System lean?? what else to try?
#11
The absence of drivability problems make this a tough one. If you have access to a scanner, hook it up and watch the short-term fuel trim values at various RPMs. An air leak will cause the short-term fuel trim value to be higher at lower RPMs (think constant leak vs. varying total flow). Otherwise, suspect a defective MAF sensor.
#13
Hi again Bill,
How many miles are on this truck? Remember, this guy is bumpin' four years old.
Yes, both codes are screamin' lean. Be it either from lack of fuel or abundance of air.
Is your idle speed "normal"?
Allan
How many miles are on this truck? Remember, this guy is bumpin' four years old.
Yes, both codes are screamin' lean. Be it either from lack of fuel or abundance of air.
Is your idle speed "normal"?
Allan
#15
The truck is high mileage at 120K. It seems to be normal idle speed. It idles right around 600rpm and smooth. Would one of the parts store have a way to check my fuel pressure or would i need to stop the a garage for that. Im sure i have no way to check it.
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