I was driving up an incline with myself, and two other 200lb guys, and all our camping gear inside (no room for any more stuff), at around 65mpg at 2500rpm, when the engine stuttered, and the check eng. light came on. It then flashed a few times, and stayed on, a process it has repeated several times. I took it to my local auto place, and got the codes P0300, p0303, p0305, and p0306. The guy there said that since it's 3 out of the 6 cylinders, that maybe it's a bad ignition coil. Any help?
SOURCE: Can't pass smog! OBD codes P0303 & P0306, what's my best bet?
SINCE RECOMMENDED TO CHAGE THE PLUGS, WIRES, AND COILS? HAVE YOU DONE SO? OR EVER?
SOURCE: obd codes p0300 p0301 p0303 p0305 p0401
P0401 Exhaust Gas Recirculation Insufficient Flow Detected
P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0305 Cylinder 5 Misfire Detected
I would check out the EGR valve. That maybe what is causing all the misfires.
SOURCE: start and diesss
p0456: evap system. sensor failure
p0172: evap system. intake blocked
p0778: exaust valve control. solenoid/ecu faukt
p0300: cylinders misfire. check ht/ignition leads
p0301,303,304,305,306: same ht leads
hope this helps..
SOURCE: 2000 Toyota 4 Runner, 3.4L, 6 Cylinder. Engine
look at the plug wires they are known to bust when old near the boot
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