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I can now say without any doubt that e-3 plugs are not worth the package they come in.
I have a 03 Ranger Edge 3.0L 67k miles on it, bought it used about 6 months ago, the truck drove great for 2 months then started developing a rough idle and lack of power which turned out the be cloged cats (4 out of 5 were clogged up and yes it had 5 cats from the factory) anyways $1,500 later the truck was back to running fine.
Two days ago I decided to give it a tune up (new wires and plugs), I had seen the E-3 plugs advertised to add better fuel economy so i figgured I would give them a try. The truck ran geart afterwards sitting in the driveway so i decided to take it for a ride, drove about 5 miles came to a stop sign and the truck all of a sudden started running really bad and the engine light came on. There was an Auto Zone across the street so I stoped and had them pull the codes 1.P0305 2.P0306 3.P0316. So next day I take it to a local shop and had it hooked to a real diagnostic machine, it pulled the same codes. They then tested the coil, looked for air leaks, did a compression check (which was really good at 95 on each cyclinder), check camshaft and crankshaft position sensors which was all fine, they just wasn't able to track down the miss-fire. He did tell me that there was a software update and only a dealership cold load it at a cost of $89 bucks and there was no way of telling what version software it had even through the vin number, said the only way to be sure was to flash it with the latest version. He also said 3.0l had valve and head problems that was noted and i might be looking at $1400-$1700 head and valve job. But he suggested I take it to the dealer and have the software update applied and see if that made a difference. So on the way home I stoped and picked up some Motorcraft plugs threw them in and WA-LA, smooth as silk, missfires gone, check engine lights off, and all is good in the world now. Use Motorcraft when possible and dont believe all the E-3's product hype ! ! !
I have a 03 Ranger Edge 3.0L 67k miles on it, bought it used about 6 months ago, the truck drove great for 2 months then started developing a rough idle and lack of power which turned out the be cloged cats (4 out of 5 were clogged up and yes it had 5 cats from the factory) anyways $1,500 later the truck was back to running fine.
Two days ago I decided to give it a tune up (new wires and plugs), I had seen the E-3 plugs advertised to add better fuel economy so i figgured I would give them a try. The truck ran geart afterwards sitting in the driveway so i decided to take it for a ride, drove about 5 miles came to a stop sign and the truck all of a sudden started running really bad and the engine light came on. There was an Auto Zone across the street so I stoped and had them pull the codes 1.P0305 2.P0306 3.P0316. So next day I take it to a local shop and had it hooked to a real diagnostic machine, it pulled the same codes. They then tested the coil, looked for air leaks, did a compression check (which was really good at 95 on each cyclinder), check camshaft and crankshaft position sensors which was all fine, they just wasn't able to track down the miss-fire. He did tell me that there was a software update and only a dealership cold load it at a cost of $89 bucks and there was no way of telling what version software it had even through the vin number, said the only way to be sure was to flash it with the latest version. He also said 3.0l had valve and head problems that was noted and i might be looking at $1400-$1700 head and valve job. But he suggested I take it to the dealer and have the software update applied and see if that made a difference. So on the way home I stoped and picked up some Motorcraft plugs threw them in and WA-LA, smooth as silk, missfires gone, check engine lights off, and all is good in the world now. Use Motorcraft when possible and dont believe all the E-3's product hype ! ! !
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