SS DNA

iTrader: (7)

At what point do we need to replace coils ?

I wanted to test them and see if they are working 100%.

Im doing a spark plug/wires change so its the perfect time.



Thanks for any help

juanioz28

bought a tool at autozone that lets u see if the coil is firing

cody161

iTrader: (18)

you can take them off and ohm them but i cant remember which pins you ohm. i'll see if i cant figure it out for ya.

Boost-box

iTrader: (13)

HEY! someone answer this question please, I need to know as well!

joecar

Use a spark tester... it looks like a spark plug with a ground clamp on the side of it... you clamp it to a suitable ground and run the plug wire to it... it has a large "gap", the spark should be able to jump the gap easily, looks big/blue/fat if it's good.

Or if you know someone with a high-resolution automotive oscilloscope (and a capacitive secondary probe and a current clamp probe), you can get him to scope your secondary kV and the primary current... the waveforms will show if the coils are working right or not.