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As well as selling our unique key finder system, when we fix something or discover a solution, we like to share -
 here is another page to help out. DJM.  All material here - Copyright (C) 2009 Melbourne Designs, LLC.
OK, so it's also a cheap plug to advertise FOFA - please forgive us!  

Use at your own risk - we bear no responsibility for any injury or damage caused by the use of this information of how to fix your Toyota
Remember -  Be careful with power tools! Get help if you need it!

Are you getting Toyota Sienna Misfire Code (s)
P0300 P0301 P0302 P0303 P0304 P0305 P0306 ?
Other years 1999, 2002, 2003, 2004, 2005  unknown if applicable - anyone?)

For help with Toyota Door Handle replacement click here

For help with Toyota Sienna Knock Sensors click here 

For help with Toyota Sienna Oxygen Sensors click here. 

For help with Toyota Sienna Evap Codes P0446 P0440 P0441 P0442

Read my comment on our engine overhaul, sludge and problems with www.oilgelsettlement.com

Read the Story of our Toyota Sludged Engine Repair.

For help programming your remote door lock fob / keyfob

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The engines starts pulling back and vibrating, then the dreaded CHECK ENGINE light starts flashing! It seems to be worse under load.
Water in the gas? Maybe.  Will it go away on it's own? Probably Not.

You read / get the codes read and they are either a single P0300 or P0301 P0302 P0303 P0304 P0305 P0306 or any combination.
The book says Cylinder Misfire on # X. Now what?

The kid's college money seems to be evaporating right in front of you - this is going to cost!

WRONG

There is a cheap possibility - it happened to our van on a 300M trip to Fredericksburg (wonderful place BTW)
Ours said "P0302 - Misfire on Cylinder 2"

So which cylinder is which? Here's a picture with the cylinders numbered.

So we were in luck - the bad one was on the front! Seemed too good to be true!
We removed the 10mm bolt that held the #2 igniter coil.

 


A Toyota igniter coil thing.





We disconnected the plug at the top to allow enough room to pull the igniter coil out of the engine.
Then we removed the plug. There was a LINE of something that went from the connector to the base of the plug!



 This is where our spark had been grounding out rather than igniting the mixture in cylinder 2!

 We stuck in a new plug, cleaned the inside of the igniter shaft (in case carbon had built up inside) then
  re- assembled. Cleared the codes (disconnect battery for 15min if you don't have a reader that can
  erase)

SMOOOOOOOOOTH running! Cost of fix - about $3 for a new plug!

Did not find a bad plug? Try swapping the Igniters around (they are all the same after all)
See if the code changes (don't forget to clear the codes between tests)
If still no luck, try swapping injectors around and retest.
If codes seem random, perhaps fuel contamination or low fuel pressure.

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We will add your comments here (no full names or email addresses of course!)

For help with Toyota Door Handle replacement click here

For help with Toyota Sienna Knock Sensors click here 

For help with Toyota Sienna Oxygen Sensors click here. 

For help with Toyota Sienna Misfire Codes click here. 

For help with Toyota Sienna Evap Codes P0446 P0440 P0441 P0442

Read my comment on our engine overhaul, sludge and problems with www.oilgelsettlement.com

Read the Story of our Toyota Sludged Engine Repair.

For help programming your remote door lock fob / keyfob