testing icm's???

[volks88]

this article http://forums.audiworld.com/a4/msgs/1594531.phtml is for 4 cyl. they say the neg - should NOT be moved from terminal 3. can anyone tell me what post it should be on for testing our icm's or a write up specific for our cars?

[S4 in_lowplaces]

Not sure, but if your testing your icm because of misfires all on the same bank just swith them up, log and see if the misifres switch banks.

[The_Jerbel]

Play with it and see which terminal gives continuity with the other terminals...

[volks88]

Play with it and see which terminal gives continuity with the other terminals...

see i thought i found it but not all terminals have a reading. dead?

[volks88]

when i swap icm's around i find this... one way it has a cyl misfire in cyl 3 and 5 with 3 being the worst. 1 and 6 have 0 misfires and cyl 2 and 4 have 1 or 0. now when i swap them cyl 3 still has misfires but not as bad. now cyl 4 and 5 have them and there are more in cyl 4 than 5. cyl 4 went from having 0 or 1 misfire to having like 9 or 10. kinda confusing but hopefully someone understands it lol

[readimag]

I had that same problem and replaced my o2's on a whim cause my car hit 90k on originals and made sure the plugs were gaped at .28, cause 3 was at .30 for some reason it stoped the misfires.

[volks88]

I had that same problem and replaced my o2's on a whim cause my car hit 90k on originals and made sure the plugs were gaped at .28, cause 3 was at .30 for some reason it stoped the misfires.

new o2's and tried every gap form .024 to .028. no difference at all.

[The_Jerbel]

Have you replaced the ICM's already?

[volks88]

Have you replaced the ICM's already?

no

[The_Jerbel]

see i thought i found it but not all terminals have a reading. dead?

Sounds like it...

[Cartells]

how do you test an ICM with a multimeter? and yes this sounds like your ICMs for sure. just had the same issue