99 4.8L V8 Fuel Economy Decrease
May 13th, 2006, 11:40 AM
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99 4.8L V8 Fuel Economy Decrease
After owning my 1999 Chevy 1500 with a 4.8L V8 for a while now, I have noticed a steep drop in fuel economy after around 60,000 miles. I was getting around 16 MPG and then all of a sudden it dropped to 13-14.
I talked to another owner of this truck and he said that this economy decrease was a common issue with the 4.8 L engine. He said that Chevy was trying to address the issue but had not results.
Does anyone have any solutions to this fuel economy problem with high-mile 4.8L?
I talked to another owner of this truck and he said that this economy decrease was a common issue with the 4.8 L engine. He said that Chevy was trying to address the issue but had not results.
Does anyone have any solutions to this fuel economy problem with high-mile 4.8L?
July 17th, 2006, 8:14 PM
#2
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RE: 99 4.8L V8 Fuel Economy Decrease
I always heard it has something to do with the pcv valves on the 4.8, try changing them out then let me know how it went. I have a 01 with a 4.8 also....
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