Cylinder Misfire P0304, P0300, Engine Rattle, Loss of Power - Toyota Sienna Forum - siennachat.com
 
LinkBack Thread Tools
post #1 of 8 (permalink) Old 07-07-2009, 11:19 AM Thread Starter
Junior Member
 
Join Date: Mar 2009
Posts: 30
Cylinder Misfire P0304, P0300, Engine Rattle, Loss of Power

It's a 2007 Limited AWD w/ 38K miles. A few days ago I noticed a lack of power on hard acceleration. I also noticed a faint rattling or clicking noise from the engine under acceleration from a standstill, even after the engine is at operating temp. Sounded maybe like valve or lifter noise. Checked fluid levels and everything looks fine. Oil cap looks clean. Oil is dark but nothing noteworthy (synthetic w/ 8K miles on it) Then today it threw a CEL, P0304 (cylinder 4 misfire) and P0300 (multiple random cylinder misfire).

Anybody else experience cylinder misfire problems?
smackboy1 is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 07-07-2009, 05:47 PM
Supporting Member
 
Join Date: Feb 2009
Posts: 1,316
Re: Cylinder Misfire P0304, P0300, Engine Rattle, Loss of Power

A couple things comes to mind. Don't worry about the P0300 (this is just telling you have a misfire)

Now #4 is in the front(yippie). First i would remove the plastic cover and see if any "mice" or animal has gotten up there and chewed some wiring(#4 is the middle cylinder if you did not know) Now if everthing "looks" good try swapping 2 coils around and see if your code changes(swap coil 4+6) if the code comes up as P0306 then you have a bad coil.

Let us know what is going on.

ROB

2004 CE
AIR LIFT '1000'
OVERHEAD 'DEALER' DVD
'HITCH CITY' 2' HITCH
Support 'SIENNACHAT' HERE

Best Auto Insurance | Auto Protection Today | FREE Trade-In Quote
robo5 is offline  
post #3 of 8 (permalink) Old 07-08-2009, 06:26 PM Thread Starter
Junior Member
 
Join Date: Mar 2009
Posts: 30
Re: Cylinder Misfire P0304, P0300, Engine Rattle, Loss of Power

No sorry, but thanks for playing.

The correct question is, "What is failure of the cam position sensors."

For playing our game show today, Toyota will be taking off the head and replacing a bunch of stuff that sounds like it will take a long time and cost lots of $$$. BTW, did I mention Toyota will be paying for all this!?
smackboy1 is offline  
post #4 of 8 (permalink) Old 07-08-2009, 06:36 PM
Supporting Member
 
Join Date: Feb 2009
Posts: 1,316
Re: Cylinder Misfire P0304, P0300, Engine Rattle, Loss of Power

Did I "win" anything?

2004 CE
AIR LIFT '1000'
OVERHEAD 'DEALER' DVD
'HITCH CITY' 2' HITCH
Support 'SIENNACHAT' HERE

Best Auto Insurance | Auto Protection Today | FREE Trade-In Quote
robo5 is offline  
post #5 of 8 (permalink) Old 07-09-2009, 03:41 AM
Supporting Member
 
Join Date: Mar 2009
Posts: 2,166
Re: Cylinder Misfire P0304, P0300, Engine Rattle, Loss of Power

I had a bad camshaft position sensor 1-2x (I forget) in my '96 Nissan Maxima. I was told that it will eventually leave you stranded if you do not get it attended to. In my case, I learned to remove it and clean it (it was actually very easy to do). It was simply a fancy "magnet" and when it got dirty from metal shavings/engine debris it caused the engine to malfunction and the warning lights to come on. Unfortunately, "cleaning it" was only a TEMPORARY fix. It really needed to be replaced. Mine was/were also replaced under warranty....some "not-too-expensive" price for the actual part IIRC.

I do not know if it is different in the Sienna.

YMMV.
Good Luck!! 8)

2004 XLE Ltd FWD Phantom Grey Pearl/Stone // 140K miles
. Pod-Style Running Boards
. OEM Hood Deflector (wimpy-version)
. 'kmead/SeanY' Rear-Wiper Salute
. 'mungpat' DIY Cabin Air Filter $$$-Saver
. Michelin HydroEdge (ex-Yokohama TRZ) ... looking for replacements
. Costco/Kirkland #9 battery
. Longer front wipers
. Britax Frontier 90

20131028
topspy is offline  
post #6 of 8 (permalink) Old 07-09-2009, 06:50 PM
Supporting Member
 
Join Date: Feb 2009
Posts: 1,316
Re: Cylinder Misfire P0304, P0300, Engine Rattle, Loss of Power

There was a TSB on this.

More stuff on the "topic"

http://siennachat.com/forum/index.php/topic,879.0.html

2004 CE
AIR LIFT '1000'
OVERHEAD 'DEALER' DVD
'HITCH CITY' 2' HITCH
Support 'SIENNACHAT' HERE

Best Auto Insurance | Auto Protection Today | FREE Trade-In Quote
robo5 is offline  
post #7 of 8 (permalink) Old 08-02-2010, 03:36 PM
Supporting Member
 
Join Date: Mar 2009
Posts: 497
Re: Cylinder Misfire P0304, P0300, Engine Rattle, Loss of Power

Hey smackboy1, did the dealer end up replacing the engine for you? What was the cause of the scored cylinders? Did this fall under the failed VVT-i TSB?

2007 Sienna LE, Silver shadow pearl, DRL
Sound Insulated with Peel and Seal
MB Quart Rear Separates
Chrome LED Side view mirror covers
Polished SS exhaust tip
glovebox LED light
uluahunter LED lightstrip mod (24 LED rear amber turn signals and 120 LED brake light)
96 LED rear storage light
tbalon is offline  
post #8 of 8 (permalink) Old 10-09-2012, 11:58 PM
Junior Member
 
Join Date: Oct 2012
Posts: 1
Re: Cylinder Misfire P0304, P0300, Engine Rattle, Loss of Power

Had mouse in mine! P0304 was the code, originally I was think O2 sensor, glad I didn't bring it to the dealer!
mcbeefry38 is offline  
Reply

Tags
cylinder, engine, loss, misfire, p0300, p0304, rattle

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Toyota Sienna Forum - siennachat.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome