Originally Posted by kyamcg

thinhthan, this is what I've learned to do....

With the engine running, pop the hood, and unplug each coil one at a time. Unplug it, and your engine should shake (It will be noticeable) (don't forget to plug each coil in before moving to another cylinder). If you unplug one coil and there is no noticeable difference in how it is idling, you have found the problem. Take the coil off that cylinder, and replace it with a coil from a different cylinder.
Then, try the unplugging method again. If the problem moves with the coil that you moved, then the coil is your problem. If the error is still on the same cylinder, it is your spark plug. Does this make sense? If not, I can make up an example that might help out.
Also, the cylinder may still fire, even with a bad coil. I thought that the coil was fine because it was firing, but it still misfired, so I replaced it and that solved the problem.

Originally Posted by thinhthan

ok so i toke the coils off my old motor and its still misfiring before it was all cylinders but not its 1 4 and 5. do you think my old coils are bad? i really dont wanna buy all new coils. for some reason when my check engine light comes on the tcs comes on too?

Originally Posted by totaledTL

thinhthan- You seem to have a lot of trouble with your car, from wiring to engine- was it a flood damaged car?

Originally Posted by fsttyms1

Huh?? What did you do? did you unplug them like the other guy said (which really doesnt work to diagnose)

Originally Posted by fsttyms1

From the same cyl?

Have you had a compression test?

Originally Posted by fsttyms1

possibly yes.

Originally Posted by friesm2000

maybe try cleaning the egr passages in the manifold

Originally Posted by thinhthan

i did that when i first got the motor

Originally Posted by friesm2000

never saw it mentioned, then here is another thing, did you make absolutly sure to put the gasket back on the CORRECT way, becauase when it is reversed, i think it still seals up the intake manifold, but it blocks all the egr ports, which would be no different then them being blocked

Originally Posted by DC3328

yup, then you should buy your replacement from me

Originally Posted by kyamcg

Hey guys. Today I went and got a 2000 TL as my first car. We got a really good deal because the check engine light was on. So we drove it 130 miles home, and here is the problem...

(We bought the car with 205,000 miles on it. The previous owner bought it August of '08 from a dealer, with all maintenance up to date.)

The Check Engine light is blinking, along with TCS and Maintenance Required lights on. I know that it's time to change the timing belt and water pump, so we will get that done soon. It idles at around 400, and the engine is shaky in low RPMs. Once you get up into higher RPMs (around 3000), it isn't as bad.

But the reader is giving us these errors:
P0301: Cylinder 1 misfire
P0302: Cylinder 2 misfire
P0303: Cylinder 3 misfire
P0304: Cylinder 4 misfire
P0305: Cylinder 5 misfire
P0306: Cylinder 6 misfire
P0300: Random/Multiple Cylinder misfire
P1740: Definition unkown.

the previous owner said that he took it to someone to fix who mentioned some carbon in the engine or something?

I have read on here about replacing the coils, so would the timing belt, water pump, and coils be able to make it run better?

Thanks.