So I have a 95 celica gt 2.2l na and it has started backfiring pretty badly in lower rpms and especially under load. So I searched around and it seems that the dizzy coil is the problem. So my question is what exactly is involved in changing a coil? Is it as simple as pulling out the dizzy and just a couple a bolt to change it? I want to be sure i know what im up against when i do it since it is my currnt dd.
Thanks for any help
Steven

before you do anything, take a sharpie, make a nice defined mark from the head to the dizzy. then, remove the two 12mm bolts on the top and bottom of the dizzy. unplug the two connectors and remove the dizzy.once you get it out remove the three 8mm bolts holding the cap on. then remove the rotor and heatshield(carefully). remove the two nuts holding the wires in place on the positive and negative of the coil. and finalle remove the four phillips screws that hold the coil in place.the dissy only goes back in one way. pretty easy. i'd also remove the air filter box for a little extra room.

thanks for the help, could i leave the dizzy in place and just remove the cap? and just work with it still mounted to the engine?

okay so i just took the cap off to see what up under there and it looks like the contact points on the cap are just way to corroded... could it be that i just need a new cap? or is this kind of wear average. i have a pic here of under the cap and the thing underneath.
http://i828.photobucket.com/albums/zz209/S...ki/IMG_3936.jpg
http://i828.photobucket.com/albums/zz209/S...ki/IMG_3937.jpg
http://i828.photobucket.com/albums/zz209/S...ki/IMG_3939.jpg

Temporary fix: sand the points with 320 grit sand paper til shiny but not too much

but I would recommend replacing the cap. If you still hve the same problem afterwards then work on the coil.

You could try sanding it down, and if it works, try replacing the cap and rotor (should be relatively inexpensive).

change your cap and rotor, wires, and plugs. and doublecheck your sequence.

>

X2, a lot of times this usually solves the problem, only time you need to change the coil is when your car won't start or it dies on you while your driving.

okay so i sanded down the points a bit and this seems to have basically fixed very rare is it backfiring on me. im going to go buy a new cap altogether tho today thanks for the help. however when it did putter the oil light would flash... it doesnt really do that as prominant now but still a bit... should the new cap solve this problem to? (i just got an oil change so its not that )