Terrible fuel mileage. 2007 2500 HD Classic 6.0/L
February 13th, 2022, 1:50 PM
#1
Terrible fuel mileage. 2007 2500 HD Classic 6.0/L
Good day
I'm getting terrible gas mileage on my truck. I'm talking about roughly 6MPG in the city. I recently replaced my Manifold pressure sensor due to a -49F cold snap. I run a Sceptre cold air filter, which I just cleaned. It never was this bad before. No codes are showing currently.
Truck has 127k miles on it.
My Mass Air Flow Rate is 11.85g/s at idle.
O2 Bank 1 sensor 1 = 0.825V
O2 Bank 2 sensor 1 = 0.805V
O2 Bank 2 sensor 2 = 0.435V
I have no idea if those O2 voltages are any good or not, lol.
Plugs and wires are less than 2 years old. Truck seems to run fine. Lots of power, idle seems OK. Engine is super quiet.
What else could I be checking? Thanks
I'm getting terrible gas mileage on my truck. I'm talking about roughly 6MPG in the city. I recently replaced my Manifold pressure sensor due to a -49F cold snap. I run a Sceptre cold air filter, which I just cleaned. It never was this bad before. No codes are showing currently.
Truck has 127k miles on it.
My Mass Air Flow Rate is 11.85g/s at idle.
O2 Bank 1 sensor 1 = 0.825V
O2 Bank 2 sensor 1 = 0.805V
O2 Bank 2 sensor 2 = 0.435V
I have no idea if those O2 voltages are any good or not, lol.
Plugs and wires are less than 2 years old. Truck seems to run fine. Lots of power, idle seems OK. Engine is super quiet.
What else could I be checking? Thanks
Last edited by snipez; February 13th, 2022 at 2:14 PM.
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