02 duramax rough idle

May 16, 2013 · OK all you Duramax experts, I've already received one opinion from a friend so I need a couple more before taking BART to a shop. At idle, I'm getting a pretty excessive amount of exhaust smoke. It's blue in color and smells pretty rich. The idle is smooth and there seems to be no loss of power or mpg and performs well as always. Symptoms: - Rough idle after being started- usually after a minute or so. - Idle smooths out in gear- Drive or Reverse, will do it but to a lesser degree in Neutral. - Changes from rough to smooth idle in park occasionally. So rough in fact that the box of the truck was vibrating. Once you put it into gear it seems fine. Elavated idle is turned on. I also currently own an 07 silverado 2500hd Lbz Duramax and a VW Golf Tdi. The Lbz never runs rough when cold and the Tdi will miss on very cold starts but smooths out right away. Aug 28, 2013 · Hello all, Ive been trolling the forums for quite a while. This forum is a never ending well of information. Was hoping yall could help me out a bit. I have a 2003 lb7, bought it about a year ago. Has roughly 210,xxx on it right now. Over the past few months I've noticed a knock, dont think... So rough in fact that the box of the truck was vibrating. Once you put it into gear it seems fine. Elavated idle is turned on. I also currently own an 07 silverado 2500hd Lbz Duramax and a VW Golf Tdi. The Lbz never runs rough when cold and the Tdi will miss on very cold starts but smooths out right away. white/grey/blue smoke at idle I had the same problem with my 04 3500 it started out just smoking at idle then it eventually went to smoking alot while taking off from stop took it to the dealer they found high return rates and replaced all injectors with no problems truck had 90000mi at the time hope this helps Jun 26, 2018 · I have a 02 Silverado 2500hd 6.0 4x4 with around 255k. Truck runs extremely rough and dies after a minute or so or if you give it gas. Put a new fuel filter on it and ordered a new fuel pump. Fuel regulator had good vacuum and has no fuel leaking. 10-15 psi at the fuel rail and it holds it when the engine is off. Dec 28, 2011 · I've got a 2007 Silverado 2500HD 6.0 Vortec with a PO300 random misfire/rough idle issue. 150k miles on the truck. I've read most threads on the subject (much appreciation!), and will try some more solutions today. The truck runs rough at idle, though smoothes out as the rpm's rise. One time, it did completely misfire and limped back to my shop. So rough in fact that the box of the truck was vibrating. Once you put it into gear it seems fine. Elavated idle is turned on. I also currently own an 07 silverado 2500hd Lbz Duramax and a VW Golf Tdi. The Lbz never runs rough when cold and the Tdi will miss on very cold starts but smooths out right away. Re: Fluctuating idle/Fluctuating voltage 01-08-05 05:02 PM - Post# 590579 In response to thealexdexter I burned out my first Silverstar after about a year. I had read where others have gotten a rather short life. I think the Silverstars burn a little hotter than stock to compensate for the slight blue tint that is on the lamp. Jun 14, 2016 · Help Rough Idle LLY LLY. Duramax Diesels Forum > Duramax/Diesel Technical > Duramax Hard Parts > LLY: Help Rough Idle LLY Symptoms: - Rough idle after being started- usually after a minute or so. - Idle smooths out in gear- Drive or Reverse, will do it but to a lesser degree in Neutral. - Changes from rough to smooth idle in park occasionally. This is a customer's 2002 that he brought in because he thought it might need injectors. Let us know what you think! (THIS IS AN EXTREME EXAMPLE!!) LB7 powered (through 2004 Duramax) Chevys and GMCs all suffer from injector failure at some point in their service life. Many fail as early as 50k miles. GM recognized this issue and actually had May 16, 2017 · Lly duramax runs good when cold but runs and idles rough when engine warmed up I have been having issues with the truck when warm, it runs and idles