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.
I have been experiencing this issue. extreme loss of power from standstill say from a red light. Or driving 65-70 mph and suddenly feels like someone has hit me from the rear, then gradual loss of speed and power. if I stop and turn the engine off for a few seconds, all is goo for several miles then might do the same from a standstill again. same thing, turn off engine and it may clear for a hundred miles. It has stopped for over two weeks now and running normal, very good acceleration and runs normal. the only thing I have changed is the ignition key. The old key would need to be turned to start several times sometimes because all I could hear was a click. That has gone away also. I have hade similar issues in the past with bad acceleration , bad coil, MAF, catalytics , fuel issues, ALL of them set a service engine code because they affect emissions. A bad battery or corroded connections will affect performance. The key question mystifies me unless there is a loss of programming or a program malfunction in the old key.
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