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Can someone explain how I am suppose to hook up and ground to test the coils? I'm really confused with the bently manual and from what the original poster said. Am I suppose to remove the coils and then connect the probes to 4 and 15? (outer two, with 1 being in the middle). It says I need to ground it to 2? Very confused and I need help asap. I need my car for today so im heading out to get a multimeter once cdn tire opens (9.99 on sale, motomaster).
ok I figured it out. My stock plugs were at .8-.9 and sometimes jumped to 1+ (but it might have been b/c my prongs were moving around). my Bosch replacements are reading at 1.0 and its consistent, pretty solid on that figure. My bad coils were going around 2.5+ a lot higher.
Positive goes to 15, negative goes to 1 for those ppl who arent sure. And you test it while the car is off, and the coil unlpluged.
my E36 320i does the samething, my car only does that on cold start when temperature hits the middle and the bogging/jerking is gone? why? if it's a coil problem shouldn't be worse when the car got warm up?
but sure i'll definitely check the them because this problem is very annoying...and btw thanks for the GREAT thread!!!
ye me 93 318i has the same problem have barely anypower i know its the coils and have ordered them but i ordered the coils themselves should i replace the bottom connector piece aswell? or will the ignition coils itself suffice