engine misfire

That is called the coil stem.

will the coil stem cause a misfire?

I really doubt that is the miss fire only at idle?

it miss fire when press on gas pedal sometime. how often do i replace the spark plugs and the coil stem?

The spark plugs should be good for at least 100,000 miles.Thee coil stems last a while there is no change interval for those. You could have a bad coil are there any codes in the computer of the car?

there was a code i forgot what it was. i did not write it down, but it had something to do with the coil stem.

I need the exact code numbers not code descriptions so we can swap coils around to see if the misfire moves to another cylinder with the coil.

i notice the connected end that connect to the coil is broken. it did not have tight fit. is it call a pigtail? can it be replace?

The coil itself of the connector that goes to the coil is broken?

how do i replace the pigtail?

Can you post a picture of what your talking about?Iam still unclear what your talking about.

i don't know how to post a picture i am talking about the electrical wiring that connect to the coils one of those end is defected and need to be replace.

You would have to splice the new one in with some crimp and seal butt connectors.

what i do to splice the new one can you send me a picture showing how to splice it?

the code number is PO301 what the meaning is?

That's cylinder one Miss fire.

how do i fix the Miss fire?

Is it a constant miss fire or a intermittent one?Also depending on what's causing it spark plugs coil compression fuel etc.

it is a intermittent one.

It is a intermittent miss fire. how do i test the coil and spark plugs?

Was that pig tail thatvwss bad to the number one cylinder coil?

the connected end wasn't tight where it connect to the coil and it is tight now i think the pig is good how do i test the coil and spark plugs?

So again was the connector loose on the number one cylinder?Also it's kinda hard to test the coil if it's a intermittent misfire.If it was a constant one we just see if the coil is sparking.So please tell me which cylinder the connector to the coil was loose on?Then we can make are next move.

the connector to the coil was loose on #2 coil i replace new spark plugs and when i disconnect the connector from the coil the connector broke the engine was starting before i did that but now it want start no firing no fuel pump coming on and when i disconnector from the coil the connector broke the engine was starting before but now it want start no firing no fuel pump coming i don't no what could have happen if the connector wires touch each other will that cause the engine not to fire and fuel pump not working? what all i need to check to fix the problem why it not firing and fuel pump not coming on? please help.

So your sure you have no spark you checked for spark?Also you can't her the fuel pump turn on when the key is turned to the Run position?It really makes no sense unless you broke something or blew a fuse or something like that.

yes i check for spark there is no spark, the fuel pump is not coming on when turn the key to run, i check all the fuses under the hood thoses that i seen i didn't find any blown fues, is there another fuse box on this car and where it is locateded? i want to get this car back running. what could i have broke and what i need to check now what all the things that can cause the fuel pump not to work and no spark? do this car have a ignition module on it? what control the fuel pump and the firing system?

engine misses very badly in hot weather. tachometer bounces erratically. cool weather it runs good.last mechanic threw parts at it hoping to get lucky and fix issue but no success. new fuel pump, swapped out computer, new distributor, plugs and wires etc., no change in performance. i think IAC or dirty injectors or mass air flow sensor. what do you think?