Help!! V6 Brera misfiring and power loss - Alfa Romeo Forum
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Join Date: May 2010
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Alfa 156

Help!! V6 Brera misfiring and power loss

Hi everyone

I hope you can help me!!

I'm having an issue with my Brera

When doing long trips, after about an hour or so, the engine misfires, the power drops, and the engine starts to cough and splutter with the light flashing on

If I pull over to the side of the road, stop the car and restart it, she's fine again for a while then the problem recurs again

I took it to my mechanic and diagnostics showed 3 coil packs errors so I had all 6 replaced and the problem still persists

On short trips, everything is fine, starts first time, revs freely and powerfully, it only seems to happen after driving for at least 100km

Any ideas?!?

Thanks in advance for all of your help
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You need to get Error codes but at a guess if the diagnostics pointed at coil packs and new oes did not fix it then maybe the subloom related to them. You might have a problem in there. Also grasping at straws here but some of the SA guys have fuel issues with the fuel filter (in tank). I would check both these and earthing points in the engine bay (all four). Ideally you need MES ( Multiecuscan - Diagnostics software for Italian cars ) on a laptop and connected then keep a check on the errors when the problem occurs.
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brera , loss , misfiring , power

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