![]() ![]() ![]() ![]() It wouldn’t be fair to Chevy’s engineers to say that the 6.0 Vortec has a problem with the water pump. Some owners immediately tuned their vehicles to turn off the AFM system, but there are still a lot of vehicles with the system running. The active fuel management system shuts off half the cylinders to improve the otherwise poor gas mileage, but what has been reported on mass was severe oil consumption, lifter failure, and issues with the oil life monitoring system. Active Fuel Management SystemĬhevrolet decided to take something as simple as the Vortec 6000 engine and optimize it with high-tech components, but instead of improving it, they’ve only managed to create one of the major problems for the IV generation models. The problem is easily identifiable and can be mended at home by applying the DIY methods invented by 6.0 engine owners. The main symptoms of a leaking exhaust manifold are the smell of exhaust fumes in the cabin, louder engine noise, and some exhaust smoke coming from the engine bay. Through either improper torquing or low-quality bolts used in manufacture, the exhaust manifold will loosen up or even snap the bolts holding it in place. The real problem with the third generation Vortec 6.0 is the exhaust manifold leak. Most aftermarket throttle position sensors cost less than $50 and replacing them is extremely easy, so even though it’s one of the more frequent problems on the 6.0 Chevy engine, it’s not a real cause for concern. Any price and availability information displayed on at the time of purchase will apply to the purchase of this product. Product prices and availability are accurate as of the date/time indicated and are subject to change. Prices pulled from the Amazon Product Advertising API on: Throttle response and acceleration will also be affected, and the problem is always accompanied by a check engine light and a P0121 or a P012 error code. ![]() The low power and high fuel consumption can be caused by a faulty TPS sensor that’s making the engine run rich. While the MAF sensor measures the volume of air flowing into the engine, the TPS sensor has a similar role but takes measurements at the throttle body. The throttle position sensor (TPS) is often one of the first parts to go out on the 6.0 Chevy engine. While you can get some sense of power out of the Vortec 6000, it has been designed as a workhorse engine that prioritizes reliability over speed. Mostly fitted into Sierra and Silverado models, the engine has to move the 5,000+ pound truck along with its passengers and cargo. The Chevy 6.0 engine produces 300 – 400 horsepower depending on the generation and model, but the power output in real-life conditions is unimpressive. In some ways, it’s a better problem to have than reliability issues and frequent, unpredictable failures. Even though all the extra fuel is an added expense, it’s a known variable and you can easily calculate how much it’s going to cost you to run the vehicle. Having fuel consumption be the biggest problem with the engine is both a good and a bad thing. The gas mileage depends on the type of engine, how it was maintained and whether it’s under a load or not, but in general, owners struggled to cross more than 17 miles to the gallon. The Vortec 6000 is a thirsty engine, a point which every Chevy owner agrees with. It doesn’t have many flaws, so we’ll also have to look into its drawbacks from the design perspective if we are to discuss 7 problems.Ĭhevy 6.0 engine suffers from poor gas mileage, loss of power, throttle position sensor failure, exhaust manifold leak, active fuel management system failure, water pump failure, and engine knocking. Known as the Vortec 6000, this 6.0L or 364.1 cu-in V8 engine is a rugged low-tech engine meant to run for over 200,000 miles without major repairs. The term “LS engine” has been used for the third and fourth generations of the small-block V8s that were introduced in 1997 and are still in production. Chevrolet has been making small-block engines since 1954. ![]()
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