Madmat666

Misfire cyl 3 and 4 mdx 2013 Wen worm and ok Wen i unplug temp sensor

justnspace

iTrader: (1)

trouble shoot coil packs, troubleshoot spark plugs.

Madmat666

i interchange the sparplug-coil and the injector i change the intake gasket

dzionny_dzionassi

So any CEL'S ?

Madmat666

???

thoiboi

CEL: check engine light.


also please spellcheck and make sure you post proper english so we don't have to try and piece together what you're trying to say to help you.

Madmat666

my engine has misfire with cyl # 3 and 4. I have interchanged the coils the spark plugs and the injectors.When I start my engine it runs well for 30sec it starts to rock and when I unplug the temperature sensor it is fine.and the code who went out p0303 p0304 p0300

Madmat666

I hope you can help me not just take me back

csmeance

have you done a valve adjustment? also do you have access to scanner that does real time data? The coolant sensor might be giving invalid data (-40F or something) coolant temp while the others are right. A wrong reading can cause the engine to misfire because it injects fuel in relation to engine temp. Try changing the coolant temp sensor that isn't reading right.

Madmat666

Honda say The valve adjustment is ok.I changed the temperature probe, nothing changed.i have a good scanner but im not a expert whit it

Madmat666

After all the tests possible I changed the computer and the problem is solved

Carpayment4life

You mentioned that Honda said the valves were okay and didn't need adjusting. You solved your misfire code issues, with a new computer.
Did Honda do that work and did they install a new or a used computer?

Madmat666

No they check the codes and erase and check. They call and say hits worm canes and all the code needs to be fixed. I told him not to touch it and I went to get it. Real beginners, I thought I save time by bringing it to the dealer and not -200 $ 🤬