peshkis06

i got these codes,
p0301 cylinder #1 misfire.
p0304 cylinder #4 misfire
p0300 random cylinder misfire
p0305 cylinder #5 misfire
my question is, how do i know if it my sparkplug wires or ignition coil? and whats the fastest way to find out?
i recently put in brand new sparkplugs in bout 2000 miles on em. so i dont think its them.
and one more p0118 coolant temp high? my engine never over heats, always right in the middle
thanks in advance!

4Driver4

No codes before the plug change? Are you using the right plugs? What year is the car?

peshkis06

its a 99 2.8 v6. 30 valve. quatro.
i dont understand ur q, are my spark plugs rigwht?. i got them at advanced auto parts
and know ive never had any codes before or after spark plug change. ive had few misfires on cold engine like bad fuel filter or something and i changed it and still didnt fix it, and those misfires were like 10 secs long and only cold engine then kept getting worse like even when engine is warm and all but the cel never came on, so idk,, what u think?

4Driver4

This might be the problem.

I'd check the plug wire to be sure that you didn't damage them. There are tons of great vendors on this forum who sell quality parts. I have very little faith in the chain stores.

peshkis06

thanks alot! ill get back to u on this one see what turns up