fine when cold but when the engjne reaches around 160 or more it starts to like lope at idle and when driving and coming to a stop it lopes really bad, I have changed fpr, 8 new 50hp dragon fly ... The symptoms are constant smoke at idle and gaining fuel in the oil. Unfortunately the best thing to do if you have this problem is to replace the whole set at once. Injector replacement on the LB7 truck is rather labor intensive and just changing one is usually not worth the risk for the labor costs. Mar 23, 2017 · If a technician has duplicated, or the customer description aligns with the speeds mentioned in the idle speed description tables, the idle speed should be considered a normal characteristic of current vehicle design. 39 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET EXPRESS 2010-2017 CHEVROLET SILVERADO 2017 CHEVROLET SILVERADO 1500 2011 ... 2005 LLY - rough idle, white smoke, fuel knock. ... 2007.5 Sierra 2500HD SLE 6.6L Duramax Extended Cab Long Box Z71 Fass 150/95, Rare Parts G2 hd tie rods, ... Jun 26, 2018 · I have a 02 Silverado 2500hd 6.0 4x4 with around 255k. Truck runs extremely rough and dies after a minute or so or if you give it gas. Put a new fuel filter on it and ordered a new fuel pump. Fuel regulator had good vacuum and has no fuel leaking. 10-15 psi at the fuel rail and it holds it when the engine is off. 2002 duramax smoking at idle - Cars & Trucks. ... 2005 GMC 2500 6.6 LLY I have rough idle, up and down, fluxuating. And my ECT gauge is all over the place too, but ... white/grey/blue smoke at idle I had the same problem with my 04 3500 it started out just smoking at idle then it eventually went to smoking alot while taking off from stop took it to the dealer they found high return rates and replaced all injectors with no problems truck had 90000mi at the time hope this helps This issue has been resolved since February 2013. It was the fuel pressure regulator or FPR as people keep commenting. I am leaving this video on youtube for... This is a customer's 2002 that he brought in because he thought it might need injectors. Let us know what you think! (THIS IS AN EXTREME EXAMPLE!!) LB7 powered (through 2004 Duramax) Chevys and GMCs all suffer from injector failure at some point in their service life. Many fail as early as 50k miles. GM recognized this issue and actually had The idle speed will increase to ~1250 RPM for 2001 - 2003 Duramax equipped trucks. 11) Engage the RESUME switch on the cruise control stalk. The idle speed will increase to ~1700 RPM for 2001 - 2003 trucks. 12) If the Duramax engine is cold, it may take a few seconds to a few minutes for the high idle to engage. This is normal operation. I have a 2007 chev 3500 6.6 duramax it will start idles rough and No pedal respo (2007 Chevrolet Silverado 3500 HD) Like someone said it will go up to 1500 rpm then stop Hey guys, I have a bone stock 2004.5 duramax. Sometimes it has a really rough idle. I can only notice it when its in gear and i am at a stop. I can hear the engine "laboring" at one spot and it lunges forward at that exact spot. This issue has been resolved since February 2013. It was the fuel pressure regulator or FPR as people keep commenting. I am leaving this video on youtube for... 2005 LLY - rough idle, white smoke, fuel knock. ... 2007.5 Sierra 2500HD SLE 6.6L Duramax Extended Cab Long Box Z71 Fass 150/95, Rare Parts G2 hd tie rods, ... Oct 15, 2017 · 02 Frontier Rough Idle. Discussion in 'General Tech' started by Nissan11, Oct 12, 2017. ... '02 2500HD Duramax, CCSB Super Duty Dana 60 Radius Arms & Coilovers While there are a variety of reasons your Chevrolet Trailblazer has a rough idle, the most common 3 are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil. Smokin 03 Duramax $5000! I have a 03 Duramax 4x4 and blue smoke comes out of the tailpipe at idle or low speed. It's not burning oil, but does seem to be loosing coolant? It runs good other than the blue smoke. No loss in milage or power, headgasket? Any help is greatly appriecated.