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Question
aussiematt
Gday Everyone.
I have a 2003 Chevrolet Suburban K1500 LT with a 5.3L 'Z' type engine. For the last 3-4 years it has consistantly used 13-14L of fuel per 100 Km. It is always regularly serviced. For no apparent reason it is now using 21-22L per 100 km. It has been scanned and the error code PO178 came up, a new costly fuel composition sensor has been installed and still no let up with high fuel consumption. Instantanios figures at idle go to 99L / . even under extremely gentle excelleration it goes to well over 35L/p/100km. when im just coasting there is no drag at all, it does'nt smell of fuel.
Can anyone help. I live in the Northern Territory of Australia and no one wants to go anywhere near it.
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