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      12-04-2021, 07:40 PM   #1
daap1193
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Help with a rough idle

Need some help from the forum members, my M2C with 40,000 kms developed a rough idle some time ago and I'm trying everything to solve it with no luck.
After I stop it takes like 30 seconds to start shaking, it's very slightly to catch on camera but really annoying, I can describe it as a hip cup that feels on the driver seat and repeats every 3-4 sec.

If somebody has experience the same and know what causes will appreciate the help.

What I have tried so far
Check for leaks on the intake system
Clean the maf and tmap
Check all the charge pipes and J pipe for leaks
Replace all the spark plugs and gapped to 0.022
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      12-04-2021, 08:43 PM   #2
M5D
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Coils! You could isolate the bad coil or coils or change them all!
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      12-05-2021, 12:11 PM   #3
EurAutosF80
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Without any data or codes your best luck is to do coils.
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      12-07-2021, 06:47 AM   #4
N44RP
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I have the same issue but it’s pretty slight.
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      12-07-2021, 09:42 PM   #5
daap1193
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Quote:
Originally Posted by N44RP View Post
I have the same issue but it’s pretty slight.
I diagnosed some misfires on random cilindres, change plugs and it improve significantly now the idle is smother, I will change coils because I keep having misfire at partial throttle. You know if you have misfire with ista even if they are at idle and doesn't throw any code . Just Learn that from other forum member.
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      12-09-2021, 02:35 AM   #6
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Do you have intermittent issues switching engine modes as well? Efficient -> Sport -> Sport+?
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