charley240

iTrader: (6)

the 3 in the rear are plug wires, you cannot just swap the packs and plug wires around, for one because of firing orders, and two, youll have an even harder time tapping a new screw for the rear bank. lol
Charley

hoonami

okay guys.... took me hour and half taking off lots of parts(don't know the name) and finally took all 6 coils out(left the plugs for tomorrow). Now i already have ohm meter, how do i check to see if these coils are good? anyone with pictures that can explain to me??

thanks,
Tae

charley240

iTrader: (6)

you shouldve just swapped coil packs from the start, for example, move coil from cyl2 to cyl4 and get it retested, but the cel should be reset, so that when you start the car, the cel will throw a new code.
gl
Charley

hoonami

so it's okay to switch cyl1,3,5 coils with cyl2,4,6? it was originally throwing 1,3,5 misfire so if i switch coils and code comes up 2,4,6 than it's the coils right? but what if it still throws the same 1,3,5? and anyway to test out the coils itself??

thanks

charley240

iTrader: (6)

hmm... sorry i just now read the codes that were thrown out.
when i had issues with my coil packs, it would throw the code for the front banks, ie 2,4,6.
but youre getting them in the back bank. if it were me, id get some cheap plugs and gap them correctly, then replace all 6 spark plugs.
btw, i dont think youre understanding here
cylinders 2,4,6 have the coil pack right above them.
cylinders 1,3,5 have the spark plug wires that get their signal from the coil packs on the front bank.
cylinder 1's signal is sent from cylinder 2's coil
cylinder 3's signal is sent from cylinder 4's coil
and cylinder 5's signal is sent from cylinder 6's coil.
you cant just swap coil pack around, because the rear bank(spark plug wires) arent meant to use the coil pack.

you probably did get each code twice, that means its a major issue, same thing i got when i got p0304, it threw it twice.

so heres what i would do, clear cel by disconnecting battery for a few mins.
then throw in new plugs, and drive around(or to autozone/wherever they do free scanning) and by that time the code should have popped up again. then have them scan again. if the same codes come up, its probably the coil packs. the reason i say this method first, is because youll spend roughly $30 for new plugs. where as 1 (one) coil pack is going to run anywhere from $70-110.
charley

hoonami

thanks charley, i just replaced all 6 plugs with genuine toyota denso iridium plugs and my coils are the same front/back so i switched front ones with rear ones. drove around 5 minutes and code are back on and car does drive rough again after code came back, i am planning on taking it to autozone first thing in the morning to see what codes are showing now....

hoonami

Got the codes and it just got worse....
P0300
P0301
P0302
P0303
P0304
P0305
P0171
P1130
I'm so lost.... what should i do?

JSM1284

The 02 1mz has 6 seperate coils, it does not use the 3 coil, 3 wire setup.

JSM1284

Did you reset the computer before you had it re-tested?

charley240

iTrader: (6)

k, sorry man, i feel like a tard. i was thinking 1mz 3rd gen.
well, then, i say try the coil packs i guess. i couldnt possibly see all your coil packs but one going out.
ask the older guys at autozone.
charley

hoonami

reset? you mean disconnecting the battery hooking it back up? yeah i did that and light went out and came back on about 5mins later... i don't understand how 3 were bad and now 5 are bad after changing just spark plugs... and i used genuine toyota parts(denso iridium) too....

garvos

one way you can test the coil is to take the coil out lay it on the engine with the wire still connected get a old spark plug stick it in the coil start the engine and see if u see spark from the plug.if no spark u have a bad coil.do the front bank first,if all three work swap the front to the rear and test the rear coil .you should find the bad coil.

hoonami

okay let's say if i am testing cyl 1 coil, do i leave other 5 coils alone(leave it inside cylinder) and just pull out cyl 1? and do i leave new plug inside cyl 1? and use old plug into coil that is pulled out? and how long do you crank it(1sec, 3sec, 5sec?) and if sparks coil is good right? and move on with next coils? this whole thing is driving me crazy

thanks
Tae

llcoolpass

this is so confusing. you test the coils. if they fail even a little, replace.