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New To This! Misfires! Please Help!


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I have my 2002 IS300 5 speed
car has been running great %100 stock
recently It started misfiring real bad,

Codes that have come up are as follows
P0301 Cylinder #1 — Misfire Detected
P0302 Cylinder #2 — Misfire Detected
P0303 Cylinder #3 — Misfire Detected
P0304 Cylinder #4 — Misfire Detected
P0305 Cylinder #5 — Misfire Detected
P0306 Cylinder #6 — Misfire Detected
P0300 Random/Multiple Cylinder Misfire Detected

There was also a bank 1 o2 sensor upper CEL as well but i dont remember the code

With that being said i have replaced common items that can cause this.
Sparkplugs with OE NGK Iridium
Sparkplug wires NGK
Coil packs OEM
bank 1 o2 sensor, same denso as OEM

With all this the car still throws the same codes and im at a loss,
When car is cold it will start run just fine until it warms up,
As soon as it warms up all this starts to happen.

Any help on this would be greatly appreciated! Thank you in advance!!

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A quick look as FSM says you should do this next

5. INSPECT CAMSHAFT POSITION SENSOR

(a) Disconnect the sensor connector.

(b) Using an ohmmeter, measure the resistance between terminals.

Resistance:

Cold 835 - 1,400 W

Hot 1,060 - 1,645 W

If the resistance is not as specified, replace the sensor.

© Reconnect the camshaft position sensor connector.

6. INSPECT CRANKSHAFT POSITION SENSOR

(a) Disconnect the sensor connector.

(b) Remove the bolt holding the connector bracket to the water

pump.

© Using an ohmmeter, measure the resistance between terminals.

Resistance:

Cold 1,630 - 2,740 W

Hot 2,065 - 3,225 W

If the resistance is not as specified, replace the sensor.

(d) Reinstall the bolt holding the connector bracket to the water

pump.

edited to try and get back readable format.

(e) Reconnect the sensor connector.

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When I clear code then start the car, the CEL comes on immediately (cold or hot)

but when the car is started from cold it will run fine (even with CEL on) until it warms up

I will get my meter out and check those sensors tomorrow, :) hopefully i just need to replace one, clear codes, and be on my merry way

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ok after pulling off several sensors checking them putting them back on, the sensors checked fine all in good standing.

After putting them back on a miracle code popped up,

its a P0011

Intake camshaft position timing

Over-Advanced (bank 1)

I tried looking this up but all I can find is information all the Crank position sensor. Are these the same thing?

Can someone point me in the right direction?

Also downloading a FSM isnt as easy as you mention it as the link on this forum is dead, along with (myis) and clublexus (404 not found)

but with that being said I may just be literally computer compliant lol

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