trouble codes! need help

[rollinlarge]

ok this is my wifes car. she has put about 25k on it this year (trip to cali and back)

well semi recently i changed the front pads, turned the rotors, new fuel filter.

well all of sudden today she is driving home and her car starts idling funny and stalling etc.

these are the codes

P0300-random multiple cylinder misfire
P0303-cylinder 3 misfire detected
P0306-cylinder 6 misfire detected.

it all of a sudden just happened yesterday night.


what could it be?!!? any help is greatly appreciated!!!

thanks

99 toyota solara, 3.0, V6, auto 143k (well maintained and taken care of)

[Qslim]

Originally Posted by rollinlarge

ok this is my wifes car. she has put about 25k on it this year (trip to cali and back)

well semi recently i changed the front pads, turned the rotors, new fuel filter.

well all of sudden today she is driving home and her car starts idling funny and stalling etc.

these are the codes

P0300-random multiple cylinder misfire
P0303-cylinder 3 misfire detected
P0306-cylinder 6 misfire detected.

it all of a sudden just happened yesterday night.


what could it be?!!? any help is greatly appreciated!!!

thanks

99 toyota solara, 3.0, V6, auto 143k (well maintained and taken care of)

Look to the ignition coils. The three coils in the front provide spark for the cylinder they sit on top of as well as a cylinder on the opposite bank connected via a high tension wire. The front coils sit on cylinder #s 2, 4, and 6, so trace the wire from the coil on 6 over to the other side and see where it goes. If it ends up on cyl 3, you have a good idea that the coil may be at fault.

Another strategy you can take is to clear the codes, swap coils, and take it for a drive to see if the code moves with the coil.

[rollinlarge]

Originally Posted by Qslim

Look to the ignition coils. The three coils in the front provide spark for the cylinder they sit on top of as well as a cylinder on the opposite bank connected via a high tension wire. The front coils sit on cylinder #s 2, 4, and 6, so trace the wire from the coil on 6 over to the other side and see where it goes. If it ends up on cyl 3, you have a good idea that the coil may be at fault.

Another strategy you can take is to clear the codes, swap coils, and take it for a drive to see if the code moves with the coil.

so where are they?
i looked online and some autoparts sites say it has 3 coils and some say 6?

is it direct ignition?, distributorless?

because its being looked at right now and i imagine your right

[rollinlarge]

fixed
damn coil like i thoguht and everybody said!
thxs

[rone_305]

its the spark plugs....make sure they are connected and they are not loose

[rollinlarge]

Originally Posted by rone_305

its the spark plugs....make sure they are connected and they are not loose

pls read above, had the coil replaced that was the problem

[rone_305]

my bad

[bonecrusher]

Originally Posted by rone_305

my bad

hey np!

[glicorish]

I have a 99 Solara and I started getting similar codes most of the P300's codes are related. In my case I was also getting a foul smell, rotten eggs, in the car. Turn out to be O2 sensor after the catalysis. A user manual and a mulitmeter make life easy when you have codes to work with. The manual outlines the steps for trobleshooting each code and provide specifications for each sensor.