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I have a 2007 Camry v6 with a 150k..my check engine light…

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I have a 2007 Camry...
I have a 2007 Camry v6 with a 150k..my check engine light came on brought it to my mechanic and said ignition coil 6 misfired..so I had him replace all 6 coils and spark plugs. Drove the car for a day and check engine light came on again saying misfire in 6. Replaced all the fuel injectors and number 6 coil..check engine light came on again and still says misfire in #6
Submitted: 8 months ago.Category: Toyota
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Answered in 3 minutes by:
10/21/2017
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago
Ted Ritter
Ted Ritter, Toyota Master Tech
Category: Toyota
Satisfied Customers: 4,660
Experience: Toyota Master Tech, ASE Certified
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Thanks for posting

After picking the car up form the mechanic did it run normally until the next day when this happened again?

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Customer reply replied 8 months ago
It ran fine for a day, then light came on again
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

Thanks for the reply

Does it idle ok now or idle rough?

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Customer reply replied 8 months ago
Idles rough and sputters on accleration
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

Are you going back to the shop/same mechanic again?, I have couple of suggestions of things to check.

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Customer reply replied 8 months ago
Im done with the mechanic..suggestions please
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

No problem, here is what should be checked:

The wiring harness for the injectors as well as the injector connector for broken /loose wires to the connector, the wiring insulation as well. If that's ok then the injector pulse voltage using a special test light plugged into the connector. the injector is turned on and off by a signal from the computer, it may be losing this signal and the injector won't cycle. If there is a problem of no signal voltage there may be a problem with the wiring or the computer itself has the problem, that's not usually the case but it's possible.

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Customer reply replied 8 months ago
My mechanic said the blue wire on the connector that goes into the ignition coil #6 voltage should be 4.9 goes back and forth form 4.9 to 0 if that makes sense
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

I'll have to check a wiring diagram and get back to you in a few minutes.

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Customer reply replied 8 months ago
Okay
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

All coils were replaced? Do you have the exact code number for the misfire?

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Customer reply replied 8 months ago
P0306
Customer reply replied 8 months ago
Could it be a bad ECM?
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

Thanks that's the correct code for the #6 cylinder, there should be onw qire (red) with constant 12 volts, the white/black is ground, the other two are signal wires from the computer and the voltage will fluctuate while the engine is running.

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Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

yes it could be that but I would still like to confirm injector pulse voltage. The code is not for a bad coil/igniter, a bad igniter circuit would have a different code specific for the igniter which is part of the coil.

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Customer reply replied 8 months ago
Can i get a single connector harness for coil 6? Would that dix it
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

Is there a broken wire on that connector?

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Customer reply replied 8 months ago
The connector clip is broken that locks into the ignition coil but i have it zip tied on...it doesnt move..my mechanic had said that one of the wires wasnt putting out the voltage it needed...would a reflash fix it?
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

Toyota has no reflash procedures for this model, it is normally done only when a service bulletin is issued for a specific problem. In other words only when the factory has authorized a re flash with specific instructions.

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Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

I doubt that Toyota has just the connector, you can check with the parts department, they usually replace the engine wire look part for the coils.

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Customer reply replied 8 months ago
What about resetting the pcm doing it by diconnecting the negative on the battery
Toyota Mechanic: Ted Ritter, Toyota Master Tech replied 8 months ago

Doing that will clear the code, I assume the mechanic did that after replacing the coils/plugs, it will just turn on again with the same problem, it may stay off for a while.

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