I have a 2005 Acura TL my car drives very good when it's warm but in the morning when I drive it soon as I put the key in crank the engine the car runs really rough soon as the idle starts dropping then you runs rough ER it's misfiring in all Pistons and the engine light sometimes starts flashing but now the engine light is on I got a check. Bye buddy he checked it with a computer thing told me that is giving code P 30 something that means that all the Pistons are misfiring but soon as the car is warm it drives really good I hope somebody can help me with this problem or anybody have the same problem

 

Bro.... I couldn't understand half the post. Please spell check, grammar check, and read it before reposting. Get all the proper information like the FULL code not just half of it.

 

Is this guy drunk posting or what? I could not understand even the thread title lmao.

 

Misfire when cold, runs smooth when warm. CEL is on, didn't get the full code. And I like to drink heavily before I post.

 

I think we need the OP to warm up a little bit.

Kevin do you have any history with the car was it just purchased or anything recently done to it?

 

Sorry about my writing guys I'm talking to the phone and it's writing it for me my problem with my car is I have a 2005 Acura TL with hundred eleven thousand on it I change spark plugs coils clean the EGR port got a new EGR valve and I clean my intake manifold and my throttle body the problem with this car is when is cold when I start the car it runs rough it's misfiring in all cylinders but when it warms up it gets much better and I can drive it around then you don't even notice the misfire anymore but when I checked it it's giving me a code P0 300 so that means is misfiring in all cylinders and it's driving me crazy I spent too much money in this already please anybody can help me or they had the same problem I really do need help

 

I don't know the history of the car just bought it like a month ago but this guy gave lots of receipts receipts he did the timing belt coil spark plug pretty much everything on the engine myself I did the EGR port got a new EGR valve I got new spark plugs coils clean the manifold clean the throttle body and I still get the same problem when I started is running rough when it warms up drives better is giving me a code P0 300 it's misfiring all cylinders please if anybody can help me

 

You either need to stop using voice transcribing, or learn the syntax to get punctuation....it is nearly impossible to read the big long sentences.

Do you have new plugs or new coils? I'm not up too much on the multi-misfire issues....but from what I kind of recall from reading on here, plugs, coils, EGR, or ECM are the typical culprits and I think you have covered a few of them already.

 

I even change that ECU computer

I cannot figure out what's wrong with this car now when I'm driving and when I stop at a light I can tell that is misfiring but when I'm driving it's fine

I changed the plugs and the spark plugs new throttle body I clean the manifold the EGR port new gaskets and still doing it I'm kind of thinking could be the valves gasket

 

So...the previous guy installed timing belt himself? and it's misfiring in all cylinders you say? I'd like to solve the puzzle.

 

My 04 TL idles bad when its cold too and ive been told running some seafoam through the intake might help. Does anyone know or have experience with this to know if it helps?

 

The thermostat can effect the car running ruff when cold, until the car warms up. Also coolant tubes run up the the air intake hose, where the hose connects to the mass airflow sensor and could have something to do with your problem.

 

First of all, is the Engine Light still on even after the engine warms up and driving?
If it is Yes, could you check your Power Steering fluid reservoir and see if it's empty or full? Is the fluid leaking? Check that and let me know.