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Thread: Rough idle!
05-03-2012, 01:25 AM #1
- Join Date
- May 2012
- Ontario, Canada
Hey guys and gals,
I recently purchased a 2008 Silverado LT 5.3L V8 with 52,000km. After getting comfortable with the ride, I noticed a rough idle, in gear, while stopped. The rpms fluctuate between 400 and 750, it never stalls but I get a bogged out feel. During the fluctuation, the oil pressure drops slightly, lights dim/flicker, and, annoying vibration.
Plugs are original, runs in 87 octane.
Could anybody lead me in a certain direction as to what could be the cause? any feedback is appreciated!Stay Classy, Wear a Bowtie!
05-03-2012, 06:39 PM #2
Try injector cleaner and then a plug change if that does not help. I have had good results with Lucas products and I it did more good than the Sea Foam treatment did.2000 GMC YUKON SLT, 5.3L tow pkg, G80 rear/w 3.73 gear
05-03-2012, 06:55 PM #3
I would have the alternator checked out. I was having a similar issue with my 03 and it turned out to be the alternator and battery.
1995 Silverado 4x4
6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge
2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
2002 Silverado ext cab 2wd (Sold)
2003 Yukon XL (Totaled)
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