Aloha,
Recently had 02 sensors changed and the valve cover gaskets done. New plugs, wires and a belt also at the same time on our Disco 2.
After driving the truck for a bit, I would notice a puffing sound. Seemed to be coming from the bottom of the block. I went ahead and tightened all the bolts on the exhaust manifold. 2 of which we quite loose. Following that the puffing went away and the truck ran smooth.
After a bit more driving, the puffing came back. The code coming up is d2 on the ICarsoft reader. It is saying knock sensor lower. I clear the code the sound goes away and the truck runs smoothly again for a bit. Then the code and the puffing sound return after a short drive.
Any ideas would be helpful on what this may be. Bad Knock Sensor? Bad plugs?
Mahalo,
Dave
Recently had 02 sensors changed and the valve cover gaskets done. New plugs, wires and a belt also at the same time on our Disco 2.
After driving the truck for a bit, I would notice a puffing sound. Seemed to be coming from the bottom of the block. I went ahead and tightened all the bolts on the exhaust manifold. 2 of which we quite loose. Following that the puffing went away and the truck ran smooth.
After a bit more driving, the puffing came back. The code coming up is d2 on the ICarsoft reader. It is saying knock sensor lower. I clear the code the sound goes away and the truck runs smoothly again for a bit. Then the code and the puffing sound return after a short drive.
Any ideas would be helpful on what this may be. Bad Knock Sensor? Bad plugs?
Mahalo,
Dave