jmil

Son of a B - Car 2004, Started Running like Crap (Way out of warranty) and CEL Light.
Way over due for plugs and Coils - Replaced all. CEL out for a day or 2 then came back and the car is again sputtering. Loss of Midrange power, Poor idle but wont stall.

Pulled the codes:

P0301
P2070
P0037

Now Reading all the threads:

P0037 is an O2 Sensor - I can take care of that.
P2070 is stuck intake - That looks to be a tough one.
P0301 Misfire

So here is the Final - Can they all be related! So if I fix the P2070 and/or P0301 - Which I need some help with, do we think that will clear the P0301.

BTW - the Codes will reset themselves if I lay OFF the accellerator a few starts (YEa I know Carbon) but once it is reset and I return to normal hard driving it returns.

Help PLease.

Mazurfer

Believe it or not, I want you to go check that all of your plug wires are on and seated well.............on both ends. I would've said coils next, but since you just did that what I wrote would be my first step. 2nd step..................go check all your vacumm lines and airintake connections and nake sure they are all tight.
What mods do you have if any? Then others on here can start to help.

jmil

Actually not a bad Idea - Will do that - Mods None!

Mazurfer

Aaaaah...................also........did you reset the ECU. Actually this car can idle badly for a few drive cycles after the changes you did and even after the ECU reset, but it shouldn't throw a CEL.

jmil

I did Reset the CEL in the past. I Just checked all my vac lines (appear Fine) and reseated all my plug wires. The Spark Plug side seem to be less than Tight, easy to pull off>

While checking the top wires I pulled my Air cleaner and checked the Intake valve. It moves reely and shut itself asesily telling me the Vacume part is working and it isnt stuck.

I am going to reset the CEL now and take it for a spin, Will let you know the results.

jmil

OK Reset the CEL after Checking Wires. Appears to get Rid of the Sputtering and it is pulling much stronger - but I will ride it hard tommorrow an update.

Note - I could NOT reset the CEL. Lite remaind Hard on -

Could be related to the other codes??

If anyone else has an idea - let me know.

Mazurfer

Yeah, the plug wires are notorious for coming off, especially the leading front(I think?). They should actually click just a little bit when you get them on right. Anyway..........it might be worth a shot to stop by Autozone once more and get it read now that you did reset the CEL. I'm sure the misfire will be gone, but it might be interesting to see what it now says. I'll go back and re-read your first post and if nobodty else chimes in, I'll reply back tomorrow with next idea. I have some, but would rather see what the CEL now says.

jmil

Thats what I really want to get done. On my morning Drive it appeared to be running Much Better but it was pouring rain and I could not step on it enough to see if it stuttered. Hopefully I can verify that and then see what codes I have left!.

Thanks for Paying Attention.