2005 Nissan Titan Chugs on Acceleration
I have a 2005 Nissan Titan SE with 5.6 V8 and Off Road Package. When I accelerate it will chug and almost die on me, but if I ease into the acceleration it will sometimes accelerate just fine. It has done it for 3 days and has not thrown a code yet. I brought it into a service place and they initially thought it was a catalytic converter but the exhaust has great throughput.
Sounds fuel related. How is the fuel pressure and flow?
That was the mechanics first thought too but if it has bad fuel pressure (high or low), wouldn't that throw a code?
Not really, I have had a lot of rigs brought in that run badly from low pressure or a badly plugged filter and never a check light. You are right about it should set a lean code but none I have checked never did.
It does sound like it May not be getting enough fuel. Somebody with a fuel gauge should be able to drive it (with fuel gauge connected) and see if there is continuous good fuel pressure. Another possible cause of low fuel delivery is a faulty/dirty mass air flow sensor. if it is dirty, you may be able to clean it and notice an improvement.
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