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View Full Version : BAT eurodyne tune misfire stutter issue changed plugs..could it be ICM?



audikid66
01-19-2011, 04:04 PM
just changed plugs to ngk bkr7e as with the cold weather the bosch f6dtc seemed to be too cold of a spark it helped but didnt fix it im getting low rpm misfires and at 4900 rpm it starts to misfifre and stutter... when i wiggle the wires to the ICM the engine drops rpms and changes also my speedometer just stopped working... could both these be cause of the ICM? any info would help thanks also anyone know where to get one for a good price

colony7
01-19-2011, 04:16 PM
ICMs are common problems on AEBs. could also be your coil packs. as for your speedo, probably your speed sensor which is conveniently located in your transmission

audikid66
01-19-2011, 04:17 PM
on transmission or in trnasmission its not the sensor on the side

T0mat3
01-19-2011, 08:15 PM
Upgrade to the newer style coilpacks, I did, and it cost less then buying a new ICM.

audikid66
01-19-2011, 08:22 PM
dont u hafta rewire the car? i can get an icm for 30 bucks

T0mat3
01-19-2011, 11:09 PM
You only need to connect the wires where they were going into and out of the icm, then from there to the coil packs. I just bought a wiring loom from VW. It was 50$ plus the coils were 75$ for 4, which is less then a brand new ICM. Might as well upgrade as they give a better spark and are way less costly to buy. More common also, as pretty much all the other 1.8t use them.

audikid66
01-20-2011, 09:38 AM
true buttt the bolt down coils do fail a lot less then the others.. a forum memeber is selling me a lightly used ICM for $30 if this one blows up ill take your advice for sure.. thanks for the tip tho ill def do that next.. didnt know it was that easy

$teady$upreme
01-21-2011, 02:21 AM
I have the exact problem now, but running unitronics 440cc. It won't happen under 5k rpm, but at 5k, it stutters and misfires. Right now my CEL is on, i am suspecting that my plugs are no good (using NGK BKR6E as of now). I had went through a few ICM already, don't know if it is faulty. I used to have this cylinder 2 and random misfire, swap coils and codes don't follow, so probably not coilpacks.

Is strange that it runs perfect under 5k, only when it hits 5k, it stutters and misfires like crazy. Recently, when it misfires, it will have park brake light blinking too, any ideas? Oh, car is a bit rich too if that helps.

audikid66
01-21-2011, 09:07 AM
same her with the running rich and its perfect until 5k haha im almost positive its ICM because wen i wiggle the wires to it the car bogs down n shit

T0mat3
01-21-2011, 09:13 AM
Abs light on too? parking brake light blinking is abs failure usually. Could it be your plugs aren't gaped right? Because i'm not having any problem of the sort with my Mika tuning and 440cc injectors on my t3/t4.

$teady$upreme
01-21-2011, 04:12 PM
No abs light on, just occasion blinking park brake light when i hit 5k rpm (car stutters and misfires).


Abs light on too? parking brake light blinking is abs failure usually. Could it be your plugs aren't gaped right? Because i'm not having any problem of the sort with my Mika tuning and 440cc injectors on my t3/t4.

$teady$upreme
01-21-2011, 04:15 PM
plugs are 0.032 or 0.028, i couldn't remember. Yah i will get that changed first since it is least expensive, and time to do it anyways since cooper plugs tend to foul pretty fast. Should i still use BKR6E or BKR7E?

dmaxn
01-21-2011, 07:26 PM
plugs are 0.032 or 0.028, i couldn't remember. Yah i will get that changed first since it is least expensive, and time to do it anyways since cooper plugs tend to foul pretty fast. Should i still use BKR6E or BKR7E?
I know Unitronics recommends a NGK iridium plug gapped at .026" for the 440cc tune. Ill search my emails and post the part number.

Ok here it is the plug Unitronic recommended: NGK Iridium Spark Plug BKR8EIX - Part Number 2668 - Gap is .026".

I know alot of people also use the NGK V-Power Spark Plug BKR7E - Part Number 4644 - Gap is .028".

$teady$upreme
01-22-2011, 01:09 AM
Wow thank you for your info, i will definitely try the Iridium plugs out.


I know Unitronics recommends a NGK iridium plug gapped at .026" for the 440cc tune. Ill search my emails and post the part number.

Ok here it is the plug Unitronic recommended: NGK Iridium Spark Plug BKR8EIX - Part Number 2668 - Gap is .026".

I know alot of people also use the NGK V-Power Spark Plug BKR7E - Part Number 4644 - Gap is .028".

$teady$upreme
01-22-2011, 01:10 AM
Oh one quick question, if gap is smaller or bigger, it will affect the richness or leanness right?

dmaxn
01-22-2011, 07:12 AM
Oh one quick question, if gap is smaller or bigger, it will affect the richness or leanness right?
Here's the link that helped me better understand: http://www.ngksparkplugs.com/techinfo/spark_plugs/installation.asp