Join Date: Aug 2008
Location: San Francisco Bay Area
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The 4.7 uses Iridium spark plugs. I don't know about this one but some engines are extremely finicky about plugs.
I had a similar thing, truck went into 'limp mode' for a while before coming back to normal. Transmission sensor.....
Any mechanic with the proper scanner can bring up information on the function of each spark plug as the engine runs. The good old days of pulling a plug wire are as far gone as adjusting points. Most of the computer-run stuff on today's vehicles require a computer to diagnose what really is wrong so you don't end up replacing a bunch of working parts while playing hit or miss.
Why do I say this? I spent ten years keeping a safari operation on the roads, such as they were, and....almost none of what I know from then applies now.
I use and talk about, but don't sell Amsoil.
2006 Tundra replaced a
98 Dakota 3.9 automatic, long bed.
Retired with broken A/C, July 2008.
On original engine and transmission.
+Everybody knows something you don't know.
+Truth does not need to be 'balanced' and it ain't caused by voting or consensus or polls or yelling louder or silencing someone.
+Artists prove truth can be in forms you don't understand.