its, cleanliness, importance.    Do your own work if you can. Keep the equipment clean. Not just your funnel but the engine bay. Use sealed containers. Think it through.    I believe you will find, as I did, that the tightest absolute full flow filters (Beta 200) will be around 20 micron. That will yield on average a Beta 75 of 10-15 micron. They are few in number by brand and price point. Loose filters are a dime a dozen and even the best brands have lines of loose filters. Some cleverly marketed as "Extended Service". Others will market flow over efficiency. But I think the take away once informed is that the extra cost of the best offered is a bargain. There are cheaper filters with good efficiency that are equal in performance to niche brands with big prices. Your Quick Lube is about a 40 micron unit. This is where your dealer is a plus. the AC-Delco filter is a good step up from those places. Even better if you specify the UPF line.    Be skeptical of marketing. Buying an oil that is made from GTL advertised as the cleanest base oil is using a truth to support a lie. While GTL's are made from debris free gas the processing equipment and post handling is just like any other oil. It also ignores the fact that PAO's and Esters are also gas in origin. Any private prescreening testing you would do, and some have done, would yield a result only good for the batch you tested. AMSOIL and Schaeffer's have built a reputation for paying attention to this detail.    Context. Cold starts account for at least 75%, or more, of an engines wear. But of the remaining 25% ish, over 80% is caused by particle count. Now where do we find high milage motors that use this type of information efficiently? OTR trucking!      Now, anyone want to build a prefilter or off line cleaning system anyway?   

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...