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Toyota Repair/4Runner misses after tune up


What could be causing my 99 3.4 4Runner to keep missing once it warms up after changing the plugs and wires? I just bought it and the previous owner put single prong plugs and the plug for cylinder 3 was stripped with an insert in it. I re-tapped the hole and put NGK dual prong plugs all around, changed the wires, and replaced the coil pack on cylinder 3. I'm almost broke what could it be?

A misfire will usually set a diagnostic trouble code in the computer on this wngine, please take the truck to an Autozone, Advance Auto or similar partds store, they will help you get the codes that are stored at no charge, I will need the specific code numbers, please reply with them once you have that information and I can help.

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Ted Ritter


I have more than 28 years experience as toyota technician, I will be able to answer most questions related to the Toyota product line up to the present year models,I am located in the US but welcome questions from other regions of the world. When asking a question please provide specific information: year,model, engine,transmission information. Provide as much information as possible including a brief repair history if possible. I have been a volunteer here for more ten years an have answered over 16,000 questions helping Toyota owners with their problems and save thousands of dollars without any compensation, some of my answers are published on many other websites including google and various automotive forums. DONATIONS ARE VERY MUCH APPRECIATED, IF YOU HAVE RECIEVED HELPFUL INFORMATION PLEASE MAKE A DONATION. AS OF TODAY (JULY 22, 2014) ALL REQUESTED GRAPHICS, ILLUSTRATIONS, DIAGRAMS, PHOTOS, WILL REQUIRE THE MINUMUM DONATION UP FRONT.


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